CAJ | 학술논문

首先介绍多输入多输出体制雷达的地杂波模型,采用映像法将地面划分为杂波散射单元并计算各单元的回波信号,后将各单元回波信号采用矢量相加求得相干视频信号;然后给出了机载多输入多输出雷达地杂波回波信号分别经过波束合成和匹配滤波合成后杂波功率谱的峰值,并分析其经不同处理而获得不同增益值的原因.同时,对多天线接收和存在干扰条件下的地杂波功率谱进行了仿真,仿真结果表明计算的正确性.
수선개소다수입다수출체제뢰체적지잡파모형,채용영상법장지면화분위잡파산사단원병계산각단원적회파신호,후장각단원회파신호채용시량상가구득상간시빈신호;연후급출료궤재다수입다수출뢰체지잡파회파신호분별경과파속합성화필배려파합성후잡파공솔보적봉치,병분석기경불동처리이획득불동증익치적원인.동시,대다천선접수화존재간우조건하적지잡파공솔보진행료방진,방진결과표명계산적정학성.
The ground clutter model and the computation of echo from a clutter cell based on coherent video signal method for airborne multiple-input multiple-output(MIMO) radar is studied first in this paper. Then, the peak value of ground clutter power spectral density(PSD) after digital beam forming(DBF) and matching is presented, and the reason that the gain value is different in each processing is analyzed. Moreover, the ground clutter PSD simulation under condition of multi-antenna receive with interference is given. The simulation results verify the effectiveness of the method.