一种基于地表类型的地杂波快速仿真方法  

A Fast Simulation Method of Ground Clutter Based on Land Cover Type

作　　者：张莹 张晨晓 廖理 ZHANG Ying;ZHANG Chen-xiao;LIAO Li(AVIC Leihua Electronic Technology Research Institute,Wuxi 214063,China)

机构地区：[1]中国航空工业集团公司雷华电子技术研究所,江苏无锡214063

出　　处：《火力与指挥控制》2021年第5期174-179,共6页Fire Control & Command Control

基　　金：中国博士后科学基金资助项目(2018M642249)。

摘　　要：地杂波仿真技术对机载雷达的设计与研制有着重要影响。针对机载雷达地杂波仿真技术开展研究,提出了一种基于地表类型的地杂波快速仿真方法。该方法以数字地图和载机航线为两个重要输入,采用雷达波束照射区域的数字地图为有效先验地理环境信息进行仿真,提高了杂波仿真的逼真度;同时针对传统仿真方法中计算量较大的问题,优化了散射单元中天线功率增益的计算方法,减少了仿真时间。对所提方法进行了计算机仿真验证,结果表明,该方法能够仿真多种场景下与实测数据高度近似的地杂波。The technology of ground clutter simulation has an important influence on the design and development of airborne radar.This article has researched on the ground clutter simulation technology of airborne radar,and has proposed a fast simulation method of ground clutter based on land cover type.This method takes digital map and airplane route as two important inputs,and uses digital map of radar beam irradiation area as effective prior geographic environmental information to make simulation,which improves the fidelity of clutter simulation.At the same time,according to the problem of large amount of calculation in the traditional simulation method,the calculation method of the antenna power gain in the scattering unit is optimized and the simulation time is greatly reduced.The proposed method is verified by computer simulation,and the results show that this method can simulate the ground clutter which is highly similar to the measured data in many simulation scenes.

关 键 词：地杂波 机载雷达 地表类型 快速仿真 高逼真度 

分 类 号：TN958[电子电信—信号与信息处理]