论文部分内容阅读
诱饵的检测是拖曳式诱饵(TRAD)干扰对抗的基础。对单脉冲雷达有无拖曳式诱饵干扰下平衡鉴相器(BPD)输出角误差信号进行了推导,根据平衡鉴相器的原理,得出了目标和诱饵干扰信号间的多普勒频率差会影响角误差信号的结论。当不存在拖曳式诱饵干扰时,经低通滤波器处理后角误差信号无变化;当存在拖曳式诱饵干扰时,经低通滤波器处理后角误差信号交流部分被滤除,角误差信号发生变化。根据诱饵存在与否时角误差信号的这一差异,利用门限检测实现对诱饵干扰的检测。仿真分析了不同干扰场景下的检测性能,验证了本文方法的有效性。
Bait detection is the basis of the TRAD interference countermeasure. Based on the principle of balanced phase detector, the Doppler frequency difference between the target and the decoy jamming signal is deduced The conclusion that affects the angle error signal. When there is no tow bait disturbance, the angular error signal does not change after the low-pass filter processing. When there is tow-type bait interference, the ac error part of the angular error signal is filtered by the low-pass filter and the angular error signal is generated Variety. According to the difference of the angular error signal when the bait exists or not, the threshold detection is used to detect the bait interference. Simulation analysis of the detection performance under different interference scenarios, verify the effectiveness of the method in this paper.