雷达导引头对拖曳式诱饵干扰的检测和识别新方法

有源拖曳式雷达诱饵能够实现角度欺骗、距离欺骗、速度欺骗三重干扰效果，它通过电缆与被保护目标相连接，两者具有相同的运动特性，载机和拖曳式诱饵在距离、速度和角度上分辨不出来，导引头的响应会成为两个射频源的复杂函数，这将产生一个角度误差，从而增加了导弹的脱靶距离。为了提高雷达抗拖曳式诱饵能力，从空间角度分辨力入手，在常规单脉冲雷达系统结构上，利用了结构的冗余信息，提取对角线差通道的接收信号，然后与和通道、俯仰差通道、方位差通道联合建立方程组，求解得到目标和诱饵的角度信息，并对两者的信号幅度进行了分离，提出了诱饵识别的方法。仿真结果证实了该方法的有效性。

A new method for detection and recognition of towed decoy jamming by radar seeker

Active towed radar decoy can deceive radars in angle , distance and speed . It connects the protected target by a cable .The decoy and the target have the same motion characteristics ,and they can’t be distinguished in distance ,velocity and angle .The response of seeker will become a complicated function of the two RF source .This will produce an angle error ,and increase the miss distance of the missile .In order to improve the ability of anti radar towed decoy ,this problem is solved from the perspective of space resolution . Based on the conventional monopulse radar system structure ,the signal of diagonal difference is extracted ,and simultaneous equations are established by using signal of the sum channel , azimuth difference channel , elevation difference channel and diagonal difference channel .The angle and amplitude of target and decoy can be obtained by solving equations . Then the method of decoy recognition is proposed . Simulation results demonstrate the effectiveness of this method .