和差四通道及辅助阵元联合自适应单脉冲方法

摘要

针对平面相控阵,提出了和差四通道及辅助阵元联合自适应单脉冲方法.新方法联合四通道和差波束输出与辅助阵元输出,经过自适应处理得到方位向及俯仰向自适应和差波束,利用主瓣区域高增益的差波束及辅助阵元联合对消主瓣干扰和副瓣干扰.理论分析和仿真结果均表明,新方法可有效抑制主瓣干扰和副瓣干扰,并具有良好的单脉冲测角性能,且无需对干扰空间角进行预先准确估计,利于工程实现.%For phase array radar, an adaptive monopulse algorithm combining four-channel sum-difference beam and auxiliary elements is presented.Adaptive processing is first conducted for (azimuth and elevation) sum-difference beams by combining four-channel sum-difference beam output and auxiliary elements output.The new algorithm utilizes both high gain difference beams and auxiliary elements for cancelling the mainlobe jamming and multiple sidelobe jamming.Theoretical analysis and simulation results indicate that the new algorithm can not only effectively suppress mainlobe jammers and sidelobe jammers, but also keep the good perfor-mance of monopulse angle estimation.Furthermore, it need not accurately estimate the position of jammers in advance, which is beneficial to the project.