An Evaluation of INU and DGPS Measurement Fusion for Singe Pass and Repeat Pass Interferometric Mapping Radars

R. Muellerschoen and S. Hensley

Abstract:	The rapid advance of GPS and INU systems that provide highly accurate position, velocity and attitude data has enabled a number of radar mapping systems to produce high quality commercial and scientific mapping products. The GeoSAR interferometric mapping radar developed at JPL, now owned and operated by Earthdata International and a new system, UAVSAR, currently under development at JPL for making robust repeat pass airborne radar interferometric deformation mapping, both rely heavily on DGPS and INU systems. Blending of INU and DGPS measurements is required to achieve desired position accuracy at the time scales of the inter pulse intervals (millisecond), of the length of the synthetic aperture, (several seconds), and of the length of the radar data take (several minutes). In this paper we evaluate INU and DGPS measurement fusion techniques to optimize performance for single pass and repeat pass interferometric mapping radars.
Published in:	Proceedings of the 2006 National Technical Meeting of The Institute of Navigation January 18 - 20, 2006 Hyatt Regency Hotel Monterey, CA
Pages:	1094 - 1104
Cite this article:	Muellerschoen, R., Hensley, S., "An Evaluation of INU and DGPS Measurement Fusion for Singe Pass and Repeat Pass Interferometric Mapping Radars," Proceedings of the 2006 National Technical Meeting of The Institute of Navigation, Monterey, CA, January 2006, pp. 1094-1104.
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