机载PD雷达杂波功率谱快速重构方法  

Rapid Reconstruct Method of Airborne Pulse Doppler Radar Clutter Power Spectrum

作　　者：周云[1] 汪学刚[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《电子科技大学学报》2011年第2期180-184,共5页Journal of University of Electronic Science and Technology of China

基　　金：部级预研基金

摘　　要：分析了机载脉冲多普勒雷达杂波功率谱理论模型,根据杂波生成机理,利用距离折叠和多普勒折叠的效应,提出了一种快速重构多脉冲重复频率下雷达杂波功率谱的方法;利用一个预先计算的基准杂波功率分布图,通过距离域和多普勒域的两次级联重构,完成多重频下杂波功率谱的计算和仿真;分析了载机与雷达参数对功率谱重构的影响,减少了运算量,为功率谱实时计算提供了一种可行方法。The model of airborne pulse Doppler radar clutter power spectrum is analyzed. Based on the mechanism of clutter generation, range and Doppler folder is used to bring out a rapid method for reconstructing the clutter power spectrum, which has multi-pulse repeat frequency. A fiducial clutter power spectrum map is calculated in advance. The real spectrum can be obtained by two cascade reconstruction in range domain and Doppler domain. The effects generated by the change of the parameters of aircraft and radar are analyzed. The method can be used to calculate the real-time clutter power spectrum owing to its computation reduction.

关 键 词：多重频 功率谱 雷达杂波 重构 

分 类 号：TN958.2[电子电信—信号与信息处理]