Simulation Study of UWB-OFDM SAR for Dead-Reckoning Navigation

Kyle Kauffman, Yu Morton, John Raquet, Dmitriy Garmatyuk

Abstract:	There is a great need to develop non-GPS based methods for position and navigation in situations where GPS is not available. This paper explores the usage of an Ultra-Wideband Orthogonal Frequency Division Multiplexed (UWB-OFDM) sensor for dead-reckoning navigation. A single aerial vehicle (AV) travels along a fixed axis recording raw Synthetic Aperture Radar (SAR) data in a stripmap configuration, with persistent scatterers located along the axis of travel. Our customized search algorithm is combined with the Levenberg-Marquardt Algorithm (LMA) to track the AVs position as it flies along its axis of travel. We perform a series of simulations to find a baseline performance for the achievable position accuracy using an UWB-OFDM sensor to locate the AV in real time. The accuracy of the calculated position is analyzed as functions of scatterer availability, locations, and received SNR. Keywords-UWB radar; OFDM; dead reckoning; navigation; synthetic aperture radar.
Published in:	Proceedings of the 2010 International Technical Meeting of The Institute of Navigation January 25 - 27, 2010 Catamaran Resort Hotel San Diego, CA
Pages:	153 - 160
Cite this article:	Kauffman, Kyle, Morton, Yu, Raquet, John, Garmatyuk, Dmitriy, "Simulation Study of UWB-OFDM SAR for Dead-Reckoning Navigation," Proceedings of the 2010 International Technical Meeting of The Institute of Navigation, San Diego, CA, January 2010, pp. 153-160.
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