对GPS接收机的欺骗式干扰试验研究

GPS欺骗式干扰具有发射功率小,抗干扰难度大的特点,分为转发式干扰与产生式干扰。利用卫星信号模拟器产生包含错误导航信息的GPS民用C/A码欺骗信号,通过直接侵入和压制式干扰辅助两种方式进入接收机的捕获跟踪环路,对已定位的某款GPS接收机实施欺骗干扰。试验结果表明,直接侵入方式下,通过合理控制欺骗信号功率,接收机定位被扰乱,但定位结果并未被成功欺骗至预设位置;压制式干扰辅助方式下,接收机成功误定位于预设位置,验证了对GPS接收机进行欺骗式干扰的可行性。

Experiment Study of Spoofing Jamming on GPS Receiver

Power of spoofing jamming is lower but its spoofing ability is higher,and more difficult to be found. Spoofing jamming consists of repeater spoofing jamming and generation spoofing jamming. In the experiment,GPS spoofing signal generated by a certain satellite signal simulator contains false navigation message,and the GPS receiver has been successfully positioning. To intrude into the tracking loops of GPS receiver,directly invasion method and assist method with suppressing jamming are used respectively. The experiment results show that,in the method of directly invasion,positioning results are disturbed,but are not deceived to the desired position,and with the assist of suppressing jamming, positioning results are deceived to desired position,therefore,the feasibility of spoofing jamming on GPS receiver is confirmed.