针对箔条微动对回波信号调制的问题, 提出一种单根箔条回波构建方法。首先建立单根箔条的典型微动模式的运动学方程, 然后基于散射中心对该微动模式下的单根箔条回波进行仿真, 最后通过时频方法对单根箔条回波信号的微动变化规律进行分析。仿真结果表明, 建立的单根箔条微动模型能够有效地反映箔条回波信号的微动特性, 为精确建立箔条云回波模型提供了技术支撑, 并为有效识别箔条干扰、改善雷达性能提供了理论依据。

For the problem of chaff micro-motion on echo signal modulation, a single chaff echo construction method is proposed. Firstly the kinematic equation of a typical micro-motion mode of single chaff is established. Then, the single chaff echo in the micro-motion mode is simulated based on the scattering center, and finally the law of the micro-motion change of the chaff echo signal is analyzed by the time-frequency method. The simulation results show that the single chaff micro-motion model established in this paper can effectively reflect the micro-motion characteristics of the chaff echo signal, provide technical support for accurate establishing of the chaff cloud echo model, and provide theoretical basis for effectiveness of chaff jamming recognition and improvement of radar performance.