GPS欺骗干扰过程研究

Study on GPS Spoofing Pattern Process

GPS欺骗干扰中欺骗概率较大的是生成式干扰,流程是信号同步以及欺骗策略实施,研究可以为抗欺骗干扰的研究提供参考。信号同步需要精确的模拟产生目标接收机所接收到的真实GPS卫星导航信号,即码相位、多普勒频率、载波相位各项参数能够和真实信号对齐,以及修改导航电文部分参数;此外,成功控制并牵引目标接收机还要符合的一定信号功率等条件。

Generated deception has a greater probability in GPS spoofing, which is divided into two parts,signal synchronization and the strategy of spoofing, also the study provide a reference for anti-jamming of GPS receiver. Signal synchronization requires precise simulation the real GPS satellite navigation signal when the target receiver receives. As like the code phase, Doppler frequency, carrier phase, and other parameters can be aligned with the real signal, and modifying some parameters of the navigation message; In addition, a certain signal power condition is required for successful control and traction of the target receiver.