一种针对用户GNSS时钟的转发式欺骗方法

全球卫星导航系统(Global Navigation Satellite System,GNSS)转发式欺骗干扰具有系统搭建容易、干扰实施方便、成本低等优点，目前已成为一种重要的GNSS欺骗方式。针对多峰值抗转发欺骗干扰检测算法，提出一种针对目标接收机GNSS时钟的转发式欺骗干扰方法。相比于传统转发式欺骗的各通道卫星信号时延一致的特点，该方法根据待欺骗接收机和转发式欺骗源的位置计算各卫星通道转发时延，使待欺骗目标接收到的GNSS欺骗信号的时延为伪码周期整数倍，并随时间自适应动态调整转发时延，使得欺骗检测失效，进一步欺骗静态目标接收机的GNSS时钟。模拟实验和仿真实验验证了该转发式欺骗方法的有效性。

A Repeater Spoofing Method for GNSS Clock of Receiver

Due to the advantages of easy system construction,convenient interference implementation,and low cost,Global Navigation Satellite System(GNSS) repeater spoofing interference has become an important interference method at present.For the multi-peak spoofing interference detection algorithm,a repeater spoofing method for the GNSS clock of target receiver is proposed.Compared with the characteristics of consistent signal delay of each satellite channel in traditional repeater spoofing,this method calculates the repeater delay of each satellite channel by position of repeater deception source and target receiver,so that the repeater delay of the GNSS spoofing signal received by the target receiver is an integer multiple of the pseudo code period,and the forwarding delay is adaptively and dynamically adjusted with time,which makes the spoofing detection invalid,and deceives the GNSS clock of the static target receiver.Through simulation experiments and simulation experiments,the effectiveness of the forwarding deception method is verified.