Landsat 8 is the eighth satellite in the U.S. Landsat Program, successfully launched aboard an Atlas-V rocket from Vandenberg Air Force Base, California on February 11, 2013. Originally designated as the Landsat Data Continuity Mission (LDCM), the satellite carries two primary instruments: the Operational Land Imager (OLI) and the Thermal Infrared Sensor (TIRS).
Landsat 9 is the ninth satellite in the U.S. Landsat Program. On September 27, 2021, Landsat 9 was successfully launched from Vandenberg Space Force Base in California. The satellite will conduct Earth imaging every 16 days, operating with an 8-day temporal offset from Landsat 8 to enhance observational coverage.
The Operational Land Imager (OLI) onboard the satellite acquires data in 9 spectral bands with a spatial resolution of 30 meters, including one 15-meter panchromatic band, and provides a swath width of 185×185 km. The Thermal Infrared Sensor (TIRS) collects data in 2 separate thermal infrared bands at 100-meter resolution.This dataset comprises Collection 2 Level-1 (C2-L1) data products from Landsat OLI covering the China-Pakistan Economic Corridor section between Kashgar and Islamabad. All data were obtained from the official United States Geological Survey (USGS) website.
This dataset features a spatial resolution of 30 meters with cloud coverage limited to less than 20% per scene.
All data were obtained from the official United States Geological Survey (USGS) EarthExplorer platform (https://earthexplorer.usgs.gov/).
The Level-1 (L1) data products have undergone geometric correction processing. Compared to Collection 1 Level-1 data, Collection 2 Level-1 incorporates next-generation ground control points (GCPs Phase 2), which integrate control points from both Landsat 8 and Sentinel-2 satellites. This next-generation Collection 2 Level-1 dataset demonstrates significant improvements in both geometric rectification and radiometric calibration accuracy, with particularly notable enhancements in geometric correction precision.
The dataset contains only scenes with cloud cover below 20%, ensuring excellent data quality for analysis.
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CSTR:11738.11.ncdc.NIEER.db2350.2022
10.12072/ncdc.NIEER.db2350.2022