Simultaneous Null and Mainlobe Widening for Jamming Suppression in Attitude High-Dynamic GNSS

Dan Lu, Sujiao Li, Renbiao Wu

Abstract:	When the satellite navigation receiver carrier is in the situation of attitude high dynamic, directions of arrival (DOAs) of the signal and interference will change rapidly over time, resulting in conventional adaptive anti-jamming algorithms invalid. This paper proposes an algorithm which widen null and main lobe simultaneously for attitude high dynamic interference suppression in Global Navigation Satellite System (GNSS). Firstly, it estimates the DOA of the satellite signal. Then uses the covariance matrix taper (CMT) method and derivative constraint respectively to widen null and main lobe. The new method does not need to know the DOAs of the interference and the satellite signal in advance, which can produce gain in the direction of signal, thereby further improving the anti-jamming performance. Finally, the simulation results demonstrate that the new method can widen the interference null and the main beam effectively, achieving the correct acquisition of the satellite signal in attitude high-dynamic GNSS.
Published in:	Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015) September 14 - 18, 2015 Tampa Convention Center Tampa, Florida
Pages:	1713 - 1719
Cite this article:	Lu, Dan, Li, Sujiao, Wu, Renbiao, "Simultaneous Null and Mainlobe Widening for Jamming Suppression in Attitude High-Dynamic GNSS," Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015), Tampa, Florida, September 2015, pp. 1713-1719.
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