本指南提供了有关如何从 Landsat Collection 1 改用 Collection 2 数据的说明。自 2022 年以来,Earth Engine 中已全面提供 Collection 2 数据,并且 USGS 自 2021 年 12 月 31 日以来未再生成任何 Collection 1 数据。 Landsat Collection 1 已弃用,建议所有用户尽快迁移到 Collection 2。
每个 Landsat Collection 都表示使用一致的方法和例程处理的影像归档版本。随着系统和处理算法的改进,系统会生成新的合集。2020 年,USGS 开始将归档重新处理为 Collection 2。如需了解集合处理模型背后的基本原理以及 Collection 2 提供的相关内容和改进,请参阅《Remote Sensing of Environment》杂志上发表的“The 50-year Landsat collection 2 archive”一文。
以下各部分介绍了从 Collection 1 迁移到 Collection 2 时,针对每个 Landsat 数据产品需要做出的更改,包括影像和集合 ID、波段名称、新波段、波段值缩放和位掩码值。每个部分中的内容标签页都提供了特定传感器的详细信息。
表面反射率
OLI
资产 ID
将图片和集合 ID 中的 C01
替换为 C02
,并将 SR
替换为 L2
。
例如,Landsat 8 OLI Tier 1(Landsat 9 OLI-2 未包含在集合 1 中):
Collection 1 | Collection 2 |
---|---|
LANDSAT/LC08/C01/T1_SR | LANDSAT/LC08/C02/T1_L2 |
频段名称
展开可查看乐队名称变更和新乐队的添加
说明 | 集合 1 名称 | 集合 2 名称 |
---|---|---|
极致蓝 | B1 | SR_B1 |
蓝色 | B2 | SR_B2 |
绿色 | B3 | SR_B3 |
红色 | B4 | SR_B4 |
近红外 | B5 | SR_B5 |
短波红外 1 | B6 | SR_B6 |
短波红外 2 | B7 | SR_B7 |
亮度温度 1 | B10 | |
亮度温度 2 | B11 | |
气溶胶属性 | sr_aerosol | SR_QA_AEROSOL |
表面温度 | ST_B10 | |
大气透射率 | ST_ATRAN | |
像素与云端的距离 | ST_CDIST | |
下行辐射 | ST_DRAD | |
发射率 | ST_EMIS | |
发射率标准差 | ST_EMSD | |
地表温度不确定性 | ST_QA | |
热辐射 | ST_TRAD | |
上涌辐射 | ST_URAD | |
像素质量属性 (CFMask) | pixel_qa | QA_PIXEL |
辐射饱和度质量检查 | radsat_qa | QA_RADSAT |
更新用于选择名称已更改的波段(例如近红外波段)的代码:
Collection 1 | Collection 2 |
---|---|
image.select('B5') |
image.select('SR_B5') |
价值缩放
反射率波段具有新的缩放比例。集合 1 使用了 0.0001
缩放比例。集合 2 使用 2.75e-05
缩放比例和 -0.2
偏移量。热红外波段还具有新的比例和偏移量。以下代码块定义了一个函数,用于应用 Collection 2 地表反射率和温度波段缩放比例因子,并将其映射到影像集合。
代码编辑器 (JavaScript)
var applyScaleFactors = function(image) { var opticalBands = image.select('SR_B.').multiply(0.0000275).add(-0.2); var thermalBand = image.select('ST_B10').multiply(0.00341802).add(149.0); return image.addBands(opticalBands, null, true) .addBands(thermalBand, null, true); } var srColScaled = srCol.map(applyScaleFactors)
Colab (Python)
def apply_scale_factors(image): optical_bands = image.select('SR_B.').multiply(0.0000275).add(-0.2) thermal_band = image.select('ST_B6').multiply(0.00341802).add(149.0) return image.addBands(optical_bands, None, True).addBands( thermal_band, None, True ) sr_col_scaled = sr_col.map(apply_scale_factors)
QA 掩盖
QA 位掩码 (CFMASK) 的位代码已更改。 如需了解相关代码,请参阅目录条目中的“QA_PIXEL 的位掩码”(集合 2)和“pixel_qa 的位掩码”(集合 1)部分。
以下表达式使用 Collection 2 QA 位掩码代码为指定图片创建云和阴影掩码。
代码编辑器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11111', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11111', 2)).eq(0)
辐射饱和度
放射性饱和度位掩码的位代码已更改。 如需了解代码,请参阅目录条目中的“QA_RADSAT 的位掩码”(Collection 2)和“radsat_qa 的位掩码”(Collection 1)部分。
图片属性
在从集合 1 过渡到集合 2 的过程中,添加了一些图片属性,并移除了一些图片属性。更改了太阳几何属性。请参阅以下属性比较表,以确定是否需要修改代码来适应缺失、添加或更改的属性(例如,在过滤或处理过程中)。如需查看集合 2 属性说明,请参阅商品目录页面中的“图片属性”标签页。
展开即可比较房源列表
Collection 1 | Collection 2 |
---|---|
ALGORITHM_SOURCE_SURFACE_REFLECTANCE | |
ALGORITHM_SOURCE_SURFACE_TEMPERATURE | |
CLOUD_COVER | CLOUD_COVER |
CLOUD_COVER_LAND | CLOUD_COVER_LAND |
COLLECTION_CATEGORY | |
COLLECTION_NUMBER | |
DATA_SOURCE_AIR_TEMPERATURE | |
DATA_SOURCE_ELEVATION | |
DATA_SOURCE_OZONE | |
DATA_SOURCE_PRESSURE | |
DATA_SOURCE_REANALYSIS | |
DATA_SOURCE_TIRS_STRAY_LIGHT_CORRECTION | |
DATA_SOURCE_WATER_VAPOR | |
DATE_ACQUIRED | |
DATE_PRODUCT_GENERATED | |
DATUM | |
EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
ELLIPSOID | |
ESPA_VERSION | |
GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
GEOMETRIC_RMSE_VERIFY | |
GRID_CELL_SIZE_REFLECTIVE | |
GRID_CELL_SIZE_THERMAL | |
GROUND_CONTROL_POINTS_MODEL | |
GROUND_CONTROL_POINTS_VERIFY | |
GROUND_CONTROL_POINTS_VERSION | |
IMAGE_QUALITY_OLI | IMAGE_QUALITY_OLI |
IMAGE_QUALITY_TIRS | IMAGE_QUALITY_TIRS |
L1_DATE_PRODUCT_GENERATED | |
L1_LANDSAT_PRODUCT_ID | |
L1_PROCESSING_LEVEL | |
L1_PROCESSING_SOFTWARE_VERSION | |
L1_REQUEST_ID | |
LANDSAT_ID | |
LANDSAT_PRODUCT_ID | |
LANDSAT_SCENE_ID | |
LEVEL1_PRODUCTION_DATE | |
MAP_PROJECTION | |
NADIR_OFFNADIR | |
方向 | |
PIXEL_QA_VERSION | |
PROCESSING_LEVEL | |
PROCESSING_SOFTWARE_VERSION | |
REFLECTANCE_ADD_BAND_1 | |
REFLECTANCE_ADD_BAND_2 | |
REFLECTANCE_ADD_BAND_3 | |
REFLECTANCE_ADD_BAND_4 | |
REFLECTANCE_ADD_BAND_5 | |
REFLECTANCE_ADD_BAND_6 | |
REFLECTANCE_ADD_BAND_7 | |
REFLECTANCE_MULT_BAND_1 | |
REFLECTANCE_MULT_BAND_2 | |
REFLECTANCE_MULT_BAND_3 | |
REFLECTANCE_MULT_BAND_4 | |
REFLECTANCE_MULT_BAND_5 | |
REFLECTANCE_MULT_BAND_6 | |
REFLECTANCE_MULT_BAND_7 | |
REFLECTIVE_LINES | |
REFLECTIVE_SAMPLES | |
REQUEST_ID | |
ROLL_ANGLE | |
卫星 | |
SATURATION_BAND_1 | |
SATURATION_BAND_2 | |
SATURATION_BAND_3 | |
SATURATION_BAND_4 | |
SATURATION_BAND_5 | |
SATURATION_BAND_6 | |
SATURATION_BAND_7 | |
SATURATION_BAND_8 | |
SATURATION_BAND_9 | |
SCENE_CENTER_TIME | |
SENSING_TIME | |
SENSOR_ID | |
SPACECRAFT_ID | |
STATION_ID | |
SOLAR_AZIMUTH_ANGLE | SUN_AZIMUTH |
SOLAR_ZENITH_ANGLE | SUN_ELEVATION (Collection 2 使用的是高度,而不是天顶角。如需计算天顶角,请使用 90 - elevation 。) |
SR_APP_VERSION | |
TARGET_WRS_PATH | |
TARGET_WRS_ROW | |
TEMPERATURE_ADD_BAND_ST_B10 | |
TEMPERATURE_MAXIMUM_BAND_ST_B10 | |
TEMPERATURE_MINIMUM_BAND_ST_B10 | |
TEMPERATURE_MULT_BAND_ST_B10 | |
THERMAL_LINES | |
THERMAL_SAMPLES | |
TIRS_SSM_MODEL | |
TIRS_SSM_POSITION_STATUS | |
TRUNCATION_OLI | |
UTM_ZONE | |
WRS_PATH | WRS_PATH |
WRS_ROW | WRS_ROW |
WRS_TYPE |
ETM+
资产 ID
将图片和集合 ID 中的 C01
替换为 C02
,并将 SR
替换为 L2
。
例如,Landsat 7 ETM+ Tier 1:
Collection 1 | Collection 2 |
---|---|
LANDSAT/LE07/C01/T1_SR | LANDSAT/LE07/C02/T1_L2 |
频段名称
请注意频段名称的更改以及新频段的添加。
展开可查看乐队名称变更和新乐队的添加
说明 | 集合 1 名称 | 集合 2 名称 |
---|---|---|
蓝色 | B1 | SR_B1 |
绿色 | B2 | SR_B2 |
红色 | B3 | SR_B3 |
近红外 | B4 | SR_B4 |
短波红外 1 | B5 | SR_B5 |
大气层顶亮度温度 | B6 | |
短波红外 2 | B7 | SR_B7 |
大气不透明度 | sr_atmos_opacity | SR_ATMOS_OPACITY |
云质量评估 | sr_cloud_qa | SR_CLOUD_QA |
表面温度 | ST_B6 | |
大气透射率 | ST_ATRAN | |
像素与云端的距离 | ST_CDIST | |
下行辐射 | ST_DRAD | |
发射率 | ST_EMIS | |
发射率标准差 | ST_EMSD | |
地表温度不确定性 | ST_QA | |
热辐射 | ST_TRAD | |
上涌辐射 | ST_URAD | |
像素质量属性 (CFMask) | pixel_qa | QA_PIXEL |
辐射饱和度质量检查 | radsat_qa | QA_RADSAT |
更新用于选择名称已更改的波段(例如近红外波段)的代码:
Collection 1 | Collection 2 |
---|---|
image.select('B4') |
image.select('SR_B4') |
价值缩放
反射率波段具有新的缩放比例。集合 1 使用了 0.0001
缩放比例。集合 2 使用 2.75e-05
缩放比例和 -0.2
偏移量。热红外波段还具有新的比例和偏移量。以下代码块定义了一个函数,用于应用 Collection 2 地表反射率和温度波段缩放比例因子,并将其映射到影像集合。
代码编辑器 (JavaScript)
var applyScaleFactors = function(image) { var opticalBands = image.select('SR_B.').multiply(0.0000275).add(-0.2); var thermalBand = image.select('ST_B6').multiply(0.00341802).add(149.0); return image.addBands(opticalBands, null, true) .addBands(thermalBand, null, true); } var srColScaled = srCol.map(applyScaleFactors)
Colab (Python)
def apply_scale_factors(image): optical_bands = image.select('SR_B.').multiply(0.0000275).add(-0.2) thermal_band = image.select('ST_B6').multiply(0.00341802).add(149.0) return image.addBands(optical_bands, None, True).addBands( thermal_band, None, True ) sr_col_scaled = sr_col.map(apply_scale_factors)
QA 掩盖
QA 位掩码 (CFMASK) 的位代码已更改。 如需了解相关代码,请参阅目录条目中的“QA_PIXEL 的位掩码”(集合 2)和“pixel_qa 的位掩码”(集合 1)部分。
以下表达式使用 Collection 2 QA 位掩码代码为指定图片创建云和阴影掩码。
代码编辑器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11111', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11111', 2)).eq(0)
辐射饱和度
放射性饱和度位掩码的位代码已更改。 如需了解代码,请参阅目录条目中的“QA_RADSAT 的位掩码”(Collection 2)和“radsat_qa 的位掩码”(Collection 1)部分。
图片属性
在从集合 1 过渡到集合 2 的过程中,添加了一些图片属性,并移除了一些图片属性。更改了太阳几何属性。请参阅以下属性比较表,以确定是否需要修改代码来适应缺失、添加或更改的属性(例如,在过滤或处理过程中)。如需查看集合 2 属性说明,请参阅商品目录页面中的“图片属性”标签页。
展开即可比较房源列表
Collection 1 | Collection 2 |
---|---|
ALGORITHM_SOURCE_SURFACE_REFLECTANCE | |
ALGORITHM_SOURCE_SURFACE_TEMPERATURE | |
CLOUD_COVER | CLOUD_COVER |
CLOUD_COVER_LAND | CLOUD_COVER_LAND |
COLLECTION_CATEGORY | |
COLLECTION_NUMBER | |
CORRECTION_BIAS_BAND_1 | |
CORRECTION_BIAS_BAND_2 | |
CORRECTION_BIAS_BAND_3 | |
CORRECTION_BIAS_BAND_4 | |
CORRECTION_BIAS_BAND_5 | |
CORRECTION_BIAS_BAND_6_VCID_1 | |
CORRECTION_BIAS_BAND_6_VCID_2 | |
CORRECTION_BIAS_BAND_7 | |
CORRECTION_BIAS_BAND_8 | |
CORRECTION_GAIN_BAND_1 | |
CORRECTION_GAIN_BAND_2 | |
CORRECTION_GAIN_BAND_3 | |
CORRECTION_GAIN_BAND_4 | |
CORRECTION_GAIN_BAND_5 | |
CORRECTION_GAIN_BAND_6_VCID_1 | |
CORRECTION_GAIN_BAND_6_VCID_2 | |
CORRECTION_GAIN_BAND_7 | |
CORRECTION_GAIN_BAND_8 | |
DATA_SOURCE_AIR_TEMPERATURE | |
DATA_SOURCE_ELEVATION | |
DATA_SOURCE_OZONE | |
DATA_SOURCE_PRESSURE | |
DATA_SOURCE_REANALYSIS | |
DATA_SOURCE_WATER_VAPOR | |
DATE_ACQUIRED | |
DATE_PRODUCT_GENERATED | |
DATUM | |
EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
ELLIPSOID | |
EPHEMERIS_TYPE | |
ESPA_VERSION | |
GAIN_BAND_1 | |
GAIN_BAND_2 | |
GAIN_BAND_3 | |
GAIN_BAND_4 | |
GAIN_BAND_5 | |
GAIN_BAND_6_VCID_1 | |
GAIN_BAND_6_VCID_2 | |
GAIN_BAND_7 | |
GAIN_BAND_8 | |
GAIN_CHANGE_BAND_1 | |
GAIN_CHANGE_BAND_2 | |
GAIN_CHANGE_BAND_3 | |
GAIN_CHANGE_BAND_4 | |
GAIN_CHANGE_BAND_5 | |
GAIN_CHANGE_BAND_6_VCID_1 | |
GAIN_CHANGE_BAND_6_VCID_2 | |
GAIN_CHANGE_BAND_7 | |
GAIN_CHANGE_BAND_8 | |
GAIN_CHANGE_SCAN_BAND_1 | |
GAIN_CHANGE_SCAN_BAND_2 | |
GAIN_CHANGE_SCAN_BAND_3 | |
GAIN_CHANGE_SCAN_BAND_4 | |
GAIN_CHANGE_SCAN_BAND_5 | |
GAIN_CHANGE_SCAN_BAND_6_VCID_1 | |
GAIN_CHANGE_SCAN_BAND_6_VCID_2 | |
GAIN_CHANGE_SCAN_BAND_7 | |
GAIN_CHANGE_SCAN_BAND_8 | |
GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
GRID_CELL_SIZE_REFLECTIVE | |
GRID_CELL_SIZE_THERMAL | |
GROUND_CONTROL_POINTS_MODEL | |
GROUND_CONTROL_POINTS_VERSION | |
IMAGE_QUALITY | IMAGE_QUALITY |
L1_DATE_PRODUCT_GENERATED | |
L1_LANDSAT_PRODUCT_ID | |
L1_PROCESSING_LEVEL | |
L1_PROCESSING_SOFTWARE_VERSION | |
L1_REQUEST_ID | |
LANDSAT_ID | |
LANDSAT_PRODUCT_ID | |
LANDSAT_SCENE_ID | |
LEVEL1_PRODUCTION_DATE | |
MAP_PROJECTION | |
方向 | |
PIXEL_QA_VERSION | |
PROCESSING_LEVEL | |
PROCESSING_SOFTWARE_VERSION | |
REFLECTANCE_ADD_BAND_1 | |
REFLECTANCE_ADD_BAND_2 | |
REFLECTANCE_ADD_BAND_3 | |
REFLECTANCE_ADD_BAND_4 | |
REFLECTANCE_ADD_BAND_5 | |
REFLECTANCE_ADD_BAND_7 | |
REFLECTANCE_MULT_BAND_1 | |
REFLECTANCE_MULT_BAND_2 | |
REFLECTANCE_MULT_BAND_3 | |
REFLECTANCE_MULT_BAND_4 | |
REFLECTANCE_MULT_BAND_5 | |
REFLECTANCE_MULT_BAND_7 | |
REFLECTIVE_LINES | |
REFLECTIVE_SAMPLES | |
REQUEST_ID | |
卫星 | |
SATURATION_BAND_1 | |
SATURATION_BAND_2 | |
SATURATION_BAND_3 | |
SATURATION_BAND_4 | |
SATURATION_BAND_5 | |
SATURATION_BAND_6_VCID_1 | |
SATURATION_BAND_6_VCID_2 | |
SATURATION_BAND_7 | |
SATURATION_BAND_8 | |
SCENE_CENTER_TIME | |
SENSING_TIME | |
SENSOR_ANOMALIES | |
SENSOR_ID | |
SENSOR_MODE | |
SENSOR_MODE_SLC | |
SPACECRAFT_ID | |
STATION_ID | |
SOLAR_AZIMUTH_ANGLE | SUN_AZIMUTH |
SOLAR_ZENITH_ANGLE | SUN_ELEVATION (Collection 2 使用的是高度,而不是天顶角。如需计算天顶角,请使用 90 - elevation 。) |
SR_APP_VERSION | |
TEMPERATURE_ADD_BAND_ST_B6 | |
TEMPERATURE_MAXIMUM_BAND_ST_B6 | |
TEMPERATURE_MINIMUM_BAND_ST_B6 | |
TEMPERATURE_MULT_BAND_ST_B6 | |
THERMAL_LINES | |
THERMAL_SAMPLES | |
UTM_ZONE | |
WRS_PATH | WRS_PATH |
WRS_ROW | WRS_ROW |
WRS_TYPE |
TM
资产 ID
将图片和集合 ID 中的 C01
替换为 C02
,并将 SR
替换为 L2
。
例如,Landsat 5 TM Tier 1:
Collection 1 | Collection 2 |
---|---|
LANDSAT/LT05/C01/T1_SR | LANDSAT/LT05/C02/T1_L2 |
频段名称
请注意频段名称的更改以及新频段的添加。
展开可查看乐队名称变更和新乐队的添加
说明 | 集合 1 名称 | 集合 2 名称 |
---|---|---|
蓝色 | B1 | SR_B1 |
绿色 | B2 | SR_B2 |
红色 | B3 | SR_B3 |
近红外 | B4 | SR_B4 |
短波红外 1 | B5 | SR_B5 |
大气层顶亮度温度 | B6 | |
短波红外 2 | B7 | SR_B7 |
大气不透明度 | sr_atmos_opacity | SR_ATMOS_OPACITY |
云质量评估 | sr_cloud_qa | SR_CLOUD_QA |
表面温度 | ST_B6 | |
大气透射率 | ST_ATRAN | |
像素与云端的距离 | ST_CDIST | |
下行辐射 | ST_DRAD | |
发射率 | ST_EMIS | |
发射率标准差 | ST_EMSD | |
地表温度不确定性 | ST_QA | |
热辐射 | ST_TRAD | |
上涌辐射 | ST_URAD | |
像素质量属性 (CFMask) | pixel_qa | QA_PIXEL |
辐射饱和度质量检查 | radsat_qa | QA_RADSAT |
更新用于选择名称已更改的波段(例如近红外波段)的代码:
Collection 1 | Collection 2 |
---|---|
image.select('B4') |
image.select('SR_B4') |
价值缩放
反射率波段具有新的缩放比例。集合 1 使用了 0.0001
缩放比例。集合 2 使用 2.75e-05
缩放比例和 -0.2
偏移量。热红外波段还具有新的比例和偏移量。以下代码块定义了一个函数,用于应用 Collection 2 地表反射率和温度波段缩放比例因子,并将其映射到影像集合。
代码编辑器 (JavaScript)
var applyScaleFactors = function(image) { var opticalBands = image.select('SR_B.').multiply(0.0000275).add(-0.2); var thermalBand = image.select('ST_B6').multiply(0.00341802).add(149.0); return image.addBands(opticalBands, null, true) .addBands(thermalBand, null, true); } var srColScaled = srCol.map(applyScaleFactors)
Colab (Python)
def apply_scale_factors(image): optical_bands = image.select('SR_B.').multiply(0.0000275).add(-0.2) thermal_band = image.select('ST_B6').multiply(0.00341802).add(149.0) return image.addBands(optical_bands, None, True).addBands( thermal_band, None, True ) sr_col_scaled = sr_col.map(apply_scale_factors)
QA 掩盖
QA 位掩码 (CFMASK) 的位代码已更改。 如需了解代码(例如 TM 5)的位掩码,请参阅目录条目中的“QA_PIXEL 的位掩码”(集合 2)和“pixel_qa 的位掩码”(集合 1)部分。
以下表达式使用 Collection 2 QA 位掩码代码为指定图片创建云和阴影掩码。
代码编辑器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11111', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11111', 2)).eq(0)
辐射饱和度
放射性饱和度位掩码的位代码已更改。 如需查看代码(例如 TM 5),请参阅目录条目中的“Bitmask for QA_RADSAT”(Collection 2)和“Bitmask for radsat_qa”(Collection 1)部分。
图片属性
在从集合 1 过渡到集合 2 的过程中,添加了一些图片属性,并移除了一些图片属性。更改了太阳几何属性。请参阅以下属性比较表,以确定是否需要修改代码来适应缺失、添加或更改的属性(例如,在过滤或处理过程中)。如需了解集合 2 属性说明(例如 TM 5),请参阅商品目录页面中的“图片属性”标签页。
展开即可比较房源列表
Collection 1 | Collection 2 |
---|---|
ALGORITHM_SOURCE_SURFACE_REFLECTANCE | |
ALGORITHM_SOURCE_SURFACE_TEMPERATURE | |
CLOUD_COVER | CLOUD_COVER |
CLOUD_COVER_LAND | CLOUD_COVER_LAND |
COLLECTION_CATEGORY | |
COLLECTION_NUMBER | |
CORRECTION_BIAS_BAND_1 | |
CORRECTION_BIAS_BAND_2 | |
CORRECTION_BIAS_BAND_3 | |
CORRECTION_BIAS_BAND_4 | |
CORRECTION_BIAS_BAND_5 | |
CORRECTION_BIAS_BAND_6 | |
CORRECTION_BIAS_BAND_7 | |
CORRECTION_GAIN_BAND_1 | |
CORRECTION_GAIN_BAND_2 | |
CORRECTION_GAIN_BAND_3 | |
CORRECTION_GAIN_BAND_4 | |
CORRECTION_GAIN_BAND_5 | |
CORRECTION_GAIN_BAND_6 | |
CORRECTION_GAIN_BAND_7 | |
DATA_SOURCE_AIR_TEMPERATURE | |
DATA_SOURCE_ELEVATION | |
DATA_SOURCE_OZONE | |
DATA_SOURCE_PRESSURE | |
DATA_SOURCE_REANALYSIS | |
DATA_SOURCE_WATER_VAPOR | |
DATA_TYPE_L0RP | |
DATE_ACQUIRED | |
DATE_PRODUCT_GENERATED | |
DATUM | |
EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
ELLIPSOID | |
EPHEMERIS_TYPE | |
ESPA_VERSION | |
GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
GEOMETRIC_RMSE_VERIFY | |
GEOMETRIC_RMSE_VERIFY_QUAD_LL | |
GEOMETRIC_RMSE_VERIFY_QUAD_LR | |
GEOMETRIC_RMSE_VERIFY_QUAD_UL | |
GEOMETRIC_RMSE_VERIFY_QUAD_UR | |
GRID_CELL_SIZE_REFLECTIVE | |
GRID_CELL_SIZE_THERMAL | |
GROUND_CONTROL_POINTS_MODEL | |
GROUND_CONTROL_POINTS_VERIFY | |
GROUND_CONTROL_POINTS_VERSION | |
IMAGE_QUALITY | IMAGE_QUALITY |
L1_DATE_PRODUCT_GENERATED | |
L1_LANDSAT_PRODUCT_ID | |
L1_PROCESSING_LEVEL | |
L1_PROCESSING_SOFTWARE_VERSION | |
L1_REQUEST_ID | |
LANDSAT_ID | |
LANDSAT_PRODUCT_ID | |
LANDSAT_SCENE_ID | |
LEVEL1_PRODUCTION_DATE | |
MAP_PROJECTION | |
方向 | |
PIXEL_QA_VERSION | |
PROCESSING_LEVEL | |
PROCESSING_SOFTWARE_VERSION | |
REFLECTANCE_ADD_BAND_1 | |
REFLECTANCE_ADD_BAND_2 | |
REFLECTANCE_ADD_BAND_3 | |
REFLECTANCE_ADD_BAND_4 | |
REFLECTANCE_ADD_BAND_5 | |
REFLECTANCE_ADD_BAND_7 | |
REFLECTANCE_MULT_BAND_1 | |
REFLECTANCE_MULT_BAND_2 | |
REFLECTANCE_MULT_BAND_3 | |
REFLECTANCE_MULT_BAND_4 | |
REFLECTANCE_MULT_BAND_5 | |
REFLECTANCE_MULT_BAND_7 | |
REFLECTIVE_LINES | |
REFLECTIVE_SAMPLES | |
REQUEST_ID | |
卫星 | |
SATURATION_BAND_1 | |
SATURATION_BAND_2 | |
SATURATION_BAND_3 | |
SATURATION_BAND_4 | |
SATURATION_BAND_5 | |
SATURATION_BAND_6 | |
SATURATION_BAND_7 | |
SCENE_CENTER_TIME | |
SENSING_TIME | |
SENSOR_ANOMALIES | |
SENSOR_ID | |
SENSOR_MODE | |
SENSOR_MODE_SLC | |
SPACECRAFT_ID | |
STATION_ID | |
SOLAR_AZIMUTH_ANGLE | SUN_AZIMUTH |
SOLAR_ZENITH_ANGLE | SUN_ELEVATION (Collection 2 使用的是高度,而不是天顶角。如需计算天顶角,请使用 90 - elevation 。) |
SR_APP_VERSION | |
TEMPERATURE_ADD_BAND_ST_B6 | |
TEMPERATURE_MAXIMUM_BAND_ST_B6 | |
TEMPERATURE_MINIMUM_BAND_ST_B6 | |
TEMPERATURE_MULT_BAND_ST_B6 | |
THERMAL_LINES | |
THERMAL_SAMPLES | |
UTM_ZONE | |
WRS_PATH | WRS_PATH |
WRS_ROW | WRS_ROW |
WRS_TYPE |
大气层顶部反射率
OLI
资产 ID
将图片和集合 ID 中的 C01
替换为 C02
。例如,Landsat 8 OLI Tier 1(Landsat 9 OLI-2 未包含在集合 1 中):
Collection 1 | Collection 2 |
---|---|
LANDSAT/LC08/C01/T1_TOA | LANDSAT/LC08/C02/T1_TOA |
频段名称
请注意频段名称的更改以及新频段的添加。
展开可查看乐队名称变更和新乐队的添加
说明 | 集合 1 名称 | 集合 2 名称 |
---|---|---|
沿海气溶胶 | B1 | B1 |
蓝色 | B2 | B2 |
绿色 | B3 | B3 |
红色 | B4 | B4 |
近红外 | B5 | B5 |
短波红外 1 | B6 | B6 |
短波红外 2 | B7 | B7 |
Panchromatic | B8 | B8 |
Cirrus | B9 | B9 |
热红外 1 | B10 | B10 |
红外热成像 2 | B11 | B11 |
QA 位掩码 | BQA | QA_PIXEL |
辐射饱和度质量检查 | QA_RADSAT | |
太阳方位角 | SAA | |
太阳天顶角 | SZA | |
查看方位角 | VAA | |
查看天顶角 | VZA |
更新用于选择名称已更改的频段的代码,例如 QA 位掩码频段:
Collection 1 | Collection 2 |
---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
价值缩放
无需进行任何变更。集合 1 和集合 2 的大气层顶部反射率和热值具有相同的缩放比例。
QA 掩盖
QA 位掩码的位代码已更改。 请参阅目录条目中有关代码的“QA_PIXEL 的位掩码”(集合 2)和“BQA 的位掩码”(集合 1)部分。
以下表达式使用 Collection 2 QA 位掩码代码为指定图片创建云和阴影掩码。
代码编辑器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
图片属性
在从集合 1 过渡到集合 2 的过程中,添加了一些图片属性,并移除了一些图片属性。未更改任何房源名称。请参阅以下属性比较表,确定您是否需要修改代码以适应缺失或添加的属性(例如在过滤或处理过程中)。如需查看集合 2 属性说明,请参阅商品目录页面中的“图片属性”标签页。
展开即可比较房源列表
Collection 1 | Collection 2 |
---|---|
BPF_NAME_OLI | |
BPF_NAME_TIRS | |
CLOUD_COVER | CLOUD_COVER |
CLOUD_COVER_LAND | CLOUD_COVER_LAND |
COLLECTION_CATEGORY | COLLECTION_CATEGORY |
COLLECTION_NUMBER | COLLECTION_NUMBER |
CPF_NAME | |
DATA_SOURCE_ELEVATION | |
DATA_SOURCE_TIRS_STRAY_LIGHT_CORRECTION | |
DATA_TYPE | |
DATE_ACQUIRED | DATE_ACQUIRED |
DATE_PRODUCT_GENERATED | |
DATUM | DATUM |
EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
ELEVATION_SOURCE | |
ELLIPSOID | ELLIPSOID |
FILE_DATE | |
GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
GRID_CELL_SIZE_PANCHROMATIC | GRID_CELL_SIZE_PANCHROMATIC |
GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
IMAGE_QUALITY_OLI | IMAGE_QUALITY_OLI |
IMAGE_QUALITY_TIRS | IMAGE_QUALITY_TIRS |
K1_CONSTANT_BAND_10 | K1_CONSTANT_BAND_10 |
K1_CONSTANT_BAND_11 | K1_CONSTANT_BAND_11 |
K2_CONSTANT_BAND_10 | K2_CONSTANT_BAND_10 |
K2_CONSTANT_BAND_11 | K2_CONSTANT_BAND_11 |
LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
MAP_PROJECTION | MAP_PROJECTION |
NADIR_OFFNADIR | NADIR_OFFNADIR |
方向 | 方向 |
PANCHROMATIC_LINES | PANCHROMATIC_LINES |
PANCHROMATIC_SAMPLES | PANCHROMATIC_SAMPLES |
PROCESSING_LEVEL | |
PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
RADIANCE_ADD_BAND_10 | RADIANCE_ADD_BAND_10 |
RADIANCE_ADD_BAND_11 | RADIANCE_ADD_BAND_11 |
RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
RADIANCE_ADD_BAND_8 | RADIANCE_ADD_BAND_8 |
RADIANCE_ADD_BAND_9 | RADIANCE_ADD_BAND_9 |
RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
RADIANCE_MULT_BAND_10 | RADIANCE_MULT_BAND_10 |
RADIANCE_MULT_BAND_11 | RADIANCE_MULT_BAND_11 |
RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
RADIANCE_MULT_BAND_8 | RADIANCE_MULT_BAND_8 |
RADIANCE_MULT_BAND_9 | RADIANCE_MULT_BAND_9 |
REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
REFLECTANCE_ADD_BAND_6 | REFLECTANCE_ADD_BAND_6 |
REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
REFLECTANCE_ADD_BAND_8 | REFLECTANCE_ADD_BAND_8 |
REFLECTANCE_ADD_BAND_9 | REFLECTANCE_ADD_BAND_9 |
REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
REFLECTANCE_MULT_BAND_6 | REFLECTANCE_MULT_BAND_6 |
REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
REFLECTANCE_MULT_BAND_8 | REFLECTANCE_MULT_BAND_8 |
REFLECTANCE_MULT_BAND_9 | REFLECTANCE_MULT_BAND_9 |
REFLECTIVE_LINES | REFLECTIVE_LINES |
REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
REQUEST_ID | REQUEST_ID |
RESAMPLING_OPTION | RESAMPLING_OPTION |
RLUT_FILE_NAME | |
ROLL_ANGLE | ROLL_ANGLE |
SATURATION_BAND_1 | SATURATION_BAND_1 |
SATURATION_BAND_2 | SATURATION_BAND_2 |
SATURATION_BAND_3 | SATURATION_BAND_3 |
SATURATION_BAND_4 | SATURATION_BAND_4 |
SATURATION_BAND_5 | SATURATION_BAND_5 |
SATURATION_BAND_6 | SATURATION_BAND_6 |
SATURATION_BAND_7 | SATURATION_BAND_7 |
SATURATION_BAND_8 | SATURATION_BAND_8 |
SATURATION_BAND_9 | SATURATION_BAND_9 |
SCENE_CENTER_TIME | SCENE_CENTER_TIME |
SENSOR_ID | SENSOR_ID |
SPACECRAFT_ID | SPACECRAFT_ID |
STATION_ID | STATION_ID |
SUN_AZIMUTH | SUN_AZIMUTH |
SUN_ELEVATION | SUN_ELEVATION |
TARGET_WRS_PATH | TARGET_WRS_PATH |
TARGET_WRS_ROW | TARGET_WRS_ROW |
THERMAL_LINES | THERMAL_LINES |
THERMAL_SAMPLES | THERMAL_SAMPLES |
TIRS_SSM_MODEL | TIRS_SSM_MODEL |
TIRS_SSM_POSITION_STATUS | TIRS_SSM_POSITION_STATUS |
TIRS_STRAY_LIGHT_CORRECTION_SOURCE | |
TRUNCATION_OLI | TRUNCATION_OLI |
UTM_ZONE | UTM_ZONE |
WRS_PATH | WRS_PATH |
WRS_ROW | WRS_ROW |
WRS_TYPE | |
google:registration_count | |
google:registration_offset_x | |
google:registration_offset_y | |
google:registration_ratio |
ETM+
资产 ID
将图片和集合 ID 中的 C01
替换为 C02
。例如,Landsat 7 ETM+ Tier 1:
Collection 1 | Collection 2 |
---|---|
LANDSAT/LE07/C01/T1_TOA | LANDSAT/LE07/C02/T1_TOA |
频段名称
请注意频段名称的更改以及新频段的添加。
展开可查看乐队名称变更和新乐队的添加
说明 | 集合 1 名称 | 集合 2 名称 |
---|---|---|
蓝色 | B1 | B1 |
绿色 | B2 | B2 |
红色 | B3 | B3 |
近红外 | B4 | B4 |
短波红外 1 | B5 | B5 |
低增益热红外 1 | B6_VCID_1 | B6_VCID_1 |
高增益热红外 1 | B6_VCID_2 | B6_VCID_2 |
短波红外 2 | B7 | B7 |
Panchromatic | B8 | B8 |
QA 位掩码 | BQA | QA_PIXEL |
辐射饱和度质量检查 | QA_RADSAT | |
太阳方位角 | SAA | |
太阳天顶角 | SZA | |
查看方位角 | VAA | |
查看天顶角 | VZA |
更新用于选择名称已更改的频段的代码,例如 QA 位掩码频段:
Collection 1 | Collection 2 |
---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
价值缩放
无需进行任何变更。集合 1 和集合 2 的大气层顶部反射率和热值具有相同的缩放比例。
QA 掩盖
QA 位掩码的位代码已更改。 请参阅目录条目中有关代码的“QA_PIXEL 的位掩码”(集合 2)和“BQA 的位掩码”(集合 1)部分。
以下表达式使用 Collection 2 QA 位掩码代码为指定图片创建云和阴影掩码。
代码编辑器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
图片属性
在从集合 1 过渡到集合 2 的过程中,添加了一些图片属性,并移除了一些图片属性。未更改任何房源名称。请参阅以下属性比较表,确定您是否需要修改代码以适应缺失或添加的属性(例如在过滤或处理过程中)。如需查看集合 2 属性说明,请参阅商品目录页面中的“图片属性”标签页。
展开即可比较房源列表
Collection 1 | Collection 2 |
---|---|
CLOUD_COVER | CLOUD_COVER |
CLOUD_COVER_LAND | CLOUD_COVER_LAND |
COLLECTION_CATEGORY | COLLECTION_CATEGORY |
COLLECTION_NUMBER | COLLECTION_NUMBER |
CORRECTION_BIAS_BAND_1 | CORRECTION_BIAS_BAND_1 |
CORRECTION_BIAS_BAND_2 | CORRECTION_BIAS_BAND_2 |
CORRECTION_BIAS_BAND_3 | CORRECTION_BIAS_BAND_3 |
CORRECTION_BIAS_BAND_4 | CORRECTION_BIAS_BAND_4 |
CORRECTION_BIAS_BAND_5 | CORRECTION_BIAS_BAND_5 |
CORRECTION_BIAS_BAND_6_VCID_1 | CORRECTION_BIAS_BAND_6_VCID_1 |
CORRECTION_BIAS_BAND_6_VCID_2 | CORRECTION_BIAS_BAND_6_VCID_2 |
CORRECTION_BIAS_BAND_7 | CORRECTION_BIAS_BAND_7 |
CORRECTION_BIAS_BAND_8 | CORRECTION_BIAS_BAND_8 |
CORRECTION_GAIN_BAND_1 | CORRECTION_GAIN_BAND_1 |
CORRECTION_GAIN_BAND_2 | CORRECTION_GAIN_BAND_2 |
CORRECTION_GAIN_BAND_3 | CORRECTION_GAIN_BAND_3 |
CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
CORRECTION_GAIN_BAND_6_VCID_1 | CORRECTION_GAIN_BAND_6_VCID_1 |
CORRECTION_GAIN_BAND_6_VCID_2 | CORRECTION_GAIN_BAND_6_VCID_2 |
CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
CORRECTION_GAIN_BAND_8 | CORRECTION_GAIN_BAND_8 |
CPF_NAME | |
DATA_CATEGORY | |
DATA_SOURCE_ELEVATION | |
DATA_TYPE | |
DATE_ACQUIRED | DATE_ACQUIRED |
DATE_PRODUCT_GENERATED | |
DATUM | DATUM |
EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
ELEVATION_SOURCE | |
ELLIPSOID | ELLIPSOID |
EPHEMERIS_TYPE | EPHEMERIS_TYPE |
FILE_DATE | |
GAIN_BAND_1 | GAIN_BAND_1 |
GAIN_BAND_2 | GAIN_BAND_2 |
GAIN_BAND_3 | GAIN_BAND_3 |
GAIN_BAND_4 | GAIN_BAND_4 |
GAIN_BAND_5 | GAIN_BAND_5 |
GAIN_BAND_6_VCID_1 | GAIN_BAND_6_VCID_1 |
GAIN_BAND_6_VCID_2 | GAIN_BAND_6_VCID_2 |
GAIN_BAND_7 | GAIN_BAND_7 |
GAIN_BAND_8 | GAIN_BAND_8 |
GAIN_CHANGE_BAND_1 | GAIN_CHANGE_BAND_1 |
GAIN_CHANGE_BAND_2 | GAIN_CHANGE_BAND_2 |
GAIN_CHANGE_BAND_3 | GAIN_CHANGE_BAND_3 |
GAIN_CHANGE_BAND_4 | GAIN_CHANGE_BAND_4 |
GAIN_CHANGE_BAND_5 | GAIN_CHANGE_BAND_5 |
GAIN_CHANGE_BAND_6_VCID_1 | GAIN_CHANGE_BAND_6_VCID_1 |
GAIN_CHANGE_BAND_6_VCID_2 | GAIN_CHANGE_BAND_6_VCID_2 |
GAIN_CHANGE_BAND_7 | GAIN_CHANGE_BAND_7 |
GAIN_CHANGE_BAND_8 | GAIN_CHANGE_BAND_8 |
GAIN_CHANGE_SCAN_BAND_1 | GAIN_CHANGE_SCAN_BAND_1 |
GAIN_CHANGE_SCAN_BAND_2 | GAIN_CHANGE_SCAN_BAND_2 |
GAIN_CHANGE_SCAN_BAND_3 | GAIN_CHANGE_SCAN_BAND_3 |
GAIN_CHANGE_SCAN_BAND_4 | GAIN_CHANGE_SCAN_BAND_4 |
GAIN_CHANGE_SCAN_BAND_5 | GAIN_CHANGE_SCAN_BAND_5 |
GAIN_CHANGE_SCAN_BAND_6_VCID_1 | GAIN_CHANGE_SCAN_BAND_6_VCID_1 |
GAIN_CHANGE_SCAN_BAND_6_VCID_2 | GAIN_CHANGE_SCAN_BAND_6_VCID_2 |
GAIN_CHANGE_SCAN_BAND_7 | GAIN_CHANGE_SCAN_BAND_7 |
GAIN_CHANGE_SCAN_BAND_8 | GAIN_CHANGE_SCAN_BAND_8 |
GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
GRID_CELL_SIZE_PANCHROMATIC | GRID_CELL_SIZE_PANCHROMATIC |
GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
IMAGE_QUALITY | IMAGE_QUALITY |
K1_CONSTANT_BAND_6_VCID_1 | K1_CONSTANT_BAND_6_VCID_1 |
K1_CONSTANT_BAND_6_VCID_2 | K1_CONSTANT_BAND_6_VCID_2 |
K2_CONSTANT_BAND_6_VCID_1 | K2_CONSTANT_BAND_6_VCID_1 |
K2_CONSTANT_BAND_6_VCID_2 | K2_CONSTANT_BAND_6_VCID_2 |
LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
MAP_PROJECTION | MAP_PROJECTION |
方向 | 方向 |
PANCHROMATIC_LINES | PANCHROMATIC_LINES |
PANCHROMATIC_SAMPLES | PANCHROMATIC_SAMPLES |
PROCESSING_LEVEL | |
PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
RADIANCE_ADD_BAND_6_VCID_1 | RADIANCE_ADD_BAND_6_VCID_1 |
RADIANCE_ADD_BAND_6_VCID_2 | RADIANCE_ADD_BAND_6_VCID_2 |
RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
RADIANCE_ADD_BAND_8 | RADIANCE_ADD_BAND_8 |
RADIANCE_MAXIMUM_BAND_1 | |
RADIANCE_MAXIMUM_BAND_2 | |
RADIANCE_MAXIMUM_BAND_3 | |
RADIANCE_MAXIMUM_BAND_4 | |
RADIANCE_MAXIMUM_BAND_5 | |
RADIANCE_MAXIMUM_BAND_6_VCID_1 | |
RADIANCE_MAXIMUM_BAND_6_VCID_2 | |
RADIANCE_MAXIMUM_BAND_7 | |
RADIANCE_MAXIMUM_BAND_8 | |
RADIANCE_MINIMUM_BAND_1 | |
RADIANCE_MINIMUM_BAND_2 | |
RADIANCE_MINIMUM_BAND_3 | |
RADIANCE_MINIMUM_BAND_4 | |
RADIANCE_MINIMUM_BAND_5 | |
RADIANCE_MINIMUM_BAND_6_VCID_1 | |
RADIANCE_MINIMUM_BAND_6_VCID_2 | |
RADIANCE_MINIMUM_BAND_7 | |
RADIANCE_MINIMUM_BAND_8 | |
RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
RADIANCE_MULT_BAND_6_VCID_1 | RADIANCE_MULT_BAND_6_VCID_1 |
RADIANCE_MULT_BAND_6_VCID_2 | RADIANCE_MULT_BAND_6_VCID_2 |
RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
RADIANCE_MULT_BAND_8 | RADIANCE_MULT_BAND_8 |
REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
REFLECTANCE_ADD_BAND_8 | REFLECTANCE_ADD_BAND_8 |
REFLECTANCE_MAXIMUM_BAND_1 | |
REFLECTANCE_MAXIMUM_BAND_2 | |
REFLECTANCE_MAXIMUM_BAND_3 | |
REFLECTANCE_MAXIMUM_BAND_4 | |
REFLECTANCE_MAXIMUM_BAND_5 | |
REFLECTANCE_MAXIMUM_BAND_7 | |
REFLECTANCE_MAXIMUM_BAND_8 | |
REFLECTANCE_MINIMUM_BAND_1 | |
REFLECTANCE_MINIMUM_BAND_2 | |
REFLECTANCE_MINIMUM_BAND_3 | |
REFLECTANCE_MINIMUM_BAND_4 | |
REFLECTANCE_MINIMUM_BAND_5 | |
REFLECTANCE_MINIMUM_BAND_7 | |
REFLECTANCE_MINIMUM_BAND_8 | |
REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
REFLECTANCE_MULT_BAND_8 | REFLECTANCE_MULT_BAND_8 |
REFLECTIVE_LINES | REFLECTIVE_LINES |
REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
REQUEST_ID | REQUEST_ID |
RESAMPLING_OPTION | RESAMPLING_OPTION |
SATURATION_BAND_1 | SATURATION_BAND_1 |
SATURATION_BAND_2 | SATURATION_BAND_2 |
SATURATION_BAND_3 | SATURATION_BAND_3 |
SATURATION_BAND_4 | SATURATION_BAND_4 |
SATURATION_BAND_5 | SATURATION_BAND_5 |
SATURATION_BAND_6_VCID_1 | SATURATION_BAND_6_VCID_1 |
SATURATION_BAND_6_VCID_2 | SATURATION_BAND_6_VCID_2 |
SATURATION_BAND_7 | SATURATION_BAND_7 |
SATURATION_BAND_8 | SATURATION_BAND_8 |
SCENE_CENTER_TIME | SCENE_CENTER_TIME |
SENSOR_ANOMALIES | |
SENSOR_ID | SENSOR_ID |
SENSOR_MODE | SENSOR_MODE |
SENSOR_MODE_SLC | |
SPACECRAFT_ID | SPACECRAFT_ID |
STATION_ID | STATION_ID |
SUN_AZIMUTH | SUN_AZIMUTH |
SUN_ELEVATION | SUN_ELEVATION |
THERMAL_LINES | THERMAL_LINES |
THERMAL_SAMPLES | THERMAL_SAMPLES |
UTM_ZONE | UTM_ZONE |
WRS_PATH | WRS_PATH |
WRS_ROW | WRS_ROW |
WRS_TYPE | |
google:registration_count | |
google:registration_offset_x | |
google:registration_offset_y | |
google:registration_ratio |
TM
资产 ID
将图片和集合 ID 中的 C01
替换为 C02
。例如,Landsat 5 TM Tier 1:
Collection 1 | Collection 2 |
---|---|
LANDSAT/LT05/C01/T1_TOA | LANDSAT/LT05/C02/T1_TOA |
频段名称
请注意频段名称的更改以及新频段的添加。
展开可查看乐队名称变更和新乐队的添加
说明 | 集合 1 名称 | 集合 2 名称 |
---|---|---|
蓝色 | B1 | B1 |
绿色 | B2 | B2 |
红色 | B3 | B3 |
近红外 | B4 | B4 |
短波红外 1 | B5 | B5 |
热红外 1 | B6 | B6 |
短波红外 2 | B7 | B7 |
QA 位掩码 | BQA | QA_PIXEL |
辐射饱和度质量检查 | QA_RADSAT | |
太阳方位角 | SAA | |
太阳天顶角 | SZA | |
查看方位角 | VAA | |
查看天顶角 | VZA |
更新用于选择名称已更改的频段的代码,例如 QA 位掩码频段:
Collection 1 | Collection 2 |
---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
价值缩放
无需进行任何变更。集合 1 和集合 2 的大气层顶部反射率和热值具有相同的缩放比例。
QA 掩盖
QA 位掩码的位代码已更改。 如需了解代码(例如 TM 5)的位掩码,请参阅目录条目中的“QA_PIXEL 的位掩码”(Collection 2)和“BQA 的位掩码”(Collection 1)部分。
以下表达式使用 Collection 2 QA 位掩码代码为指定图片创建云和阴影掩码。
代码编辑器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
图片属性
在从集合 1 过渡到集合 2 的过程中,添加了一些图片属性,并移除了一些图片属性。未更改任何房源名称。请参阅以下属性比较表,确定您是否需要修改代码以适应缺失或添加的属性(例如在过滤或处理过程中)。如需了解 Collection 2 属性说明(例如 TM 5),请参阅商品目录页面中的“图片属性”标签页。
展开即可比较房源列表
Collection 1 | Collection 2 |
---|---|
CLOUD_COVER | CLOUD_COVER |
CLOUD_COVER_LAND | CLOUD_COVER_LAND |
COLLECTION_CATEGORY | COLLECTION_CATEGORY |
COLLECTION_NUMBER | COLLECTION_NUMBER |
CORNER_LL_LAT_PRODUCT | |
CORNER_LL_LON_PRODUCT | |
CORNER_LL_PROJECTION_X_PRODUCT | |
CORNER_LL_PROJECTION_Y_PRODUCT | |
CORNER_LR_LAT_PRODUCT | |
CORNER_LR_LON_PRODUCT | |
CORNER_LR_PROJECTION_X_PRODUCT | |
CORNER_LR_PROJECTION_Y_PRODUCT | |
CORNER_UL_LAT_PRODUCT | |
CORNER_UL_LON_PRODUCT | |
CORNER_UL_PROJECTION_X_PRODUCT | |
CORNER_UL_PROJECTION_Y_PRODUCT | |
CORNER_UR_LAT_PRODUCT | |
CORNER_UR_LON_PRODUCT | |
CORNER_UR_PROJECTION_X_PRODUCT | |
CORNER_UR_PROJECTION_Y_PRODUCT | |
CORRECTION_BIAS_BAND_1 | CORRECTION_BIAS_BAND_1 |
CORRECTION_BIAS_BAND_2 | CORRECTION_BIAS_BAND_2 |
CORRECTION_BIAS_BAND_3 | CORRECTION_BIAS_BAND_3 |
CORRECTION_BIAS_BAND_4 | CORRECTION_BIAS_BAND_4 |
CORRECTION_BIAS_BAND_5 | CORRECTION_BIAS_BAND_5 |
CORRECTION_BIAS_BAND_6 | CORRECTION_BIAS_BAND_6 |
CORRECTION_BIAS_BAND_7 | CORRECTION_BIAS_BAND_7 |
CORRECTION_GAIN_BAND_1 | CORRECTION_GAIN_BAND_1 |
CORRECTION_GAIN_BAND_2 | CORRECTION_GAIN_BAND_2 |
CORRECTION_GAIN_BAND_3 | CORRECTION_GAIN_BAND_3 |
CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
CORRECTION_GAIN_BAND_6 | CORRECTION_GAIN_BAND_6 |
CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
CPF_NAME | |
DATA_CATEGORY | |
DATA_SOURCE_ELEVATION | |
DATA_TYPE | |
DATA_TYPE_L0RP | DATA_TYPE_L0RP |
DATE_ACQUIRED | DATE_ACQUIRED |
DATE_PRODUCT_GENERATED | |
DATUM | DATUM |
EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
ELEVATION_SOURCE | |
ELLIPSOID | ELLIPSOID |
EPHEMERIS_TYPE | EPHEMERIS_TYPE |
FILE_DATE | |
GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
GEOMETRIC_RMSE_VERIFY_QUAD_LL | GEOMETRIC_RMSE_VERIFY_QUAD_LL |
GEOMETRIC_RMSE_VERIFY_QUAD_LR | GEOMETRIC_RMSE_VERIFY_QUAD_LR |
GEOMETRIC_RMSE_VERIFY_QUAD_UL | GEOMETRIC_RMSE_VERIFY_QUAD_UL |
GEOMETRIC_RMSE_VERIFY_QUAD_UR | GEOMETRIC_RMSE_VERIFY_QUAD_UR |
GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
IMAGE_QUALITY | IMAGE_QUALITY |
K1_CONSTANT_BAND_6 | K1_CONSTANT_BAND_6 |
K2_CONSTANT_BAND_6 | K2_CONSTANT_BAND_6 |
LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
MAP_PROJECTION | MAP_PROJECTION |
MAP_PROJECTION_L0RA | MAP_PROJECTION_L0RA |
方向 | 方向 |
PROCESSING_LEVEL | |
PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
RADIANCE_MAXIMUM_BAND_1 | |
RADIANCE_MAXIMUM_BAND_2 | |
RADIANCE_MAXIMUM_BAND_3 | |
RADIANCE_MAXIMUM_BAND_4 | |
RADIANCE_MAXIMUM_BAND_5 | |
RADIANCE_MAXIMUM_BAND_6 | |
RADIANCE_MAXIMUM_BAND_7 | |
RADIANCE_MINIMUM_BAND_1 | |
RADIANCE_MINIMUM_BAND_2 | |
RADIANCE_MINIMUM_BAND_3 | |
RADIANCE_MINIMUM_BAND_4 | |
RADIANCE_MINIMUM_BAND_5 | |
RADIANCE_MINIMUM_BAND_6 | |
RADIANCE_MINIMUM_BAND_7 | |
RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
REFLECTANCE_MAXIMUM_BAND_1 | |
REFLECTANCE_MAXIMUM_BAND_2 | |
REFLECTANCE_MAXIMUM_BAND_3 | |
REFLECTANCE_MAXIMUM_BAND_4 | |
REFLECTANCE_MAXIMUM_BAND_5 | |
REFLECTANCE_MAXIMUM_BAND_7 | |
REFLECTANCE_MINIMUM_BAND_1 | |
REFLECTANCE_MINIMUM_BAND_2 | |
REFLECTANCE_MINIMUM_BAND_3 | |
REFLECTANCE_MINIMUM_BAND_4 | |
REFLECTANCE_MINIMUM_BAND_5 | |
REFLECTANCE_MINIMUM_BAND_7 | |
REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
REFLECTIVE_LINES | REFLECTIVE_LINES |
REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
REQUEST_ID | REQUEST_ID |
RESAMPLING_OPTION | RESAMPLING_OPTION |
SATURATION_BAND_1 | SATURATION_BAND_1 |
SATURATION_BAND_2 | SATURATION_BAND_2 |
SATURATION_BAND_3 | SATURATION_BAND_3 |
SATURATION_BAND_4 | SATURATION_BAND_4 |
SATURATION_BAND_5 | SATURATION_BAND_5 |
SATURATION_BAND_6 | SATURATION_BAND_6 |
SATURATION_BAND_7 | SATURATION_BAND_7 |
SCENE_CENTER_TIME | SCENE_CENTER_TIME |
SENSOR_ANOMALIES | |
SENSOR_ID | SENSOR_ID |
SENSOR_MODE | SENSOR_MODE |
SENSOR_MODE_SLC | |
SPACECRAFT_ID | SPACECRAFT_ID |
STATION_ID | STATION_ID |
SUN_AZIMUTH | SUN_AZIMUTH |
SUN_ELEVATION | SUN_ELEVATION |
THERMAL_LINES | THERMAL_LINES |
THERMAL_SAMPLES | THERMAL_SAMPLES |
UTM_ZONE | UTM_ZONE |
WRS_PATH | WRS_PATH |
WRS_ROW | WRS_ROW |
WRS_TYPE | |
google:registration_count | |
google:registration_offset_x | |
google:registration_offset_y | |
google:registration_ratio |
缩放后的辐射亮度 (DN)
OLI
资产 ID
将图片和集合 ID 中的 C01
替换为 C02
。例如,Landsat 8 OLI Tier 1(Landsat 9 OLI-2 未包含在集合 1 中):
Collection 1 | Collection 2 |
---|---|
LANDSAT/LC08/C01/T1 | LANDSAT/LC08/C02/T1 |
频段名称
请注意频段名称的更改以及新频段的添加。
展开可查看乐队名称变更和新乐队的添加
说明 | 集合 1 名称 | 集合 2 名称 |
---|---|---|
沿海气溶胶 | B1 | B1 |
蓝色 | B2 | B2 |
绿色 | B3 | B3 |
红色 | B4 | B4 |
近红外 | B5 | B5 |
短波红外 1 | B6 | B6 |
短波红外 2 | B7 | B7 |
Panchromatic | B8 | B8 |
Cirrus | B9 | B9 |
热红外 1 | B10 | B10 |
红外热成像 2 | B11 | B11 |
QA 位掩码 | BQA | QA_PIXEL |
辐射饱和度质量检查 | QA_RADSAT | |
太阳方位角 | SAA | |
太阳天顶角 | SZA | |
查看方位角 | VAA | |
查看天顶角 | VZA |
更新用于选择名称已更改的频段的代码,例如 QA 位掩码频段:
Collection 1 | Collection 2 |
---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
价值缩放
无需进行任何变更。集合 1 和集合 2 的原始 DN 反射率和热值具有相同的缩放比例。
QA 掩盖
QA 位掩码的位代码已更改。 请参阅目录条目中有关代码的“QA_PIXEL 的位掩码”(集合 2)和“BQA 的位掩码”(集合 1)部分。
以下表达式使用 Collection 2 QA 位掩码代码为指定图片创建云和阴影掩码。
代码编辑器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
图片属性
在从集合 1 过渡到集合 2 的过程中,添加了一些图片属性,并移除了一些图片属性。未更改任何房源名称。请参阅以下属性比较表,确定您是否需要修改代码以适应缺失或添加的属性(例如在过滤或处理过程中)。如需查看集合 2 属性说明,请参阅商品目录页面中的“图片属性”标签页。
展开即可比较房源列表
Collection 1 | Collection 2 |
---|---|
BPF_NAME_OLI | |
BPF_NAME_TIRS | |
CLOUD_COVER | CLOUD_COVER |
CLOUD_COVER_LAND | CLOUD_COVER_LAND |
COLLECTION_CATEGORY | COLLECTION_CATEGORY |
COLLECTION_NUMBER | COLLECTION_NUMBER |
CPF_NAME | |
DATA_SOURCE_ELEVATION | |
DATA_SOURCE_TIRS_STRAY_LIGHT_CORRECTION | |
DATA_TYPE | |
DATE_ACQUIRED | DATE_ACQUIRED |
DATE_PRODUCT_GENERATED | |
DATUM | DATUM |
EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
ELEVATION_SOURCE | |
ELLIPSOID | ELLIPSOID |
FILE_DATE | |
GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
GRID_CELL_SIZE_PANCHROMATIC | GRID_CELL_SIZE_PANCHROMATIC |
GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
IMAGE_QUALITY_OLI | IMAGE_QUALITY_OLI |
IMAGE_QUALITY_TIRS | IMAGE_QUALITY_TIRS |
K1_CONSTANT_BAND_10 | K1_CONSTANT_BAND_10 |
K1_CONSTANT_BAND_11 | K1_CONSTANT_BAND_11 |
K2_CONSTANT_BAND_10 | K2_CONSTANT_BAND_10 |
K2_CONSTANT_BAND_11 | K2_CONSTANT_BAND_11 |
LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
MAP_PROJECTION | MAP_PROJECTION |
NADIR_OFFNADIR | NADIR_OFFNADIR |
方向 | 方向 |
PANCHROMATIC_LINES | PANCHROMATIC_LINES |
PANCHROMATIC_SAMPLES | PANCHROMATIC_SAMPLES |
PROCESSING_LEVEL | |
PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
RADIANCE_ADD_BAND_10 | RADIANCE_ADD_BAND_10 |
RADIANCE_ADD_BAND_11 | RADIANCE_ADD_BAND_11 |
RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
RADIANCE_ADD_BAND_8 | RADIANCE_ADD_BAND_8 |
RADIANCE_ADD_BAND_9 | RADIANCE_ADD_BAND_9 |
RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
RADIANCE_MULT_BAND_10 | RADIANCE_MULT_BAND_10 |
RADIANCE_MULT_BAND_11 | RADIANCE_MULT_BAND_11 |
RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
RADIANCE_MULT_BAND_8 | RADIANCE_MULT_BAND_8 |
RADIANCE_MULT_BAND_9 | RADIANCE_MULT_BAND_9 |
REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
REFLECTANCE_ADD_BAND_6 | REFLECTANCE_ADD_BAND_6 |
REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
REFLECTANCE_ADD_BAND_8 | REFLECTANCE_ADD_BAND_8 |
REFLECTANCE_ADD_BAND_9 | REFLECTANCE_ADD_BAND_9 |
REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
REFLECTANCE_MULT_BAND_6 | REFLECTANCE_MULT_BAND_6 |
REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
REFLECTANCE_MULT_BAND_8 | REFLECTANCE_MULT_BAND_8 |
REFLECTANCE_MULT_BAND_9 | REFLECTANCE_MULT_BAND_9 |
REFLECTIVE_LINES | REFLECTIVE_LINES |
REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
REQUEST_ID | REQUEST_ID |
RESAMPLING_OPTION | RESAMPLING_OPTION |
RLUT_FILE_NAME | |
ROLL_ANGLE | ROLL_ANGLE |
SATURATION_BAND_1 | SATURATION_BAND_1 |
SATURATION_BAND_2 | SATURATION_BAND_2 |
SATURATION_BAND_3 | SATURATION_BAND_3 |
SATURATION_BAND_4 | SATURATION_BAND_4 |
SATURATION_BAND_5 | SATURATION_BAND_5 |
SATURATION_BAND_6 | SATURATION_BAND_6 |
SATURATION_BAND_7 | SATURATION_BAND_7 |
SATURATION_BAND_8 | SATURATION_BAND_8 |
SATURATION_BAND_9 | SATURATION_BAND_9 |
SCENE_CENTER_TIME | SCENE_CENTER_TIME |
SENSOR_ID | SENSOR_ID |
SPACECRAFT_ID | SPACECRAFT_ID |
STATION_ID | STATION_ID |
SUN_AZIMUTH | SUN_AZIMUTH |
SUN_ELEVATION | SUN_ELEVATION |
TARGET_WRS_PATH | TARGET_WRS_PATH |
TARGET_WRS_ROW | TARGET_WRS_ROW |
THERMAL_LINES | THERMAL_LINES |
THERMAL_SAMPLES | THERMAL_SAMPLES |
TIRS_SSM_MODEL | TIRS_SSM_MODEL |
TIRS_SSM_POSITION_STATUS | TIRS_SSM_POSITION_STATUS |
TIRS_STRAY_LIGHT_CORRECTION_SOURCE | |
TRUNCATION_OLI | TRUNCATION_OLI |
UTM_ZONE | UTM_ZONE |
WRS_PATH | WRS_PATH |
WRS_ROW | WRS_ROW |
WRS_TYPE | |
google:registration_count | |
google:registration_offset_x | |
google:registration_offset_y | |
google:registration_ratio |
ETM+
资产 ID
将图片和集合 ID 中的 C01
替换为 C02
。例如,Landsat 7 ETM+ Tier 1:
Collection 1 | Collection 2 |
---|---|
LANDSAT/LE07/C01/T1 | LANDSAT/LE07/C02/T1 |
频段名称
请注意频段名称的更改以及新频段的添加。
展开可查看乐队名称变更和新乐队的添加
说明 | 集合 1 名称 | 集合 2 名称 |
---|---|---|
蓝色 | B1 | B1 |
绿色 | B2 | B2 |
红色 | B3 | B3 |
近红外 | B4 | B4 |
短波红外 1 | B5 | B5 |
低增益热红外 1 | B6_VCID_1 | B6_VCID_1 |
高增益热红外 1 | B6_VCID_2 | B6_VCID_2 |
短波红外 2 | B7 | B7 |
Panchromatic | B8 | B8 |
QA 位掩码 | BQA | QA_PIXEL |
辐射饱和度质量检查 | QA_RADSAT | |
太阳方位角 | SAA | |
太阳天顶角 | SZA | |
查看方位角 | VAA | |
查看天顶角 | VZA |
更新用于选择名称已更改的频段的代码,例如 QA 位掩码频段:
Collection 1 | Collection 2 |
---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
价值缩放
无需进行任何变更。集合 1 和集合 2 的原始 DN 反射率和热值具有相同的缩放比例。
QA 掩盖
QA 位掩码的位代码已更改。 请参阅目录条目中有关代码的“QA_PIXEL 的位掩码”(集合 2)和“BQA 的位掩码”(集合 1)部分。
以下表达式使用 Collection 2 QA 位掩码代码为指定图片创建云和阴影掩码。
代码编辑器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
图片属性
在从集合 1 过渡到集合 2 的过程中,添加了一些图片属性,并移除了一些图片属性。未更改任何房源名称。请参阅以下属性比较表,确定您是否需要修改代码以适应缺失或添加的属性(例如在过滤或处理过程中)。如需查看集合 2 属性说明,请参阅商品目录页面中的“图片属性”标签页。
展开即可比较房源列表
Collection 1 | Collection 2 |
---|---|
CLOUD_COVER | CLOUD_COVER |
CLOUD_COVER_LAND | CLOUD_COVER_LAND |
COLLECTION_CATEGORY | COLLECTION_CATEGORY |
COLLECTION_NUMBER | COLLECTION_NUMBER |
CORRECTION_BIAS_BAND_1 | CORRECTION_BIAS_BAND_1 |
CORRECTION_BIAS_BAND_2 | CORRECTION_BIAS_BAND_2 |
CORRECTION_BIAS_BAND_3 | CORRECTION_BIAS_BAND_3 |
CORRECTION_BIAS_BAND_4 | CORRECTION_BIAS_BAND_4 |
CORRECTION_BIAS_BAND_5 | CORRECTION_BIAS_BAND_5 |
CORRECTION_BIAS_BAND_6_VCID_1 | CORRECTION_BIAS_BAND_6_VCID_1 |
CORRECTION_BIAS_BAND_6_VCID_2 | CORRECTION_BIAS_BAND_6_VCID_2 |
CORRECTION_BIAS_BAND_7 | CORRECTION_BIAS_BAND_7 |
CORRECTION_BIAS_BAND_8 | CORRECTION_BIAS_BAND_8 |
CORRECTION_GAIN_BAND_1 | CORRECTION_GAIN_BAND_1 |
CORRECTION_GAIN_BAND_2 | CORRECTION_GAIN_BAND_2 |
CORRECTION_GAIN_BAND_3 | CORRECTION_GAIN_BAND_3 |
CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
CORRECTION_GAIN_BAND_6_VCID_1 | CORRECTION_GAIN_BAND_6_VCID_1 |
CORRECTION_GAIN_BAND_6_VCID_2 | CORRECTION_GAIN_BAND_6_VCID_2 |
CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
CORRECTION_GAIN_BAND_8 | CORRECTION_GAIN_BAND_8 |
CPF_NAME | |
DATA_CATEGORY | |
DATA_SOURCE_ELEVATION | |
DATA_TYPE | |
DATE_ACQUIRED | DATE_ACQUIRED |
DATE_PRODUCT_GENERATED | |
DATUM | DATUM |
EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
ELEVATION_SOURCE | |
ELLIPSOID | ELLIPSOID |
EPHEMERIS_TYPE | EPHEMERIS_TYPE |
FILE_DATE | |
GAIN_BAND_1 | GAIN_BAND_1 |
GAIN_BAND_2 | GAIN_BAND_2 |
GAIN_BAND_3 | GAIN_BAND_3 |
GAIN_BAND_4 | GAIN_BAND_4 |
GAIN_BAND_5 | GAIN_BAND_5 |
GAIN_BAND_6_VCID_1 | GAIN_BAND_6_VCID_1 |
GAIN_BAND_6_VCID_2 | GAIN_BAND_6_VCID_2 |
GAIN_BAND_7 | GAIN_BAND_7 |
GAIN_BAND_8 | GAIN_BAND_8 |
GAIN_CHANGE_BAND_1 | GAIN_CHANGE_BAND_1 |
GAIN_CHANGE_BAND_2 | GAIN_CHANGE_BAND_2 |
GAIN_CHANGE_BAND_3 | GAIN_CHANGE_BAND_3 |
GAIN_CHANGE_BAND_4 | GAIN_CHANGE_BAND_4 |
GAIN_CHANGE_BAND_5 | GAIN_CHANGE_BAND_5 |
GAIN_CHANGE_BAND_6_VCID_1 | GAIN_CHANGE_BAND_6_VCID_1 |
GAIN_CHANGE_BAND_6_VCID_2 | GAIN_CHANGE_BAND_6_VCID_2 |
GAIN_CHANGE_BAND_7 | GAIN_CHANGE_BAND_7 |
GAIN_CHANGE_BAND_8 | GAIN_CHANGE_BAND_8 |
GAIN_CHANGE_SCAN_BAND_1 | GAIN_CHANGE_SCAN_BAND_1 |
GAIN_CHANGE_SCAN_BAND_2 | GAIN_CHANGE_SCAN_BAND_2 |
GAIN_CHANGE_SCAN_BAND_3 | GAIN_CHANGE_SCAN_BAND_3 |
GAIN_CHANGE_SCAN_BAND_4 | GAIN_CHANGE_SCAN_BAND_4 |
GAIN_CHANGE_SCAN_BAND_5 | GAIN_CHANGE_SCAN_BAND_5 |
GAIN_CHANGE_SCAN_BAND_6_VCID_1 | GAIN_CHANGE_SCAN_BAND_6_VCID_1 |
GAIN_CHANGE_SCAN_BAND_6_VCID_2 | GAIN_CHANGE_SCAN_BAND_6_VCID_2 |
GAIN_CHANGE_SCAN_BAND_7 | GAIN_CHANGE_SCAN_BAND_7 |
GAIN_CHANGE_SCAN_BAND_8 | GAIN_CHANGE_SCAN_BAND_8 |
GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
GRID_CELL_SIZE_PANCHROMATIC | GRID_CELL_SIZE_PANCHROMATIC |
GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
IMAGE_QUALITY | IMAGE_QUALITY |
K1_CONSTANT_BAND_6_VCID_1 | K1_CONSTANT_BAND_6_VCID_1 |
K1_CONSTANT_BAND_6_VCID_2 | K1_CONSTANT_BAND_6_VCID_2 |
K2_CONSTANT_BAND_6_VCID_1 | K2_CONSTANT_BAND_6_VCID_1 |
K2_CONSTANT_BAND_6_VCID_2 | K2_CONSTANT_BAND_6_VCID_2 |
LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
MAP_PROJECTION | MAP_PROJECTION |
方向 | 方向 |
PANCHROMATIC_LINES | PANCHROMATIC_LINES |
PANCHROMATIC_SAMPLES | PANCHROMATIC_SAMPLES |
PROCESSING_LEVEL | |
PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
RADIANCE_ADD_BAND_6_VCID_1 | RADIANCE_ADD_BAND_6_VCID_1 |
RADIANCE_ADD_BAND_6_VCID_2 | RADIANCE_ADD_BAND_6_VCID_2 |
RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
RADIANCE_ADD_BAND_8 | RADIANCE_ADD_BAND_8 |
RADIANCE_MAXIMUM_BAND_1 | |
RADIANCE_MAXIMUM_BAND_2 | |
RADIANCE_MAXIMUM_BAND_3 | |
RADIANCE_MAXIMUM_BAND_4 | |
RADIANCE_MAXIMUM_BAND_5 | |
RADIANCE_MAXIMUM_BAND_6_VCID_1 | |
RADIANCE_MAXIMUM_BAND_6_VCID_2 | |
RADIANCE_MAXIMUM_BAND_7 | |
RADIANCE_MAXIMUM_BAND_8 | |
RADIANCE_MINIMUM_BAND_1 | |
RADIANCE_MINIMUM_BAND_2 | |
RADIANCE_MINIMUM_BAND_3 | |
RADIANCE_MINIMUM_BAND_4 | |
RADIANCE_MINIMUM_BAND_5 | |
RADIANCE_MINIMUM_BAND_6_VCID_1 | |
RADIANCE_MINIMUM_BAND_6_VCID_2 | |
RADIANCE_MINIMUM_BAND_7 | |
RADIANCE_MINIMUM_BAND_8 | |
RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
RADIANCE_MULT_BAND_6_VCID_1 | RADIANCE_MULT_BAND_6_VCID_1 |
RADIANCE_MULT_BAND_6_VCID_2 | RADIANCE_MULT_BAND_6_VCID_2 |
RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
RADIANCE_MULT_BAND_8 | RADIANCE_MULT_BAND_8 |
REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
REFLECTANCE_ADD_BAND_8 | REFLECTANCE_ADD_BAND_8 |
REFLECTANCE_MAXIMUM_BAND_1 | |
REFLECTANCE_MAXIMUM_BAND_2 | |
REFLECTANCE_MAXIMUM_BAND_3 | |
REFLECTANCE_MAXIMUM_BAND_4 | |
REFLECTANCE_MAXIMUM_BAND_5 | |
REFLECTANCE_MAXIMUM_BAND_7 | |
REFLECTANCE_MAXIMUM_BAND_8 | |
REFLECTANCE_MINIMUM_BAND_1 | |
REFLECTANCE_MINIMUM_BAND_2 | |
REFLECTANCE_MINIMUM_BAND_3 | |
REFLECTANCE_MINIMUM_BAND_4 | |
REFLECTANCE_MINIMUM_BAND_5 | |
REFLECTANCE_MINIMUM_BAND_7 | |
REFLECTANCE_MINIMUM_BAND_8 | |
REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
REFLECTANCE_MULT_BAND_8 | REFLECTANCE_MULT_BAND_8 |
REFLECTIVE_LINES | REFLECTIVE_LINES |
REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
REQUEST_ID | REQUEST_ID |
RESAMPLING_OPTION | RESAMPLING_OPTION |
SATURATION_BAND_1 | SATURATION_BAND_1 |
SATURATION_BAND_2 | SATURATION_BAND_2 |
SATURATION_BAND_3 | SATURATION_BAND_3 |
SATURATION_BAND_4 | SATURATION_BAND_4 |
SATURATION_BAND_5 | SATURATION_BAND_5 |
SATURATION_BAND_6_VCID_1 | SATURATION_BAND_6_VCID_1 |
SATURATION_BAND_6_VCID_2 | SATURATION_BAND_6_VCID_2 |
SATURATION_BAND_7 | SATURATION_BAND_7 |
SATURATION_BAND_8 | SATURATION_BAND_8 |
SCENE_CENTER_TIME | SCENE_CENTER_TIME |
SENSOR_ANOMALIES | |
SENSOR_ID | SENSOR_ID |
SENSOR_MODE | SENSOR_MODE |
SENSOR_MODE_SLC | |
SPACECRAFT_ID | SPACECRAFT_ID |
STATION_ID | STATION_ID |
SUN_AZIMUTH | SUN_AZIMUTH |
SUN_ELEVATION | SUN_ELEVATION |
THERMAL_LINES | THERMAL_LINES |
THERMAL_SAMPLES | THERMAL_SAMPLES |
UTM_ZONE | UTM_ZONE |
WRS_PATH | WRS_PATH |
WRS_ROW | WRS_ROW |
WRS_TYPE | |
google:registration_count | |
google:registration_offset_x | |
google:registration_offset_y | |
google:registration_ratio |
TM
资产 ID
将图片和集合 ID 中的 C01
替换为 C02
。例如,Landsat 5 TM Tier 1:
Collection 1 | Collection 2 |
---|---|
LANDSAT/LT05/C01/T1 | LANDSAT/LT05/C02/T1 |
频段名称
请注意频段名称的更改以及新频段的添加。
展开可查看乐队名称变更和新乐队的添加
说明 | 集合 1 名称 | 集合 2 名称 |
---|---|---|
蓝色 | B1 | B1 |
绿色 | B2 | B2 |
红色 | B3 | B3 |
近红外 | B4 | B4 |
短波红外 1 | B5 | B5 |
热红外 1 | B6 | B6 |
短波红外 2 | B7 | B7 |
QA 位掩码 | BQA | QA_PIXEL |
辐射饱和度质量检查 | QA_RADSAT | |
太阳方位角 | SAA | |
太阳天顶角 | SZA | |
查看方位角 | VAA | |
查看天顶角 | VZA |
更新用于选择名称已更改的频段的代码,例如 QA 位掩码频段:
Collection 1 | Collection 2 |
---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
价值缩放
无需进行任何变更。集合 1 和集合 2 的原始 DN 反射率和热值具有相同的缩放比例。
QA 掩盖
QA 位掩码的位代码已更改。 如需了解代码(例如 TM 5)的位掩码,请参阅目录条目中的“QA_PIXEL 的位掩码”(Collection 2)和“BQA 的位掩码”(Collection 1)部分。
以下表达式使用 Collection 2 QA 位掩码代码为指定图片创建云和阴影掩码。
代码编辑器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
图片属性
在从集合 1 过渡到集合 2 的过程中,添加了一些图片属性,并移除了一些图片属性。未更改任何房源名称。请参阅以下属性比较表,确定您是否需要修改代码以适应缺失或添加的属性(例如在过滤或处理过程中)。如需了解集合 2 属性说明(例如 TM 5),请参阅商品目录页面中的“图片属性”标签页。
展开即可比较房源列表
Collection 1 | Collection 2 |
---|---|
CLOUD_COVER | CLOUD_COVER |
CLOUD_COVER_LAND | CLOUD_COVER_LAND |
COLLECTION_CATEGORY | COLLECTION_CATEGORY |
COLLECTION_NUMBER | COLLECTION_NUMBER |
CORNER_LL_LAT_PRODUCT | |
CORNER_LL_LON_PRODUCT | |
CORNER_LL_PROJECTION_X_PRODUCT | |
CORNER_LL_PROJECTION_Y_PRODUCT | |
CORNER_LR_LAT_PRODUCT | |
CORNER_LR_LON_PRODUCT | |
CORNER_LR_PROJECTION_X_PRODUCT | |
CORNER_LR_PROJECTION_Y_PRODUCT | |
CORNER_UL_LAT_PRODUCT | |
CORNER_UL_LON_PRODUCT | |
CORNER_UL_PROJECTION_X_PRODUCT | |
CORNER_UL_PROJECTION_Y_PRODUCT | |
CORNER_UR_LAT_PRODUCT | |
CORNER_UR_LON_PRODUCT | |
CORNER_UR_PROJECTION_X_PRODUCT | |
CORNER_UR_PROJECTION_Y_PRODUCT | |
CORRECTION_BIAS_BAND_1 | CORRECTION_BIAS_BAND_1 |
CORRECTION_BIAS_BAND_2 | CORRECTION_BIAS_BAND_2 |
CORRECTION_BIAS_BAND_3 | CORRECTION_BIAS_BAND_3 |
CORRECTION_BIAS_BAND_4 | CORRECTION_BIAS_BAND_4 |
CORRECTION_BIAS_BAND_5 | CORRECTION_BIAS_BAND_5 |
CORRECTION_BIAS_BAND_6 | CORRECTION_BIAS_BAND_6 |
CORRECTION_BIAS_BAND_7 | CORRECTION_BIAS_BAND_7 |
CORRECTION_GAIN_BAND_1 | CORRECTION_GAIN_BAND_1 |
CORRECTION_GAIN_BAND_2 | CORRECTION_GAIN_BAND_2 |
CORRECTION_GAIN_BAND_3 | CORRECTION_GAIN_BAND_3 |
CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
CORRECTION_GAIN_BAND_6 | CORRECTION_GAIN_BAND_6 |
CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
CPF_NAME | |
DATA_CATEGORY | |
DATA_SOURCE_ELEVATION | |
DATA_TYPE | |
DATA_TYPE_L0RP | DATA_TYPE_L0RP |
DATE_ACQUIRED | DATE_ACQUIRED |
DATE_PRODUCT_GENERATED | |
DATUM | DATUM |
EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
ELEVATION_SOURCE | |
ELLIPSOID | ELLIPSOID |
EPHEMERIS_TYPE | EPHEMERIS_TYPE |
FILE_DATE | |
GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
GEOMETRIC_RMSE_VERIFY_QUAD_LL | GEOMETRIC_RMSE_VERIFY_QUAD_LL |
GEOMETRIC_RMSE_VERIFY_QUAD_LR | GEOMETRIC_RMSE_VERIFY_QUAD_LR |
GEOMETRIC_RMSE_VERIFY_QUAD_UL | GEOMETRIC_RMSE_VERIFY_QUAD_UL |
GEOMETRIC_RMSE_VERIFY_QUAD_UR | GEOMETRIC_RMSE_VERIFY_QUAD_UR |
GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
GRID_CELL_SIZE_THERMAL | GRID_CELL_SIZE_THERMAL |
GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
IMAGE_QUALITY | IMAGE_QUALITY |
K1_CONSTANT_BAND_6 | K1_CONSTANT_BAND_6 |
K2_CONSTANT_BAND_6 | K2_CONSTANT_BAND_6 |
LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
MAP_PROJECTION | MAP_PROJECTION |
MAP_PROJECTION_L0RA | MAP_PROJECTION_L0RA |
方向 | 方向 |
PROCESSING_LEVEL | |
PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
RADIANCE_ADD_BAND_1 | RADIANCE_ADD_BAND_1 |
RADIANCE_ADD_BAND_2 | RADIANCE_ADD_BAND_2 |
RADIANCE_ADD_BAND_3 | RADIANCE_ADD_BAND_3 |
RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
RADIANCE_MAXIMUM_BAND_1 | |
RADIANCE_MAXIMUM_BAND_2 | |
RADIANCE_MAXIMUM_BAND_3 | |
RADIANCE_MAXIMUM_BAND_4 | |
RADIANCE_MAXIMUM_BAND_5 | |
RADIANCE_MAXIMUM_BAND_6 | |
RADIANCE_MAXIMUM_BAND_7 | |
RADIANCE_MINIMUM_BAND_1 | |
RADIANCE_MINIMUM_BAND_2 | |
RADIANCE_MINIMUM_BAND_3 | |
RADIANCE_MINIMUM_BAND_4 | |
RADIANCE_MINIMUM_BAND_5 | |
RADIANCE_MINIMUM_BAND_6 | |
RADIANCE_MINIMUM_BAND_7 | |
RADIANCE_MULT_BAND_1 | RADIANCE_MULT_BAND_1 |
RADIANCE_MULT_BAND_2 | RADIANCE_MULT_BAND_2 |
RADIANCE_MULT_BAND_3 | RADIANCE_MULT_BAND_3 |
RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
REFLECTANCE_ADD_BAND_1 | REFLECTANCE_ADD_BAND_1 |
REFLECTANCE_ADD_BAND_2 | REFLECTANCE_ADD_BAND_2 |
REFLECTANCE_ADD_BAND_3 | REFLECTANCE_ADD_BAND_3 |
REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
REFLECTANCE_MAXIMUM_BAND_1 | |
REFLECTANCE_MAXIMUM_BAND_2 | |
REFLECTANCE_MAXIMUM_BAND_3 | |
REFLECTANCE_MAXIMUM_BAND_4 | |
REFLECTANCE_MAXIMUM_BAND_5 | |
REFLECTANCE_MAXIMUM_BAND_7 | |
REFLECTANCE_MINIMUM_BAND_1 | |
REFLECTANCE_MINIMUM_BAND_2 | |
REFLECTANCE_MINIMUM_BAND_3 | |
REFLECTANCE_MINIMUM_BAND_4 | |
REFLECTANCE_MINIMUM_BAND_5 | |
REFLECTANCE_MINIMUM_BAND_7 | |
REFLECTANCE_MULT_BAND_1 | REFLECTANCE_MULT_BAND_1 |
REFLECTANCE_MULT_BAND_2 | REFLECTANCE_MULT_BAND_2 |
REFLECTANCE_MULT_BAND_3 | REFLECTANCE_MULT_BAND_3 |
REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
REFLECTIVE_LINES | REFLECTIVE_LINES |
REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
REQUEST_ID | REQUEST_ID |
RESAMPLING_OPTION | RESAMPLING_OPTION |
SATURATION_BAND_1 | SATURATION_BAND_1 |
SATURATION_BAND_2 | SATURATION_BAND_2 |
SATURATION_BAND_3 | SATURATION_BAND_3 |
SATURATION_BAND_4 | SATURATION_BAND_4 |
SATURATION_BAND_5 | SATURATION_BAND_5 |
SATURATION_BAND_6 | SATURATION_BAND_6 |
SATURATION_BAND_7 | SATURATION_BAND_7 |
SCENE_CENTER_TIME | SCENE_CENTER_TIME |
SENSOR_ANOMALIES | |
SENSOR_ID | SENSOR_ID |
SENSOR_MODE | SENSOR_MODE |
SPACECRAFT_ID | SENSOR_MODE_SLC |
STATION_ID | SPACECRAFT_ID |
STATION_ID | |
SUN_AZIMUTH | SUN_AZIMUTH |
SUN_ELEVATION | SUN_ELEVATION |
THERMAL_LINES | THERMAL_LINES |
THERMAL_SAMPLES | THERMAL_SAMPLES |
UTM_ZONE | UTM_ZONE |
WRS_PATH | WRS_PATH |
WRS_ROW | WRS_ROW |
WRS_TYPE | |
google:registration_count | |
google:registration_offset_x | |
google:registration_offset_y | |
google:registration_ratio |
MSS
资产 ID
将图片和集合 ID 中的 C01
替换为 C02
。例如,Landsat 1 MSS Tier 1:
Collection 1 | Collection 2 |
---|---|
LANDSAT/LM01/C01/T1 | LANDSAT/LM01/C02/T1 |
频段名称
请注意频段名称的更改以及新频段的添加。
展开可查看乐队名称变更和新乐队的添加
说明 | 集合 1 名称 | 集合 2 名称 |
---|---|---|
绿色 | B4 (MSS 1-3);B1 (MSS 4-5) | B4 (MSS 1-3);B1 (MSS 4-5) |
红色 | B5 (MSS 1-3);B2 (MSS 4-5) | B5 (MSS 1-3);B2 (MSS 4-5) |
近红外 1 | B6 (MSS 1-3);B3 (MSS 4-5) | B6 (MSS 1-3);B3 (MSS 4-5) |
近红外线 2 | B7 (MSS 1-3);B4 (MSS 4-5) | B7 (MSS 1-3);B4 (MSS 4-5) |
QA 位掩码 | BQA | QA_PIXEL |
辐射饱和度质量检查 | QA_RADSAT |
更新用于选择名称已更改的频段的代码,例如 QA 位掩码频段:
Collection 1 | Collection 2 |
---|---|
image.select('BQA') |
image.select('QA_PIXEL') |
价值缩放
无需进行任何变更。集合 1 和集合 2 的原始 DN 值具有相同的缩放比例。
QA 掩盖
QA 位掩码的位代码已更改。 如需查看代码(例如 MSS 1),请参阅目录条目中的“QA_PIXEL 的位掩码”(集合 2)和“BQA 的位掩码”(集合 1)部分。
以下表达式使用 Collection 2 QA 位掩码代码为指定图片创建云和阴影掩码。
代码编辑器 (JavaScript)
var qaMask = image.select('QA_PIXEL').bitwiseAnd(parseInt('11010', 2)).eq(0)
Colab (Python)
qa_mask = image.select('QA_PIXEL').bitwiseAnd(int('11010', 2)).eq(0)
图片属性
在从集合 1 过渡到集合 2 的过程中,添加了一些图片属性,并移除了一些图片属性。未更改任何房源名称。请参阅以下属性比较表,确定您是否需要修改代码以适应缺失或添加的属性(例如在过滤或处理过程中)。如需查看集合 2 属性说明(例如 MSS 1),请参阅商品目录页面中的“图片属性”标签页。
展开即可比较房源列表
Collection 1 | Collection 2 |
---|---|
CLOUD_COVER | CLOUD_COVER |
CLOUD_COVER_LAND | CLOUD_COVER_LAND |
COLLECTION_CATEGORY | COLLECTION_CATEGORY |
COLLECTION_NUMBER | COLLECTION_NUMBER |
CORRECTION_GAIN_BAND_4 | CORRECTION_GAIN_BAND_4 |
CORRECTION_GAIN_BAND_5 | CORRECTION_GAIN_BAND_5 |
CORRECTION_GAIN_BAND_6 | CORRECTION_GAIN_BAND_6 |
CORRECTION_GAIN_BAND_7 | CORRECTION_GAIN_BAND_7 |
CPF_NAME | |
DATA_CATEGORY | |
DATA_SOURCE_ELEVATION | |
DATA_TYPE | |
DATA_TYPE_L0RP | DATA_TYPE_L0RP |
DATE_ACQUIRED | DATE_ACQUIRED |
DATE_PRODUCT_GENERATED | |
DATUM | DATUM |
EARTH_SUN_DISTANCE | EARTH_SUN_DISTANCE |
ELEVATION_SOURCE | |
ELLIPSOID | ELLIPSOID |
EPHEMERIS_TYPE | EPHEMERIS_TYPE |
FILE_DATE | |
GAIN_BAND_4 | GAIN_BAND_4 |
GAIN_BAND_5 | GAIN_BAND_5 |
GAIN_BAND_6 | GAIN_BAND_6 |
GAIN_BAND_7 | GAIN_BAND_7 |
GEOMETRIC_RMSE_MODEL | GEOMETRIC_RMSE_MODEL |
GEOMETRIC_RMSE_MODEL_X | GEOMETRIC_RMSE_MODEL_X |
GEOMETRIC_RMSE_MODEL_Y | GEOMETRIC_RMSE_MODEL_Y |
GEOMETRIC_RMSE_VERIFY | GEOMETRIC_RMSE_VERIFY |
GEOMETRIC_RMSE_VERIFY_QUAD_LL | GEOMETRIC_RMSE_VERIFY_QUAD_LL |
GEOMETRIC_RMSE_VERIFY_QUAD_LR | GEOMETRIC_RMSE_VERIFY_QUAD_LR |
GEOMETRIC_RMSE_VERIFY_QUAD_UL | GEOMETRIC_RMSE_VERIFY_QUAD_UL |
GEOMETRIC_RMSE_VERIFY_QUAD_UR | GEOMETRIC_RMSE_VERIFY_QUAD_UR |
GRID_CELL_SIZE_REFLECTIVE | GRID_CELL_SIZE_REFLECTIVE |
GROUND_CONTROL_POINTS_MODEL | GROUND_CONTROL_POINTS_MODEL |
GROUND_CONTROL_POINTS_VERIFY | GROUND_CONTROL_POINTS_VERIFY |
GROUND_CONTROL_POINTS_VERSION | GROUND_CONTROL_POINTS_VERSION |
IMAGE_QUALITY | IMAGE_QUALITY |
LANDSAT_PRODUCT_ID | LANDSAT_PRODUCT_ID |
LANDSAT_SCENE_ID | LANDSAT_SCENE_ID |
MAP_PROJECTION | MAP_PROJECTION |
MAP_PROJECTION_L0RA | MAP_PROJECTION_L0RA |
方向 | 方向 |
PRESENT_BAND_4 | PRESENT_BAND_4 |
PRESENT_BAND_5 | PRESENT_BAND_5 |
PRESENT_BAND_6 | PRESENT_BAND_6 |
PRESENT_BAND_7 | PRESENT_BAND_7 |
PROCESSING_LEVEL | |
PROCESSING_SOFTWARE_VERSION | PROCESSING_SOFTWARE_VERSION |
RADIANCE_ADD_BAND_4 | RADIANCE_ADD_BAND_4 |
RADIANCE_ADD_BAND_5 | RADIANCE_ADD_BAND_5 |
RADIANCE_ADD_BAND_6 | RADIANCE_ADD_BAND_6 |
RADIANCE_ADD_BAND_7 | RADIANCE_ADD_BAND_7 |
RADIANCE_MULT_BAND_4 | RADIANCE_MULT_BAND_4 |
RADIANCE_MULT_BAND_5 | RADIANCE_MULT_BAND_5 |
RADIANCE_MULT_BAND_6 | RADIANCE_MULT_BAND_6 |
RADIANCE_MULT_BAND_7 | RADIANCE_MULT_BAND_7 |
REFLECTANCE_ADD_BAND_4 | REFLECTANCE_ADD_BAND_4 |
REFLECTANCE_ADD_BAND_5 | REFLECTANCE_ADD_BAND_5 |
REFLECTANCE_ADD_BAND_6 | REFLECTANCE_ADD_BAND_6 |
REFLECTANCE_ADD_BAND_7 | REFLECTANCE_ADD_BAND_7 |
REFLECTANCE_MULT_BAND_4 | REFLECTANCE_MULT_BAND_4 |
REFLECTANCE_MULT_BAND_5 | REFLECTANCE_MULT_BAND_5 |
REFLECTANCE_MULT_BAND_6 | REFLECTANCE_MULT_BAND_6 |
REFLECTANCE_MULT_BAND_7 | REFLECTANCE_MULT_BAND_7 |
REFLECTIVE_LINES | REFLECTIVE_LINES |
REFLECTIVE_SAMPLES | REFLECTIVE_SAMPLES |
REQUEST_ID | REQUEST_ID |
RESAMPLING_OPTION | RESAMPLING_OPTION |
SATURATION_BAND_4 | SATURATION_BAND_4 |
SATURATION_BAND_5 | SATURATION_BAND_5 |
SATURATION_BAND_6 | SATURATION_BAND_6 |
SATURATION_BAND_7 | SATURATION_BAND_7 |
SCENE_CENTER_TIME | SCENE_CENTER_TIME |
SENSOR_ID | SENSOR_ID |
SPACECRAFT_ID | SPACECRAFT_ID |
STATION_ID | STATION_ID |
SUN_AZIMUTH | SUN_AZIMUTH |
SUN_ELEVATION | SUN_ELEVATION |
UTM_ZONE | UTM_ZONE |
WRS_PATH | WRS_PATH |
WRS_ROW | WRS_ROW |
WRS_TYPE |
Landsat Pre-Collection
Earth Engine 数据归档包含 Landsat Pre-Collection 数据。可以通过缺少合集组件的图片和合集 ID 来识别。
- Collection 1 / Collection 2:
LANDSAT/[MISSION]/[COLLECTION]/[PRODUCT]
(例如,LANDSAT/LE07/C02/T1
) - 预收集:
LANDSAT/[MISSION]_[PRODUCT]
(例如,LANDSAT/LE7_L1T
)
如果您使用的是 Pre-Collection 数据,请尽快改用 Collection 2。请使用本指南中有关 Collection 2 的信息来更新您的脚本。
时间合成
Earth Engine 提供计算出的时间合成数据(8 天、32 天和年度)。 为 Collection 1 和预 Collection (PC/C1) 以及 Collection 2 (C2) 生成的影像之间存在一系列差异。您可以在 GitHub 上查看用于生成 C2 复合图像的代码。
地表反射率合成数据
C2 复合影像是根据 USGS L2 地表反射率产品生成的,而 PC/C1 复合影像是使用大气层顶部反射率生成的。
一个集合,包含所有乐器
PC/C1 复合指数被分离为一组针对每种乐器的时序指数复合指数。这主要是由于仪器之间的校准差异造成的。借助 C2 地表反射率数据,可以进行充分的交叉校准,从而将这些仪器的数据合并在一起。
严格过滤
C2 综合指标会更严格地过滤数据质量,包括:
- 由于轨道漂移 / 场景采集时间,将 L7 限制在 1999 年至 2017 年的范围内。
- 由于轨道稳定性问题,省略了 2013 年 5 月 1 日之前的 L8 数据。
- 省略了 WRS_ROW ≥ 122 的数据(无夜间图片)。
- 省略所有被 QA 标记为非透明的像素。
- 省略了 ATMOS_OPACITY > 300(雾霾)的 L4-L7 像素。
- 省略了存在任何 QA_AEROSOL 问题的 L8-L9 像素。
- 省略标记为饱和或值超出范围的任何像素。
中值合成
PC/C1 复合使用最后显示在顶部的合成。集合 2 复合使用中值合成器。
命名
PC/C1 复合路径的格式为
LANDSAT/INSTRUMENT/C01/T1_PERIOD_INDEX
,而 C2 复合路径的格式为LANDSAT/COMPOSITES/C02/T1_L2_PERIOD_INDEX
,其中 INSTRUMENT 是 LT04、LT05、LE07 或 LC08 之一,PERIOD 是 8DAY、32DAY 或 ANNUAL 之一。例如,下表显示了 C2 复合资产的路径,这些路径大致对应于每个指数的 C1 LC08 年度复合资产。请注意,由于每个 C2 复合数据中都包含 L4 到 L9 的所有相关数据,因此 C2 复合数据中不包含 INSTRUMENT。Collection 1 Collection 2 LANDSAT/LC08/C01/T1_ANNUAL_BAI LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_BAI LANDSAT/LC08/C01/T1_ANNUAL_EVI LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_EVI LANDSAT/LC08/C01/T1_ANNUAL_GREENEST_TOA LANDSAT/LC08/C01/T1_ANNUAL_NBRT LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_NBR LANDSAT/LC08/C01/T1_ANNUAL_NDSI 未生成,因为在合成过程中雪花像素被遮盖 LANDSAT/LC08/C01/T1_ANNUAL_NDVI LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_NDVI LANDSAT/LC08/C01/T1_ANNUAL_NDWI LANDSAT/COMPOSITES/C02/T1_L2_ANNUAL_NDWI LANDSAT/LC08/C01/T1_ANNUAL_RAW LANDSAT/LC08/C01/T1_ANNUAL_TOA