一种有效的MIMO雷达自适应脉冲压缩方法

An Efficient Approach for Adaptive Pulse Compression of MIMO Radar

发射信号的分离是MIMO雷达的一个重要环节,该文基于最小均方误差准则,提出了一种有效的MIMO雷达自适应脉冲压缩方法,从每个接收阵元接收到的信号中分别自适应地估计每个距离单元的脉冲压缩滤波器的权系数,从而获得期望的脉冲压缩性能,更好地完成发射波形的分离。该方法不仅能够抑制信号本身的距离旁瓣,降低信号之间的互相关电平,还对目标本身的多普勒频率具有很强的适应性。计算机仿真验证了该方法的有效性。

Extraction of transmitted waveforms is an important step for MIMO radar. Based on Minimum Mean Square Error （MMSE） formulation, this paper presents a efficient approach for adaptive pulse compression filter of MIMO radar, in which weight coefficients of the filter for each individual range cell is adaptively estimated from the received signal in order to extract the transmitted waveforms better. Compared with the standard mached filter, the proposed method can suppress range sidelobe level of a transmitted waveform, and lower correlated level between different waveforms, and the algorithm＇s tolerance to Doppler frequency is also determined. The computer simulation proves the efficiency of the algorithm.