Practical Measurements of Radio Frequency Interference to GPS Receivers and an Assessment of Interference Levels by Flight Trials in the European Regions

Paul Nisner and John Owen

Abstract:	Augmented GPS satisfies the accuracy requirements of the Required Navigation Performance (RNP), for many of the phases of flight, particularly en-route navigation. However it has been previously shown (Ref 1) that Radio Frequency Interference (RFI) poses a significant threat to GPS and all other GNSS currently under consideration, requiring practical spectrum management policy issues to be addressed. This paper describes the work which was undertaken to determine the effects of RFI on GPS and measure the spectrum content within Europe. The work was carried out by the Defence Research Agency (DRA) for the CAAs National Air Traffic Services (NATS), as part of a study of global navigation satellite systems (GNSS).
Published in:	Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995) September 12 - 15, 1995 Palm Springs, CA
Pages:	1373 - 1382
Cite this article:	Nisner, Paul, Owen, John, "Practical Measurements of Radio Frequency Interference to GPS Receivers and an Assessment of Interference Levels by Flight Trials in the European Regions," Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995), Palm Springs, CA, September 1995, pp. 1373-1382.
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