Precise, Accurate, and Multipath-Resistant Networked Round-Trip Carrier Phase RF Ranging

Bradley D. Farnsworth, E.J. Kreinar, David W.A. Taylor

Peer Reviewed

Abstract:	Reliable measurements of distance and velocity are a critical aid to integrated positioning and navigation systems. This work improves on a software-defined direct sequence spread spectrum (DSSS) distance measuring radio by introducing observations of the RF carrier phase offset that provides precise and accurate measurements of both distance and Doppler velocity in the presence of multipath on dynamic platforms. The measuring system provides millimeter-level ranging and centimeter per second-level velocity accuracy and precision at hundreds of measurements per second in challenging indoor and outdoor environments. Range and velocity measurements are demonstrated in a dual boot-mounted collaborative inertial navigation system which achieves high-precision relative and accurate dead-reckoning positioning in a GPS denied environment.
Published in:	Proceedings of the 2015 International Technical Meeting of The Institute of Navigation January 26 - 28, 2015 Laguna Cliffs Marriott Dana Point, California
Pages:	651 - 656
Cite this article:	Farnsworth, Bradley D., Kreinar, E.J., Taylor, David W.A., "Precise, Accurate, and Multipath-Resistant Networked Round-Trip Carrier Phase RF Ranging," Proceedings of the 2015 International Technical Meeting of The Institute of Navigation, Dana Point, California, January 2015, pp. 651-656.
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