极化域空域联合匹配波束形成技术研究

摘要

针对普通相控阵雷达可能因存在天线极化失配而导致对接收信号的损失问题,提出采用极化阵列天线体制的办法。研究了完全极化情况下极化阵列雷达的波束形成技术。提出了极化域-空域联合匹配滤波方法,推导了极化阵列波束形成的具体解析表达式,并与普通相控阵雷达进行比较,得到了极化阵列雷达具备更强的稳健性：极化阵列雷达不仅能控制波束的指向,而且,还能调整极化与接收信号在极化域空域上联合匹配,增强目标信号,提高信噪比。例分析和仿真结果验证了理论模型正确性。%Polarization phased array antenna is adopted to overcome the loss of the received signal because common phased array exists antenna mismatch.Beamformer of polarization phased array radar in the case of completely polarized is analyzed.Polarized and spatial domains joint matching filter is proposed.The beamforming formula of polarization phased array is calculated.Polarization phased array radar is better than common phased array radar,because it controls the main beam direction,low side beam,and polarization information as well.It compensates the echo signal in polarization and increases the target signal,enhances signal to noise ratio.The example analysis and simulation results show the correctness of the theory model.