Interference to DOD Use of GFS

Ricardo Layton, Steve Lazar, Jim McKay, and Srini Raghaven

Abstract:	The GPS Joint Program Office (JPO) is in- creasingly concerned about the effects of elec- tromagnetic interference (EMI) on GPS re- ceivers. This focus on “unintentional jam- ming” has evolved primarily for two reasons: 1) Field reports of degraded GPS service and 2) Activity at national and international levels to allocate L-band frequency spectrum for new and expanded services. Instances of degraded serv- ice likely are due to the burgeoning use of GPS and other services, in both the civilian and military sectors, which inevitably brings GPS receivers in proximity to previously un- anticipated sources of interference. The im- portance of maintaining navigation service has compelled the GPS Program Office to perform interference studies and to become involved in the frequency coordination process. Included in this paper are studies on the interference effects of a mobile satellite communication system, a wind profiler radar, and a television transmission system. Both L1 and LZ interfer- ence effects, as well as off-tune and pulsed in- terfering signals are considered.
Published in:	Proceedings of the 1995 National Technical Meeting of The Institute of Navigation January 18 - 20, 1995 Disneyland Hotel Anaheim, CA
Pages:	105 - 112
Cite this article:	Layton, Ricardo, Lazar, Steve, McKay, Jim, Raghaven, Srini, "Interference to DOD Use of GFS," Proceedings of the 1995 National Technical Meeting of The Institute of Navigation, Anaheim, CA, January 1995, pp. 105-112.
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