针对BD/GPS接收模块欺骗干扰的实验研究

Experimental Study on Spoofing Interference for BD/GPS Receiver Module

为研究欺骗BD/GPS接收机模块的条件,在室外较为开阔的地带搭建对BD/GPS接收模块进行欺骗干扰的环境。利用北斗信号模拟器发射伪北斗卫星信号,使接收模块计算出错误的当地时间并定位到错误的本地位置。实验从伪北斗信号的功率、数量、时间、位置4个方面,研究伪北斗卫星信号对BD/GPS接收模块对欺骗干扰效果。实验结果表明,要实现对BD/GPS模块的欺骗干扰至少需要6个伪卫星模拟信号,并且还要满足伪卫星信号的功率要比较大,伪当地时间与当地时间偏差不能太小,伪当地位置与当地位置偏差不能太大。实验直接说明了对BD/GPS接收模块造成欺骗的条件的严苛性。

In order to study the condition of deceiving BD/GPS receiver module, a deceiving jamming environment for spoofing test was built in a wide outdoor area. Using the Beidou signals simulator, the receiving module can calculate the wrong local time and locate the wrong local position by launching the pseudo-Beidou signals. In this experiment, the spoofing effect of pseudo-Beidou signals on BD/GPS receiving module is studied from four aspects: the power of pseudo-Beidou signals, the number of pseudo-Beidou signals, the pseudo-local time and the pseudo-local position set by the simulator. The experimental results show that spoofing BD/GPS module requires at least six pseudo-satellite signals, and the high power of pseudo satellite signals, the large deviation between pseudo local time and local time, the small deviation between pseudo local position and local position. This experiment directly illustrates the difficulty of spoofing BD/GPS receiver module using pseudo-satellites.