基于模糊函数的双基地雷达信号检测分析  

Bistatic Radar Signal Detection Analysis Based on Ambiguity Function

作　　者：李国君[1] 陈国良 唐小明[3] 

机构地区：[1]海军92941部队93分队 [2]海军92155部队 [3]海军航空工程学院

出　　处：《火控雷达技术》2011年第1期14-19,共6页Fire Control Radar Technology

基　　金：国家自然科学基金项目(60672139)

摘　　要：在双基地雷达系统中,基于纽曼-皮尔逊准则的似然比检测不但与发射信号的波形有关,而且还与双基地雷达系统的几何布站及目标的空间位置有关。首先以单基地雷达信号检测过程为基础,推导了双基地雷达系统的信号检测统计量模型,该模型是双基地雷达系统模糊函数的理论基础。然后给出了双基地雷达系统目标时延和多普勒频移参量的数学形式,与单基地雷达系统最大的不同是二者均为参变量的多维非线性函数。最后对发射信号为单个矩形脉冲和相参脉冲串的双基地雷达系统信号检测过程进行了仿真,仿真结果验证了该模型的正确性。In a bistatic radar system,likelihood ratio test based on Neyman-Pearson criteria is depended not only on transmit waveform,but also on geometry layout of radar stations and position of targets.Test statistic data model of a bistatic radar systems is derived on the basis of monostatic radar signal detection process,it is the theoretical foundation of the bistatic radar ambiguity function.Function form of targets time delay and Doppler shift of bistatic radar system is provided;great difference between these two parameters and those of the monostatic radar system is that both of them are multi-dimensional nonlinear functions of parametric variables.Finally,simulation of signal detection process of a bistatic radar with transmit signals of single rectangular pulse and coherent pulse-trains are performed,simulation results show that this model is correct.

关 键 词：双基地雷达系统 信号检测 检测统计量 模糊函数 

分 类 号：TN957[电子电信—信号与信息处理]