弹道导弹目标微动特征分析及参数提取

Analysis of Minor-motion Feature and Its Parameters Extraction for Ballistic Missile Target

运动特征是弹道导弹雷达目标识别的主要特征之一,在弹道中段真假弹头有着不同的微动特征.针对弹道导弹的3种微动形式(摆动、自旋和锥旋),给出了对应的微多普勒表达式,分析了其微多普勒的频率特征,提出采取自相关法来提取微动频率,最后仿真验证了所提方法的正确性.

One of the main characteristics of identifying the ballistic missile targets using radar is the motion characteristic, while the real and false warheads have different minor-motion features in the moving-course. Aimed at three types of minor-motion （swing, rotation and coning） in the ballistic missile, the corresponding minor-Doppler expressions were given, and its minor-Doppler frequency features analyzed, and the scheme of extracting minor- motion frequency using the self-correlation approach proposed as well. Eventually, by simulation it shows that the proposed method is of availability.