拖曳式诱饵干扰机理及其时频特性分析

摘要

拖曳式诱饵干扰通过与目标协同运动形成雷达波束内的两点源，诱骗雷达波束指向，实现真正意义的角度欺骗。以典型拖曳式有源雷达诱饵为例，首先通过对拖曳式诱饵干扰流程、干扰原理以及样式的分析，揭示干扰的本质和特点；然后在两种典型动态场景下，从静止三角几何以及动态过程两方面详细分析了干扰的时频特性，揭示了目标与诱饵特征差异的变化规律，为干扰对抗提供了基本条件。%The towed radar active decoy (TRAD) flies with the airplane to form the two point sources within the radar beam .The decoy beguiles the direction of radar beam ,and realizes true angle deception .The jamming course ,jamming theory and jamming mode with the TRAD are analyzed ,and the essence and charac‐teristic of jamming is illustrated .Then under two typical dynamic scenes ,the time‐frequency characteristic of the TRAD is analyzed from the geometry relationship and dynamic jamming course .The rule of difference between the target and the decoy is obtained ,and this supports the basic condition for the anti‐jamming of the T RAD .