主动雷达导引头多路径效应的数字仿真  

Numerical Simulation of Multipath Effect of Active Radar Seeker

作　　者：段世忠[1] 周荫清[1] 张孟[1] 王祖林[1] 

机构地区：[1]北京航空航天大学电子工程系

出　　处：《北京航空航天大学学报》2002年第4期447-450,共4页Journal of Beijing University of Aeronautics and Astronautics

摘　　要：对于平整和起伏的地面或海面 ,分别给出了一种基于多反射点复杂目标的多路径回波的时域复包络波形数字仿真模型 .采用随机分形插值算法利用地形实测数据对复杂的起伏地面和海面进行三维地形建模 .对不同粗糙度地面上的低空目标的多路径回波进行了仿真计算 ,并使用主动雷达导引头数字仿真模型进行了多路径干扰环境下对低空目标的跟踪实验 .仿真实验表明 。A time domain model for complex envelope simulation of multipath effect is presented based on multi-reflect-point target model. The model was used to calculate return waves of flat and fluctuant surfaces of land or sea. The 3D surface model of land and sea was built by the random fractal interpolation method with measured data. Signals from various roughness surfaces were computed. Simulation of low altitude target track under multipath effect environment was conducted with the active seeker model. The results indicated that multipath effect can bring large error for low altitude target tracking.

关 键 词：多路径效应 数字仿真 雷达导引头 随机分形地形 目标跟踪 

分 类 号：TN953[电子电信—信号与信息处理]