本教程讲述了Landsat系列和使用图像所需的相关质量信息。
This chapter provides an overview of the Landsat collections and relevant quality information necessary for using the imagery.
Sentinel platform.
Sentinel-1¶
Sentinel-1 collection.
Short name: Sentinel-1 SAR GRD: C-band Synthetic Aperture Radar
- Sentinel-1 SAR GRD: C-band Synthetic Aperture Radar Ground Range Detected, log scaling
Sentinel-2¶
Sentinel-2 collection.
Short name: Sentinel-2 MSI: Multispectral Instrument
- Sentinel-2 MSI: MultiSpectral Instrument, Level-2A
- Sentinel-2 MSI: MultiSpectral Instrument, Level-1C
Specifications and Quality¶
The Sentinel-2 MSI user guide, user handbook, and technical guide provide overview of the products and algorithms within the platform.
Specific to the Level-2A processing, the Level-2 Algorithm Overview provides additional information about Scene Classification (SC) and Atmospheric Correction (S2A2).
The Sentinel-2 MSI data quality reports (DQRs) provide regular updates about the geometric and radiometric performance of the data products.
Scene Classification Band¶
Table 13 Sentinel-2 MSI Scene Classification Values ¶
Value | Classification |
0 | No Data |
1 | Saturated or Defective |
2 | Dark Area Pixels |
3 | Cloud Shadows |
4 | Vegetation |
5 | Not Vegetated |
6 | Water |
7 | Unclassified |
8 | Medium Probability Cloud |
9 | High Probability Cloud |
10 | Thin Cirrus |
11 | Snow |
Quality Bands¶
Table 14 Sentinel-2 MSI Quality Bands ¶
Band | Description |
MSK_CLDPRB | Cloud Probability Map |
MSK_SNWPRB | Snow Probability Map |
QA60 | Cloud Mask |
Table 15 Sentinel-2 MSI Cloud Mask Bit Index ¶
Bit | Attribute |
10 | Opaque Clouds |
11 | Cirrus Clouds |
Sentinel-3¶
Sentinel-3 collection.
Short name: Sentinel-3 OLCI EFR: Ocean and Land Color Instrument
- Sentinel-3 OLCI EFR: Ocean and Land Color Instrument Earth Observation Full Resolution
Sentinel-5P¶
Sentinel-5P collection.
Short name: Sentinel-5P TROPOMI: TROPOspheric Monitoring Instrument
- Sentinel-5P OFFL AER AI: Offline UV Aerosol Index
- Sentinel-5P OFFL CLOUD: Near Real-Time Cloud
- Sentinel-5P OFFL CO: Offline Carbon Monoxide
- Sentinel-5P OFFL HCHO: Offline Formaldehyde
- Sentinel-5P OFFL NO2: Offline Nitrogen Dioxide
- Sentinel-5P OFFL O3: Offline Ozone
- Sentinel-5P OFFL SO2: Offline Sulphur Dioxide
- Sentinel-5P OFFL CH4: Offline Methane
