为了实现在非相干两点源诱偏下对比相被动雷达导引头测向性能的动态分析,文中在对比相体制反辐射导引头测向和跟踪原理分析的基础上,分析了两点源诱偏比相体制导引头的原理,推导了对合成信号的测向公式,得到了导引头在不同功率比时跟踪姿态的变化情况。指出比相体制导引头跟踪方向偏向大功率点附近,且每一时刻的调整角度具有一定的概率性,非相干两点源起到了诱偏作用,最后的动态仿真证明了结论的正确性。

In order to dynamically analyze the phase-comparison passive radar seeker (PRS) direction finding performance with decoy of non-coherent dual-source, the principle of non-coherent dual-source decoying phase-comparison PRS was analyzed based on its direction finding and tracking principle, and the direction finding formula of synthetic signals was derived. At last, the mode of attitude tracking was got with different power ratio. It shows that PRS will track the source with high power and the angle to be adjusted every moment is with probability, then the decoy achieves under the condition of non-coherent dual-source, the dynamic simulation result confirms the correctness of the theory.