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Abstract
GPS in a Post-SA World
Track: Location Services
Author(s): Aaron Webb
The removal of Selective Availability (SA) by the U.S. government is a significant event in global positioning system (GPS) history, opening up opportunities for many in both the geospatial community and the broader consumer market as a whole. Its removal has made GPS more accurate and accessible, encouraging the development of numerous applications that make use of location within their function. With the removal of SA come numerous questions related to the levels of accuracy that can now be achieved and the continued need for differential correction techniques, both postprocessing and real time. This paper investigates and answers many of those questions related to the removal of SA and the application of GPS in this post-SA world.
Aaron Webb
Trimble
Mapping & GIS Division
7403 Church Ranch Blvd, Suite 100
Westminster , CO 80021
USA
Phone: (720) 887 6100
Fax: (720) 887 6101