一种极化MIMO雷达导引头关键技术研究

为提高雷达导引头的工作性能,提出一种新体制极化多输入多输出(MIMO)雷达导引头的概念,研究了该雷达导引头中的关键技术. 该雷达导引头采用双极化天线阵列,各个天线子阵发射正交频分线性调频信号;同时接收雷达回波信号的双极化分量,采用匹配滤波技术实现各个回波信号的有效分离;引入瞬态极化检测与识别技术,有效提高雷达导引头的抗干扰性能;采用单脉冲测角技术实现对目标的正确测角和跟踪. 理论分析和仿真结果表明,极化MIMO雷达导引头具有优良的电子战性能. 

Research on Key Techniques of a Polarized MIMO Radar Seeker

To improve the working performances of radar seeker, a new concept of polarized multiple input and multiple output (MIMO) radar seeker is proposed and its key technique is researched in this paper. The radar seeker employs a dual polarized antenna array, and each antenna sub-array transmits an orthogonal frequency division multiplexing linear frequency (OFDM-LFM) signal. Two polarized signal components of radar echoes are simultaneously received and each echo signal is effectively separated by matching filtering. The instantaneous polarization detection and recognition technique are used to improve the anti-jamming ability of radar seeker. The angle measurement and target tracking are realized by employing the monopulse technique. The results of theory analysis and simulation demonstrate that the polarized MIMO guidance radar seeker has good performance in electronic warfare.