GPS压制式干扰效能分析  

Effectiveness analysis of GPS blanket jamming

作　　者：王龙 贾小林[1,2] 毛悦 阮仁桂[1,2] 张奋 WANG Long;JIA Xiaoling;MAYue;RUAN Rengui;ZHANG Fen(Xi'an Research Institute of Surveying and Mapping,Xi'an 710054,China;State Key Laboratory of Geo-Information Engineering,Xi'an 710054,China)

机构地区：[1]西安测绘研究所,陕西西安710054 [2]地理信息工程国家重点实验室,陕西西安710054

出　　处：《测绘科学与工程》2021年第3期6-10,共5页Geomatics Science and Engineering

摘　　要：卫星导航系统优势明显,但也容易被干扰和欺骗,GPS干扰和抗干扰技术是其研究的热点。压制式干扰是典型的GPS干扰方式,本文分析了压制式干扰的原理,在考虑电磁衰减和天线特性的情况下,仿真分析了压制式干扰的作用范围。在分析压制式干扰过程的基础上,以干信比为评价参敎,仿真分析了压制式干扰的干扰效果。结果表明:1W的干扰信号在接收机未锁定时作用距离约为41km,在接收机锁定时作用距离约为18km,可对400km范围的GPS接收机产生干信比为20dB以上的干扰。Despite the advantages of satellite navigation system,it is prone to be jammed and spoofed.Blanket jamming is a typical mode of GPS jamming.In this paper,the principle of blanket jamming is analyzed and its jamming range jamming is simulated considering the electromagnetic attenuation and antenna characteristics.Based on the analysis of the jamming process,the jamming effect is simulated and analyzed with the interference-to-signal ratio(ISR)as the evaluation parameter.The results show that the interference range of the jamming signal with a power of 1 W is about 41 km when the receiver is unlocked,and 18 km when the receiver is locked,which can produce interference larger than 20 dB to GPS receivers within 400 km range.

关 键 词：GPS系统 压制式干扰 天线增益 干信比 干扰 

分 类 号：P228[天文地球—大地测量学与测量工程]