Approaching Millimeter Accuracy of GNSS Positioning in Real Time with Large Impedance Ground Plane Antennas

D. Tatarnikov and A. Astakhov

Abstract:	A GNSS receiving antenna system employing a large impedance ground plane has been developed and built. The antenna system provides with a homogeneous pattern in the top semi-sphere down to 10-12 degrees elevation. Signal-to-noise ratio improvement towards low elevated satellites is about 3-5dB against commonly adopted values. Achieved multipath suppression is 20dB at 12 degrees elevation and 45dB at nadir. Multipath error to real time positioning is shown to fall below phase noise of the receiver. By filtering out said noise the remaining error is estimated to be about +/- 2mm in vertical coordinate.
Published in:	Proceedings of the 2014 International Technical Meeting of The Institute of Navigation January 27 - 29, 2014 Catamaran Resort Hotel San Diego, California
Pages:	844 - 848
Cite this article:	Tatarnikov, D., Astakhov, A., "Approaching Millimeter Accuracy of GNSS Positioning in Real Time with Large Impedance Ground Plane Antennas," Proceedings of the 2014 International Technical Meeting of The Institute of Navigation, San Diego, California, January 2014, pp. 844-848.
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