Bistatic Sensing with Reflected GPS Signals Observed with a Digital Beam-Steered Antenna Array

K. Stolk, A. Brown

Abstract:	Reflected GPS signals have applications for remote sensing including: earth mapping, ocean surface mapping, terrain modeling and digital mapping through application of bistatic signal processing techniques. Previous research in such uses of reflected GPS has been limited by the weak signal power of these bistatic GPS signal returns. This paper describes the design of a Digital Beam-Steered antenna array, which is used to increase the Signal/Noise ratio of the GPS bistatic signal returns to allow sensing of both specular and diffuse GPS signals. Flight test data is presented to demonstrate the performance improvements possible using Digital-Beam-Steering for improved GPS bistatic signal processing and remote sensing.
Published in:	Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003) September 9 - 12, 2003 Oregon Convention Center Portland, OR
Pages:	2720 - 2729
Cite this article:	Stolk, K., Brown, A., "Bistatic Sensing with Reflected GPS Signals Observed with a Digital Beam-Steered Antenna Array," Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003), Portland, OR, September 2003, pp. 2720-2729.
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