: These files are officially generated and distributed by the U.S. Geological Survey (USGS) through platforms like EarthExplorer.
: It acts as a metadata header, containing parameters such as map projection, corner coordinates, and sensor-specific details (e.g., for the Enhanced Thematic Mapper Plus (ETM+) instrument). Download 07NDASAT txt
: These .txt files are used by GIS software (like ENVI or ERDAS IMAGINE) to correctly "place" the imagery on a global grid. : These files are officially generated and distributed
: Only download satellite metadata from authorized sites like USGS EarthExplorer or NASA Earthdata to ensure the integrity of the science data. : These
: Files from official sources like the USGS are highly reliable and essential for accurate radiometric calibration of satellite imagery.
This file is part of the legacy infrastructure for Earth observation data. While modern Landsat data is primarily distributed in GeoTIFF or Cloud Optimized GeoTIFF (COG) formats, "07NDASAT.txt" (or similar NDF-formatted files) was standard for earlier processing systems like NLAPS.