机扫体制雷达超视距被动测向新方法研究  

A new passive OTH direction-finding method for mechanically scanned radar

作　　者：王西锋[1] 岳帅英[2] 顾毅君[2] 

机构地区：[1]91404部队 [2]中国船舶重工集团公司第七二四研究所

出　　处：《雷达与对抗》2015年第4期11-14,共4页Radar & ECM

摘　　要：针对机械扫描体制雷达被动超视距探测,在分析雷达截获信号全脉冲能量-空域分布特征的基础上提出两种新的测向方法——质心法和解方程法。研究了天线调制、被动扫描参数对测向精度的影响,并在相同条件下比较了这两种方法与传统方法的精度。仿真实验表明,所提两种方法比传统方法具有更高的测向精度,截获次数较少时使用解方程法,截获次数足够多时优先使用质心法。In view of the passive OTH detection for the mechanically scanned radar,based on the analysis of the full pulse energy-spatial distribution rule of passive radar signals,two new directionfinding methods are proposed,namely the centroid method and the method of solving equation. The effects of the antenna modulation and the passive scanning parameters on the direction-finding precision are studied,and the two methods and the conventional methods are compared in precision under the same condition. The simulation results indicate that the two methods are superior to the conventional methods in the direction-finding precision. The method of solving equation is used if the signals are intercepted less frequently,while the centroid method has priority if the signals are intercepted more frequently.

关 键 词：被动超视距雷达 高精度测向 方位-功率质心法 解方程法 

分 类 号：TN953.3[电子电信—信号与信息处理]