基于零中频采集器的卫星欺骗式干扰检测研究  

Research on Satellite Deception Jamming Detection Based on Zero if Collector

作　　者：刘佩儒 苏新彦[1] 姚金杰[1] 于得水 LIU Peiru;SU Xinyan;YAO Jinjie;YU Deshui(Shanxi Provincial Key Laboratory of Information Detection and Processing,North University of China,Taiyuan 030051)

机构地区：[1]中北大学信息探测与处理山西省重点实验室,太原030051

出　　处：《舰船电子工程》2023年第12期132-137,共6页Ship Electronic Engineering

摘　　要：近年来,软件无线电(SDR)技术发展十分迅速,攻击者实施欺骗式干扰的成本越来越低,灵活性也越来越强,其可以利用简单的设备造成很大的影响。论文利用零中频采集器接收的未知信号作为被检数据,多峰检测算法可以检测到欺骗干扰信号,但也可能对信号中存在的多径信号造成误判,因此提出了基于多峰检测的扩展SQM技术。实验时使用生成式欺骗干扰设备,通过FMCOMMS3零中频射频接收机接收复合的卫星信号,复合信号经过器件中的LNA放大、混频器、TIA放大器等处理,给PC端传入基带信号,在Matlab中分析欺骗信号存在或不存在时两种检测算法性能的差异。实验结果表明:多峰检测可能对于信号中存在的多径信号造成误判,扩展SQM检测利用相关峰的对称性可以检测出误判的多径信号,弥补了多峰检测的不足。In recent years,software defined radio(SDR)technology has developed very rapidly.Attackers have become more and more flexible and cheaper to implement deception jamming,which can make a great impact by using simple devices.In this pa⁃per,the unknown signal received by the zero IF collector is used as the detected data,and the multimodal detection algorithm can detect the deceptive jamming signal,but it may also cause false judgment to the multipath signal in the signal.Therefore,the SQM technology based on multimodal detection is proposed.In the experiment,the generated deception jamming equipment is used to re⁃ceive the composite satellite signal through the FMCOMMS3 zero IF RF receiver.The composite signal is processed by LNA amplifi⁃cation,mixer,TIA amplifier,etc.in the device,and the baseband signal is transmitted to the PC terminal.The difference between the two detection performances is analyzed in Matlab when the deception signal exists or does not exist.The experimental results show that the multi peak detection may cause misjudgment for the multipath signal in the signal,and SQM detection can detect the misjudged multipath signal by using the symmetry of the correlation peak,making up for the deficiency of the multi peak detection.

关 键 词：卫星导航 欺骗式干扰 多峰检测 SQM 零中频接收机 

分 类 号：TN972[电子电信—信号与信息处理]