| Citation: | ZHOU B L，LI R F，ZENG L，et al. A sparse estimation method for radar target direction with sliding-window subarray configuration in mainlobe jamming[J]. Journal of Beijing University of Aeronautics and Astronautics，2023，49（7）：1623-1629 （in Chinese） doi: 10.13700/j.bh.1001-5965.2021.0552
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The suppression of mainlobe jamming (MLJ) is a hard task and an open problem in the radar field. This paper considers the problem of radar target direction estimation in MLJ. Hence, we propose a sparse estimation method for radar target direction with sliding-window subarray configuration in MLJ. MLJ is suppressed in each subarray with the proposed method, and the angle atom is constructed according to the phase relationship between the sliding-window subarrays. Finally, the target direction can be estimated with the orthogonal matching pursuit (OMP) algorithm. When the target input signal-to-noise ratio is 20 dB and the angle between the target and MLJ is 1/2 3 dB beam width, the target angle estimation error is smaller than 1/10 3 dB beam width. The accuracy of the angle estimation is well kept and the MLJ can be cancelled without any prior information.
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