基于秒脉冲时延检测的卫星导航抗欺骗干扰方法

Anti-Spoofing Jamming Method for Satellite Navigation Based on Second Pulse Delay Detection

为了解决卫星导航接收机在导航拒止环境下无法正常导航定位的问题,提出一种基于秒脉冲时延检测的卫星导航抗欺骗干扰方法。首先,在研究卫星导航欺骗干扰特性的基础上,确定欺骗干扰秒脉冲变化的特点。其次,提出一种针对卫星导航抗欺骗干扰方法,利用秒脉冲判断是否受到欺骗干扰,如是则标记剔除并进行重新捕获。最后,通过半物理仿真验证该方法的可行性。结果表明,该方法达到在卫星导航欺骗干扰环境中利用真实卫星信号定位的目的,可用于卫星导航抗欺骗干扰。

In order to solve the problem of satellite navigation receivers being unable to navigate and locate normally in navigation rejection environments,a satellite navigation anti-spoofing jamming method based on second pulse delay detection is proposed.Firstly,based on the study of the characteristics of satellite navigation deception jamming,the characteristics of the second pulse variation of spoofing interference are determined.Secondly,an anti-spoofing jamming method for satellite navigation is proposed.Second pulses are used to determine whether spoofing interference is received,and if so,the mark is removed and recaptured.Finally,the feasibility of this method is verified through semi-physical simulation.The results show that the proposed method can achieve the purpose of using real satellite signals to locate in the spoofing and jamming environment of satellite navigation,and can be applied to satellite navigation anti-spoofing jamming.