GIS Contributor
Remote-Sensing Technologies
GIS Contributor
Remotely-sensed imagery from aircraft and satellites represent one of the fastest-growing sources for raster GIS data.
What does it take to support a GIS?
GIS Contributor
A systems analyst discusses what it takes for the information technology group for a local government to support GIS operations.
U.S. discontinues selective availability of GPS to public
GIS Contributor
On May 1, 2000, the U.S. government discontinued "selective availability", which was the intentional degradation of GPS signals.