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USGS Landsat 4 TM 集合 2 第 1 层级原始场景
Landsat 4 TM 集合 2 第 1 层级 DN 值,表示经过放大和校准的传感器端辐射度。数据质量最高的 Landsat 场景会被划分到第 1 层级,并且被视为适合进行时间序列处理分析。第 1 层级包括经过处理的第 1 级精确地形 (L1TP) 数据,具有以下特点: c2 global l4 landsat lt4 radiance -
USGS Landsat 4 TM 集合 2 第 2 层级原始场景
Landsat 4 TM 集合 2 第 2 层级数字值,表示经过放大和校准的传感器辐射度。在处理过程中,如果场景不符合第 1 层级的条件,则会被分配到第 2 层级。这包括系统地形 (L1GT) 和系统 (L1GS) 处理过的场景,以及满足以下条件的任何 L1TP 场景: c2 global l4 landsat lt4 radiance
Datasets tagged lt4 in Earth Engine
[null,null,[],[[["\u003cp\u003eLandsat 4 TM Collection 2 provides Tier 1 and Tier 2 raw scene data, representing scaled and calibrated at-sensor radiance.\u003c/p\u003e\n"],["\u003cp\u003eTier 1 data has the highest quality and is suitable for time-series analysis, including Level-1 Precision Terrain (L1TP) processed data.\u003c/p\u003e\n"],["\u003cp\u003eTier 2 data comprises scenes not meeting Tier 1 criteria, such as Systematic terrain (L1GT) and Systematic (L1GS) processed scenes, and any lower quality L1TP scenes.\u003c/p\u003e\n"],["\u003cp\u003eBoth datasets offer global coverage and are tagged with Collection 2 (C2), Landsat 4 (L4), and radiance.\u003c/p\u003e\n"]]],[],null,["# Datasets tagged lt4 in Earth Engine\n\n-\n\n |-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n | [### USGS Landsat 4 TM Collection 2 Tier 1 Raw Scenes](/earth-engine/datasets/catalog/LANDSAT_LT04_C02_T1) |\n | Landsat 4 TM Collection 2 Tier 1 DN values, representing scaled, calibrated at-sensor radiance. Landsat scenes with the highest available data quality are placed into Tier 1 and are considered suitable for time-series processing analysis. Tier 1 includes Level-1 Precision Terrain (L1TP) processed data that ... |\n | [c2](/earth-engine/datasets/tags/c2) [global](/earth-engine/datasets/tags/global) [l4](/earth-engine/datasets/tags/l4) [landsat](/earth-engine/datasets/tags/landsat) [lt4](/earth-engine/datasets/tags/lt4) [radiance](/earth-engine/datasets/tags/radiance) |\n\n-\n\n |-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n | [### USGS Landsat 4 TM Collection 2 Tier 2 Raw Scenes](/earth-engine/datasets/catalog/LANDSAT_LT04_C02_T2) |\n | Landsat 4 TM Collection 2 Tier 2 DN values, representing scaled, calibrated at-sensor radiance. Scenes not meeting Tier 1 criteria during processing are assigned to Tier 2. This includes Systematic terrain (L1GT) and Systematic (L1GS) processed scenes, as well as any L1TP scenes that do ... |\n | [c2](/earth-engine/datasets/tags/c2) [global](/earth-engine/datasets/tags/global) [l4](/earth-engine/datasets/tags/l4) [landsat](/earth-engine/datasets/tags/landsat) [lt4](/earth-engine/datasets/tags/lt4) [radiance](/earth-engine/datasets/tags/radiance) |"]]