弹道目标中段雷达成像仿真研究

Simulation of Radar Imaging of Ballistic Target in Midcourse

对弹道目标进行ISAR成像识别是分辨真假目标的重要手段。本文研究了中段弹道目标成像仿真问题。简介ISAR成像技术后,仿真了中段弹道。研究了中段弹道目标成像,分析了在有无调姿两种情形下和不同弹道阶段对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. The simulation of ISAR imaging of ballistic target in midcourse is described and the effects of the target's motion on ISAR are analyzed. An ideal trajectory in midcourse is simulated. Then, according to the simulation data, the ISAR imaging is simulated when target adjusts its posture relative to radar. In addition, the required pulse recurrence frequency (PRF) and needed coherent accumulating time for imaging are also discussed. The simulation results show that radar should adjust PRF and coherent accumulating time for radar imaging in different conditions.