Multipath Detection, Characterization and Mitigation in a Real-Time Receiver

Suman Ganguly, Nikhil Bhatia, YoonJae Lee, Slavisa Zigic, Brijesh Sirpatil, Michael Kirchner and Aleksandar Jovancevic

Abstract:	Multipath is the most prominent error source in a properly designed receiver and numerous techniques and approaches have been used and proposed for detection, characterization and mitigation of multipath under different situations. Each of these techniques has their advantages and drawbacks and none are suitable for every situation. Although, the waveforms for modernized signals with larger Gabor bandwidths will have reduced multipath, they will still be vulnerable to near range multipath. A large number of effective correlators are necessary for time domain detection and mitigation of multipath. These combined with spatial filtering can be used for spatial characterization of various multipath conditions. CRS has designed and currently is developing a realtime GPS receiver suitable for detection, characterization and mitigation of multipath under a wide variety of conditions. The receiver is suitable for C/A, P, M and other modernized waveforms. A synthesis of different approaches is used for optimized performance under diverse conditions. The receiver architecture is described.
Published in:	Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005) September 13 - 16, 2005 Long Beach Convention Center Long Beach, CA
Pages:	2614 - 2625
Cite this article:	Ganguly, Suman, Bhatia, Nikhil, Lee, YoonJae, Zigic, Slavisa, Sirpatil, Brijesh, Kirchner, Michael, Jovancevic, Aleksandar, "Multipath Detection, Characterization and Mitigation in a Real-Time Receiver," Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005), Long Beach, CA, September 2005, pp. 2614-2625.
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