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当弹载导引头雷达检测运动目标时,由于海杂波谱严重扩展,和差波束空时自适应处理(SΔ-STAP)方法抑制海杂波能力非常有限,提出了一种基于低秩矩阵恢复的弹载导引头雷达SΔ-STAP方法。该方法基于低秩矩阵恢复理论建立弹载导引头雷达SΔ-STAP信号模型,首先采用SΔ-STAP方法预处理海杂波;然后利用鲁棒主成份分析(RPCA)技术从距离多普勒数据矩阵中分离出含有目标成分的稀疏矩阵;最后从距离多普勒谱图中有效地检测出运动目标。仿真实验验证了该方法在低信噪比情况下的有效性和鲁棒性。
When the missile seeker detects the moving target, due to the severe expansion of the sea clutter spectrum and the limited ability of the SΔ-STAP method to suppress the sea clutter, a method based on low rank matrix recovery Of the missile seeker radar SΔ-STAP method. In this method, the SΔ-STAP signal model of missile seeker radar is established based on the theory of low-rank matrix restoration. The SΔ-STAP method is used to preprocess the sea clutter. Then the robust principal component analysis (RPCA) The sparse matrix containing the target components is separated from the matrix. Finally, the moving target is detected effectively from the distance Doppler spectrum. Simulation results show the effectiveness and robustness of the proposed method at low SNR.