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selective availability - [GPS] The intentional degradation by the U.S. Department of Defense of the GPS signal for civilian receivers, which could cause errors in position of up to 100 meters. Selective availability (S/A) was removed from the civilian signal in May 2000. Since the lifting of S/A restrictions, position accuracy levels have improved to 20 meters or less.
[Category=Geospatial ]
Source: esri, 13 August 2012 09:12:46, http://support.esri.com/en/knowledgebase/GISDictionary/term/abbreviation
Data Quality Glossary. A free resource from GRC Data Intelligence. For comments, questions or feedback: dqglossary@grcdi.nl