摘要
对弹道目标进行逆合成孔径雷达(ISAR)成像识别是分辨真假目标的重要手段。根据ISAR成像基本原理,结合弹道导弹中段飞行的轨迹特点和速度特征,采用坐标旋转的方法对弹道导弹飞行中段目标成像转角条件进行了仿真,探讨了弹道不同阶段和雷达位于不同位置情况下对雷达成像相干积累时间的要求。仿真结果表明,在不同情形下,雷达必须适当调整脉冲积累时间和改变脉冲重复频率才能实现有效成像。
Inverse synthetic aperture radar （ISAR） imaging of ballistic target is an important means for distinguishing decoy. According to the theory of ISAR imaging and the trajectory and velocity features of ballistic missile in midcourse flight, the ballistic condition is simulated with coordinate rotation method, the effects of the target＇ s motion on ISAR are analyzed. The simulation results demonstrate that radar should adjust coherent accumulation time and change pulse repetition frequency（PRF） for effectively imaging in different conditions.
出处
《电讯技术》
北大核心
2009年第1期67-71,共5页
Telecommunication Engineering
关键词
逆合成孔径雷达
成像识别
弹道导弹
转角条件
坐标旋转
ISAR
imaging identification
ballistic missile
ballistic condition
coordinate rotation
