Benefits of the free and open Landsat data policy 论文
2019Remote Sensing of Environment引用 462
Remote Sensing and LiDAR ApplicationsGeochemistry and Geologic MappingAtmospheric and Environmental Gas Dynamics
摘要
The United States (U.S.) federal government provides imagery obtained by federally funded Earth Observation satellites typically at no cost. For many years Landsat was an exception to this trend, until 2008 when the United States Geological Survey (USGS) made Landsat data accessible via the internet for free. Substantial increases in downloads of Landsat imagery ensued and led to a rapid