弹道导弹目标特性分析及雷达回波模拟

从自由段导弹目标的运动特性出发,对沿椭圆轨道高速运动并伴有进动的弹头雷达回波特性进行分析。建立了导弹的最小能量弹道模型和进动模型,分析了飞行过程中弹头姿态角的变化规律,研究了导弹目标的平动和进动对回波信号的影响,进而引入准静态技术的思想,研究了考虑脉内运动的弹头雷达回波模拟方法,最后给出弹头椭圆轨道、姿态角、回波信号和一维距离像的仿真结果,证明了理论分析的正确性和合理性。

Characterization analysis and simulation of radar echo from ballistic missile targets

Based on motion characteristic of ballistic missile targets,radar echo characteristics of a warhead with high-speed movement along an elliptical orbit and precessing are analyzed.Fristly,the minimum energy trajectory model and precession model of ballistic missile targets are established,and the law of attitude angle changing with time is also analyzed.Then,the impacts of trajectory movement and precession on the echo signals are discussed,and the idea of quasi-static is introduced and the radar echo simulation method considering the pulse motion is given.Finally,simulation results of elliptical orbit,attitude angle,echo signal and high resolution range profile(HRRP) are given to prove the validity of theoretical analysis.