CAJ | 학술논문

研究相控阵雷达的两级子阵级加权方法.其中第1级子阵级加权用于抑制差波束旁瓣,与Bayliss加权相比,降低了硬件成本与复杂度.第2级子阵级加权用于对和、差波束进行自适应干扰抑制.给出基于修正导向向量的方法,可有效抑制自适应方向图的旁瓣;且具有实现简单的优点,与基于预处理的方法相比有效降低了运算代价.采用修正导向向量与最优波束形成器的结合方法,提高了旁瓣抑制的灵活性;可在较好抑制旁瓣的同时,得到与最优波束形成器非常接近的SINR.仿真结果证明了所提出方法的有效性.
연구상공진뢰체적량급자진급가권방법.기중제1급자진급가권용우억제차파속방판,여Bayliss가권상비,강저료경건성본여복잡도.제2급자진급가권용우대화、차파속진행자괄응간우억제.급출기우수정도향향량적방법,가유효억제자괄응방향도적방판;차구유실현간단적우점,여기우예처리적방법상비유효강저료운산대개.채용수정도향향량여최우파속형성기적결합방법,제고료방판억제적령활성;가재교호억제방판적동시,득도여최우파속형성기비상접근적SINR.방진결과증명료소제출방법적유효성.
The two-stage subarray level weighting approach of phased array radar is investigated.The fist stage weighting is used to suppress sidelobe of difference pattern and it reduces hardware cost and complexity compared with the Bayliss weighting.The second stage weighting is used to realize adaptation of the sum and difference beam.The approach based on modified steering vector is proposed.It suppresses sidelobe of adaptive patterns effectively and can be easily realized.The combined approach of modified steering vector and optimum beamformer is presented,which improves the flexibility of sidelobe suppression.It can suppress sidelobe effectively,meanwhile preserve output SINR quite approximating to that of optimum beamformer.Simulation results demonstrate the validity of the proposed approach.