Direction of Arrival Estimation for Coherent Signals in GPS Receiver

Abstract:

A new direction of arrival (DOA) estimation method is proposed for coherent GPS signals, which applies to the GPS receiver with rich multipath, strong interference and low SNR. In this method, the interference is first suppressed by projecting the received signal onto the interference orthogonal subspace. Afterwards, the noise is eliminated by the spatial difference matrix. Then, the coherent GPS signals are decorrelated by the reconstructed Toeplitz matrix, and the DOA estimation is improved by a new constructed matrix. The proposed method can obtain more accurate DOA estimation for coherent GPS signals with strong interference and low SNR in the GPS receiver. Simulation results demonstrate the effectiveness and efficiency of the proposed method.

• Periodical: Applied Mechanics and Materials (Volumes 195-196)
• Pages: 109-114
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.195-196.109
• Online since: August 2012
• Authors: Yue Cui, Kai Hua Liu, Jun Feng Wang
• Keywords: Coherent Signals, Direction of Arrival (DOA) Estimation, GPS, Interference Suppression, Toeplitz Matrix

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