Antenna Array Auto-calibration applied to Synchronisation in Navigation Systems

Jesus Selva

Abstract:	A receiver equipped with an antenna array may mitigate the multipath eect on the synchronisation of the navigation signal, but the calibration errors in many cases spoil the performance of any estimator that relies on the angle-of-arrival parameterization. Usually this problem is tackled by estimating the array response along with the delays and amplitudes of the impinging waves. Nevertheless, the estimators based on this approach cannot distinguish short-delayed signals (less than 0.1 chips), which is an important scenario in navigation. In this paper, we present a model that includes the angle-independent calibration errors in the estimation. The associated Maximum Likelihood estimator behaves well for short-delayed signal replicas, and has almost the same performance as the Maximum Likelihood estimator in case of using a calibrated antenna array.
Published in:	Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001) September 11 - 14, 2001 Salt Palace Convention Center Salt Lake City, UT
Pages:	2177 - 2183
Cite this article:	Selva, Jesus, "Antenna Array Auto-calibration applied to Synchronisation in Navigation Systems," Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001), Salt Lake City, UT, September 2001, pp. 2177-2183.
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