一种基于机相扫阵面雷达的重点目标方位角估计方法  

An Azimuth Estimation Method of Key Target Based on Machine Phase Scanning Array Radar

作　　者：完诚[1] 张磊[1] 钱乔龙 曹文杰 赵中兴[1] WAN Cheng;ZHANG Lei;QIAN Qiao-long;CAO Wen-jie;ZHAO Zhong-xing(The 723 Institute of CSIC,Yangzhou 225101,China)

机构地区：[1]中国船舶重工集团公司第七二三研究所,江苏扬州225101

出　　处：《舰船电子对抗》2021年第4期65-69,共5页Shipboard Electronic Countermeasure

摘　　要：提出了一种应用于机相扫阵面雷达的重点目标方位角估计方法。阵面雷达采用机相扫同时方位电扫的一维相控阵体制,利用数字多波束技术,可以在不同方位范围内形成多个接收波束以满足较大的监视区域。对重点目标的精细跟踪不仅需要考虑到雷达自身的旋转特性,还需要考虑到阵面雷达的波束形状在每个方位均不相同。因此,首先利用多项式拟合法对不同方位的各个波束精确建模,再针对雷达阵面旋转情况下应用幅度比较法估计重点目标的方位角。文末通过对不同信噪比目标的方位角仿真计算验证了该方法的可行性。This paper presents a method of azimuth estimation of key targets applied to machine-phase scanning array radar.Array radars adopt the one-dimensional phased array system with both machine phase scanning and azimuth electric scanning,can form multiple receiving beams in different azimuth ranges to meet a larger monitoring area by using digital multi-beam technology.The fine tracking to key targets needs to consider not only the rotation characteristics of the radar itself,but also the difference of the array radar’s beam shape in each azimuth.Therefore,firstly the polynomial fitting method is used to accurately model each beam in different azimuths,and then the amplitude comparison method is used to estimate the azimuth angle of key target in the case of radar array being rotating.At the end of the article,the feasibility of the method is verified by the azimuth simulation calculation of different signal to noise ratio(SNR)targets.

关 键 词：机相扫 多项式拟合 比幅法 方位角估计 

分 类 号：TN957.51[电子电信—信号与信息处理]