Compressive Sensing Based Direction-Of-Arrival Estimation In Mimo Radars In Presence Of Strong Jamming Via Blocking Matrix
2018 IEEE 10TH SENSOR ARRAY AND MULTICHANNEL SIGNAL PROCESSING WORKSHOP (SAM)(2018)
摘要
The performances of the traditional anti-jamming DOA methods for the colocated MIMO radar system will be seriously deteriorated when the number of the snapshots is small. In this paper, a compressive sensing (CS)-based anti-jamming DOA estimation with only a few snapshots is proposed. In the new DOA estimation, the information on the direction of strong jamming is used to construct a blocking matrix that can block the jamming component effectively. Hence, only the desired signal component is left after preprocessing with the blocking matrix. Then, the DOA estimation problem with a blocking matrix is formulated as a sparse recovery problem, and it is solved by the orthogonal matching pursuit (OMP) algorithm. We compare the proposed method with the traditional CS-based method and the traditional anti-jamming DOA methods. Numerical results demonstrate that the proposed method outperforms the traditional methods.
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关键词
MIMO radars,blocking matrix,traditional anti-jamming DOA methods,colocated MIMO radar system,snapshots,compressive sensing-based anti-jamming DOA estimation,strong jamming,jamming component,DOA estimation problem,traditional CS-based method,compressed sensing based direction-of-arrival estimation,desired signal component,orthogonal matching pursuit algorithm
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