[关键词]
[摘要]
介绍了弹道导弹运动目标特征提取和雷达识别的研究概况,针对锥顶不动、进动角固定的匀速进动锥形弹头目标,对其典型运动进行建模,给出了回波的解析表达式,利用数值解的方法,对回波信号进行了频谱分析和时频分析,提取了频谱调制特征和微RCS特征,使用Wigner-Ville分布峰值检测法,提取了回波信号的微多普勒特征,给出了使用雷达微动特征识别弹道导弹弹头的途径.最后给出了回波信号时频分布、微多普勒、多普勒谱和微RCS的仿真结果,证明了理论分析的正确性.
[Key word]
[Abstract]
The research status of ballistic missile target motion feature extraction and radar recognition is introduced.Then,a typical motion model is set up for a cone-shaped ballistic missile warhead target with uniform precessing rate,steady precessing angle and stationary cone tip.An analytic expression of the echo from the target is proposed.Fourier transform and time-frequency transform are used to analyze the echo signal by means of numeric method.Based on above mentioned analysis,spectrum and micro-RCS of ech...
[中图分类号]
TJ761.3
[基金项目]
中国博士后科学基金面上资助?
