Dual-polarization GNSS Observations for Multipath Mitigation and Better High-precision Positioning

K. Palamartchouk, P.J. Clarke, S.J. Edwards, R. Tiwari

Peer Reviewed

Abstract:	We demonstrate the use of GNSS signal tracking with a dual-polarization antenna for evaluating the multipath condition of the survey location, and suggest using this information to improve the quality of positioning. As GNSS use right-hand circularly polarized signals (RHCP), changing partly into left-hand polarized (LHCP) upon undesirable reflection or scattering, measurements of the level of LHCP can be used as a proxy for the level of multipath contamination of the useful RHCP signal. This information can be used to apply realistic weights to the individual ranging measurements, leading to improved accuracy, precision, reliability, and availability of coordinate measurements. We discuss the procedure of obtaining a multipath indicator in an experiment reproducing a realistic high-precision surveying scenario and the potential directions of further research into dualpolarization GNSS technology.
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:	2772 - 2779
Cite this article:	Palamartchouk, K., Clarke, P.J., Edwards, S.J., Tiwari, R., "Dual-polarization GNSS Observations for Multipath Mitigation and Better High-precision Positioning," Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015), Tampa, Florida, September 2015, pp. 2772-2779.
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