集中式MIMO雷达阵列信号处理技术研究

A Study on Array Signal Processing Techniques for Coherent MIMO Radar

根据集中式多输入多输出雷达信号模型,给出了其阵列信号处理的处理流程。该文对频率编码正交信号的阵列信号处理方法进行了研究。基于该正交信号的信号模型,针对其互相关及自相关性能讨论了信号参数关系。进而研究了在处理中需关注的运动补偿、接收波束展宽、发射波束合成宽带等问题。文中分析了该正交信号阵列通道误差,给出了误差校准方法,并进行仿真验证,说明了方法的有效性。最后给出了详细的处理流程,并对主要的处理运算量进行了评估,对工程应用有指导意义。

According to the signal model of the coherent MIMO radar, its array signal processing flow is given in this paper. Based on this, OFDM signal processing techniques are studied. Aiming at the performance of cross-correlation and auto-correlation, signal parameters are discussed on the basis of OFDM signal model. Several problems in OFDM signal processing are studied, such as motion compensation,beam lobe broadening, transmit beam synthetic wideband,and so on. The amplitude error and the phase error between channels are analyzed. The method of channel calibration is given and is verified by simulation. Details in signal processing and assessment of the main computation load are given. It′s instructive in engineering application.