Space-Time Equalization Techniques for New GNSS Signals

Pratibha B Anantharamu, Daniele Borio, Gerard Lachapelle

Abstract:	GNSS signal processing involving BOC modulations requires tracking techniques able to provide unambiguous code tracking with reduced losses in the signal quality. Space-time processing techniques have the potential of combining the advantages of temporal equalization, for unambiguous tracking, and spatial processing for improved signal quality. In this paper, the use of space-time processing for the tracking of new GNSS signals is considered. A new tracking technique is developed including temporal equalizers at each antenna output and a spatial filter combining the different correlator branches. The temporal equalizers are designed based on the minimum mean square error criterion whereas the spatial filter is characterized by a minimum variance distortionless response. The effectiveness of the proposed algorithm is validated using simulated and live GPS data obtained from antenna arrays with different structures and antenna spacing.
Published in:	Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011) September 20 - 23, 2011 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	1120 - 1128
Cite this article:	Anantharamu, Pratibha B, Borio, Daniele, Lachapelle, Gerard, "Space-Time Equalization Techniques for New GNSS Signals," Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011), Portland, OR, September 2011, pp. 1120-1128.
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