部分卫星欺骗对 G N SS 民用接收机的定位影响分析

摘要

欺骗干扰给卫星导航接收机带来巨大威胁 ,为了更好的研究抗欺骗技术 ,必须要对欺骗的机理进行深入的了解.本文假设了一种部分卫星欺骗模型 ,理论上分析了部分卫星伪距的改变对GNSS民用接收机的定位影响 ,并通过仿真证实了接收机的定位影响与所选择的欺骗卫星的空间几何构型息息相关 ,该研究对卫星导航接收机抗欺骗技术的研究具有一定的参考价值.%Nowadays ,Spoofing jamming is a huge threat to the GNSS receiver .In order to study the method of anti-spoofing ,it is necessary to make a thorough understanding of the mechanism of spoofing jamming .By modeling partial satellites spoofing ,the influence of positioning of GNSS receiver under partial satellites spoofing is analyzed in this paper .The positioning impact is closed to the partial satel-lites' space geometric is demonstrated by simulation .The results have a certain reference value for the research of the anti-spoofing technology of the receiver .