Interference Resistance Improvement Through a

Jonathan Buquet, Alain Soulier

Abstract:	Considering the vulnerability of Satellite Navigation Systems to in-band interference, the article presents the interference resistance improvement by using both GPS & GLONASS constellations. A theoretical model is described in order to evaluate the respective interference resistance of GPS & GLONASS receivers. Two modes are considered : the acquisition mode and the tracking mode. To validate the theoretical models, tests were performed on real signals (jamming signal introduced in conduit mode) on a ASHTECH MIRA24 GPS/GLONASS receiver. The tests bed is described, the results are presented and compared to the theoretical results. The interference resistance improvement of a C/A GPS/GLONASS receiver is respectively 6 dB for the acquisition mode and 2.4 dB for the tracking mode. As a result of this study, two satellite navigation systems with different carrier frequencies and access techniques (CDMA vs. FDMA) is clearly an advantage for interference mitigation.
Published in:	Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999) September 14 - 17, 1999 Nashville, TN
Pages:	101 - 106
Cite this article:	Buquet, Jonathan, Soulier, Alain, "Interference Resistance Improvement Through a," Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999), Nashville, TN, September 1999, pp. 101-106.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In