基于单站无源定位的抗自卫式欺骗干扰方法

Anconfronting self-screening deception jamming method based on single-observer passive location

欺骗干扰针对有源雷达的定位原理,通过对接收到的雷达信号进行延时、调制、转发,实现对距离、速度信息的欺骗.鉴于无源定位只利用一次来波的信息,可从欺骗信号中提取辐射源的信息来实现对干扰机的有效定位,提出了一种地面雷达对抗自卫式欺骗干扰的新方法.该方法通过高精度测量欺骗信号中多普勒频率变化率等参数,利用单站无源定位技术获得干扰源的真实位置信息,并通过跟踪滤波技术提高定位精度.仿真结果表明,在较高参数测量精度下该方法能有效对抗距离-速度欺骗干扰.

Deception Jamming implements the information deception of range and velocity by delaying, modulating and transmitting of the received radar signals, in terms of the location principles of active radars. In consideration of the fact that passive location utilizes the information of incoming radiation wave only for one time and realizes the effective location of jammer by extracting the information of radiation source from the deception signals, this paper puts forward a new method for the ground radars confronting the self-screening deception jamming. This method obtains the real position information by employing the single-observer passive location techniques and measuring Doppler frequency rate-of-change and other parameters of the deception signals with high precision, and improves the location precision by using the tracking filtering techniques. Simulation results show that this proposed method is capable of confronting effectively the range-velocity deception jamming in the case of higher measuring precision of parameters.