预警雷达信号模拟的研究  

A Study on Early-warning Radar Signal Simulation

作　　者：叶红霞[1] 汪文秉[2] 金亚秋[1] 

机构地区：[1]复旦大学波散射与遥感信息教育部重点实验室,上海200433 [2]西安交通大学微波工程与光通信研究所,西安710049

出　　处：《现代雷达》2004年第6期1-3,7,共4页Modern Radar

基　　金：国家重点基础研究计划 2 0 0 1CB3 0 940 5资助

摘　　要：用计算机实现预警雷达信号的相干视频 (包含杂波和噪声 )模拟 ,复现了信号发射、在空间的传播、经散射体反射以及在接收机内进行处理的全过程。目标的RCS用OpenGL可视化计算 ,Swerling模型反映其动态特性。地表杂波用后向映射法模拟 ,计及与入射电磁波擦地角的关系 ,其动态特性用正态分布的随机数表示。根据天线的噪声系数 ,用正态分布模拟噪声。The correlated video signal of airborne early warning radar is studied in this paper. Radar signal radiation, propagation and scattering, and its processing in the radar receiver are simulated. The RCS of scattering object is computed by using OpenGL software package and its dynamic characteristic is simulated with the Swerling model. The land clutters are simulated by using the backward mapping method and its functional dependence on the incident grazing angle etc. is also accounted for. The dynamic characteristics of land clutters and echo noise are simulated by using random numbers described by the normal distribution.

关 键 词：机载预警雷达 脉冲多普勒 地表杂波 雷达散射截面积 

分 类 号：TN959[电子电信—信号与信息处理]