An Rls Based Adaptive Transversal Filter for Gps Narrowband Interference Cancellation
نویسندگان
چکیده
GPS signals are susceptible to interference levels above the inherent processing gain of the receiver. In this paper an innovative approach to cancel narrowband interference is presented. An Adaptive Temporal Filter (ATF) based on a Transversal form that pre-filters the interference before correlation is studied. The adaptive algorithm used to adjust the filter coefficients is the RLS algorithm. The RLS algorithm has faster convergence and is independent of the gradient step size when compared to LMS or NLMS algorithms. Simulation studies showed that the RLS based algorithm outperforms both LMS and NLMS in terms of convergence, RMS error and acquisition performance.
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