GPS生成式欺骗干扰方法研究

Research of GPS generated spoofing method

生成式欺骗干扰是GPS欺骗技术的重要方式之一。以生成式欺骗干扰为研究内容,采用基于导航接收机实时接收真实GPS信号的方法来生成GPS欺骗信号,并计算了在信号同步阶段与非同步阶段生成欺骗信号所需的重要参数,包括信号发射功率、多普勒频率以及码相位等。此外,根据接收机在捕获和跟踪阶段的不同特点,提出两个在不同阶段实施欺骗干扰的策略,理论分析这两种策略的可行性,说明了这两种欺骗策略都能使欺骗信号成功进入接收机环路,引导接收机输出错误的信息。

GPS generated spoofing is an important GPS spoofing technology.It mainly research the generation of spoofing interference.The GPS spoofing signal is generated by real-time receiving GPS signal based on the navigation receiver,and the important parameters needed to generate the spoofing signal in the signal synchronization phase and the asynchronous phase are calculated,including signal transmission power,Doppler frequency and code phase.In addition,according to the different characteristics of the receiver in the acquisition and tracking phases,two strategies are proposed to implement cheating and jamming in different stages.Theoretical analysis of the feasibility of these two strategies show that both spoofing strategies can make the spoofing signal successfully enter the receiver loop,leading the receiver to output incorrect information.