C/A Code Tracking and Acquisition with Interference Rejection using the Extended Kalman Filter

Ronald A. Iltis, Grant A. Hanson

Abstract:	This paper considers the problem of acquiring and tracking the GPS C/A code using the extended Kalman filter (EKF) in the presence of narrowband jamming. The EKF is a modification of a previously developed code tracking algorithm that jointly estimates signal amplitude, code delay, and interferer autoregressive parameters. Acquisition is performed by incrementing the code delay estimate until the threshold of a t-test is exceeded. Representative simulation results are included for stationary and swept tone jammers.
Published in:	Proceedings of the 1999 National Technical Meeting of The Institute of Navigation January 25 - 27, 1999 Catamaran Resort Hotel San Diego, CA
Pages:	881 - 889
Cite this article:	Iltis, Ronald A., Hanson, Grant A., "C/A Code Tracking and Acquisition with Interference Rejection using the Extended Kalman Filter," Proceedings of the 1999 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 1999, pp. 881-889.
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