基于接收信号DOA估计的GPS欺骗式干扰信号识别技术

The GPS deception jamming identification technology of based on the DOA of received signal

GPS欺骗式干扰信号在时频域内的特征可以与真实的GPS信号完全一致,但欺骗式干扰源在空间中的分布难以与GPS卫星的分布相同。通过分析GPS信号在空域中的特征,利用GPS信号的DOA与欺骗式干扰信号的DOA不同的特点,给出GPS欺骗式干扰信号识别方法。通过建立接收机快速定位模型,得到接收机的概略位置,并以此提高了识别欺骗式干扰信号的能力。

The characteristic which is the GPS deception jamming in time-frequency domain could be same with the real GPS signal. But the characteristic in space domain of deception jamming source is difficult same as the characteristic of real GPS satellite. The GPS deception jamming identification method has been put forward by using the difference between the DOA of deception jamming and real GPS signal. The fast positioning model has been put forward by using the DOA of GPS signal. Then the sketchy position of GPS receiver has been got, and the ability of the GPS deception jamming identification has been increased.