Title :
Interim report on the geographic dependency and latitude effects study [GPS system]
Author :
Beard, R. ; Gifford, A. ; Stebbins, S. ; Rasmussen, S. ; Batholomew, T.
Author_Institution :
US Naval Res. Lab., Washington, DC, USA
Abstract :
The effects of the various Global Positioning System (GPS) system error sources are being investigated for their influence on time dissemination. Data are being gathered from a variety of tracking and timing centers to attempt to identify and quantify the errors and their sources. The known influences of GPS satellite position error, propagation effects, and the ability to maintain time at remote sites are being investigated. Trends in the error propagation of these different effects will be determined, and limits imposed on capability and possible geographic dependency identified. Interim results and tentative conclusions on these efforts are presented
Keywords :
errors; radionavigation; radiowave propagation; satellite relay systems; tropospheric electromagnetic wave propagation; GPS satellite position error; GPS system; Global Positioning System; clock error; error propagation; error sources; geographic dependency; instrumentation errors; latitude effects; propagation effects; time dissemination; Control systems; Cryptography; Global Positioning System; Laboratories; Observatories; Protection; Satellite broadcasting; System testing; Time dissemination; Timing;
Conference_Titel :
Frequency Control, 1991., Proceedings of the 45th Annual Symposium on
Conference_Location :
Los Angeles, CA
Print_ISBN :
0-87942-658-6
DOI :
10.1109/FREQ.1991.145958
