MIMO雷达双门限恒虚警检测

Constant false alarm rate detection of MIMO radar with double threshold

由于MIMO雷达的多通道特性,使得MIMO雷达各接收天线之间需要进行大量的数据传输。在MIMO雷达中应用双门限检测可以使数据传输量大大降低。本文在单元平均恒虚警检测器的基础上,提出了一种MIMO雷达双门限恒虚警检测器,设计了MIMO雷达双门限恒虚警检测器的结构,将其检测性能和单门限恒虚警检测器进行了对比,分析了MIMO雷达双门限检测器在多目标环境下的检测性能。仿真结果表明在MIMO雷达中应用双门限检测具有结构简单,数据传输量低等特点,在单目标和多目标环境中,双门限恒虚警检测器的检测性能均优于单门限恒虚警检测器。

The receiving antennas of Multiple Inputs Multiple Outputs（MIMO） radar need to transmit lots of data between each other because of the multiple channel property of MIMO radar.Besides,the technology of double threshold detection is quite mature and performs better than other detection methods.In order to reduce the data size,the double threshold detection method is applied to the MIMO radar.Base on the cell average CFAR detector,the double threshold detector for MIMO radar is proposed in this paper.Firstly, this detector＇ structure is presented.Then the detection performance of double threshold detector is compared to the single threshold one.Finally,the detection performance of the double threshold detector in multiple targets condition is indicated.The simulation results show that the double threshold detector performances better than the single threshold detector,especially in multiple targets environments. Besides,it has the advantage of simplicity,low data transmission rate between receiving antennas and so on.