基于GNSS信号的多通道无源雷达系统分辨率分析  

Resolution Properties of Multi-channel Passive Radar System Based on GNSS Signals

作　　者：郑岱阳 李焕 张磊 戚仁涛 

机构地区：[1]合肥工业大学光电技术研究院,安徽合肥230009 [2]北京第8中学,北京100033

出　　处：《电子科技》2017年第12期1-3,8,共4页Electronic Science and Technology

基　　金：国家自然科学基金青年科学基金(61401140)

摘　　要：针对难以定量分析基于GNSS信号的多通道无源雷达系统成像分辨率的问题,以多发多收SAR系统的模糊函数为基础,研究了基于GNSS信号的多发多收无源雷达系统的分辨率。根据GNSS各卫星信号的非相干性,采用线性非相干方式对多颗卫星的回波信号进行融合处理,获得了该系统的模糊函数。引入模糊函数3 d B投影面积作为衡量系统分辨率的定量指标,通过仿真分析了地面接收站位置对成像分辨率的影响,为以GNSS卫星为照射源的地面无源成像系统的接收站布站构型提供了参考。Aiming at the quantitative analysis of the imaging resolution for a passive radar system with multipleGNSS transmitters and multiple fixed ground receivers,the ambiguity function of multi channel passive SARsystemintroduced,then the resolution properties of tlie pasive radar system witli GNSS satellite as the illumination is ana-lyzed .The 3 dB projection area of the ambiguity function is used as the quantitative index to evaluate the imaging res-oliution. Some simulation experiment is implemented to analyze the effect of the receivthe system,which is very important to optimize the resolution of the system.

关 键 词：CDSS信号 多站 模糊函数 分辨率 

分 类 号：TD958.97[矿业工程—选矿]