RF干扰对GPS接收机的影响

The Effect of RF Jam to GPS Receiving Machine

GPS接收机作为全球卫星导航系统的用户终端,广泛应用于军用及民用领域.但是作为系统的下行链路,GPS接收机很容易受到干扰,尤其是人为干扰,其中RF干扰是较为普遍的人为干扰.为了探讨RF干扰对GPS接收机的影响,分析了等效载波噪声功率谱密度比与干信比之间的关系,以及干扰功率和有效干扰范围的关系.

GPS receiving machine is the End-User of Global Positioning system which is widely used in the field of army and civil.Because of it is the downriver link,so GPS receiving machine is easy jammed,especially by artificial jam,and RF jam is the kind of universal artificial jam.In order to discuss the effect of RF jam to GPS receiving machine,the paper analyses the relationship of（C/N0）eq and J/S as well as the relationship of jamming power and available jamming distance.