基于双天线谱估计的GNSS干扰源测向定位  

Direction finding and localization of GNSS interference sources based on dual-antenna spectrum estimation

作　　者：胡铁乔[1] 梁永超 HU Tieqiao;LIANG Yongchao(Tianjin Key Laboratory for Advanced Signal Processing,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学天津市智能信号与图像处理重点实验室,天津300300

出　　处：《导航定位学报》2025年第2期118-125,共8页Journal of Navigation and Positioning

基　　金：国家自然科学基金委员会-中国民用航空局民航联合研究基金项目(U2133204);中国民航大学国家自然科学基金配套专项(122022PT01)。

摘　　要：针对全球卫星导航系统(GNSS)受到干扰会对民航飞行导航造成严重的影响,且传统监测设备体积大、干扰源定位过程繁琐等问题,对课题组设计的无线电采集设备进行二次开发,设计实现GNSS干扰源实时定位系统:系统由采集处理端和监测端组成,具有采集处理模式、高速数据传输模式、回溯模式和空闲模式;采集处理模式和回溯模式包括测向算法模块,用于解算干扰来向;根据测向的结果,使用交叉定位法对干扰源实现定位,并将定位结果显示在上位机定位界面的地图中。实验结果表明,通过对全球定位系统(GPS)的L1频段连续波干扰信号和周期脉冲干扰信号分别测向定位测试,系统定位成功率可为96.43%,定位最大误差均值在13.64 m,验证了该系统的实时性和可靠性。Aiming at the problems of the serious impact of interference on civil aviation flight navigation caused by global satellite navigation system(GNSS),and the large volume and tedious process of interference source location of traditional monitoring equipment,the paper carried out a secondary development of the radio acquisition equipment designed by the research group to create a real-time GNSS interference source localization system:the system consists of acquisition and processing terminal and monitoring terminal,which has featuring acquisition and processing mode,high-speed data transmission mode,retrospective mode and idle mode;the acquisition and processing mode and the retrospective mode include direction finding algorithm module for resolving the direction of interference;according to the result of direction finding,a cross-location method was employed to pinpoint the interference source,and the location results were displayed in the map of the positioning interface of the host computer.Experimental results showed that through direction-finding and localization tests on continuous wave interference signals and periodic pulse interference signals in the L1 band of the global positioning system(GPS),the success rate of the proposed system could be 96.43%with an average maximum localization error of 13.64 meters,validating the real-time performance and reliability of the system.

关 键 词：ZYNQ-7020芯片 AD9361射频收发芯片 全球卫星导航系统(GNSS) 交叉定位法 阵列天线 

分 类 号：P228[天文地球—大地测量学与测量工程] TN98[天文地球—测绘科学与技术]