摘要
针对空间三轴稳定目标成像问题,提出了一种基于二体模型的双基地逆合成孔径雷达(bistatic inverse synthetic aperture radar,ISAR)回波模拟方法。该方法利用二体运动模型模拟空间目标的在轨运动,考虑了目标平稳运动及三轴姿稳转动引起的散射点相对雷达视角变化,并加入目标的高速运动特性,生成了双基地逆合成孔径雷达的基带回波数据,并给出了双站雷达对目标可视区域的判定方法。最后,进行了仿真实验,仿真结果表明,二体模型与实际目标的运动轨道误差很小,同时,成像结果能够很好的反映目标的姿态变化特性。该回波模拟方法有利于空间目标的精确成像,并对成像试验的实施具有重要的指导意义。
Aiming at the imaging problem of space target,a bistatic inverse synthetic aperture radar（ISAR）echo simulation method based on a two-body model is proposed.The method simulates the orbital characteristics of space target based on the two-body model.The three-dimensional scatter model is built,the high speed movement and attitude stabilization are under consideration.Then the bistatic ISAR echo data is generated,and the determination method of target visible area relative to bistatic radar is given.Simulation results show that the error between the two-body model and real target orbit is small and the imaging results perfectly reflect the target attitude change.The echo simulation method based on the two-body model helps the accurate imaging of the space target and has an important guiding influence on imaging experiments.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2016年第8期1771-1779,共9页
Systems Engineering and Electronics
基金
国家自然科学基金(61401024)
北京理工大学基础研究基金(20140542001)资助课题
关键词
双基地逆合成孔径雷达
二体模型
空间目标
回波模拟
bistatic inverse synthetic aperture radar（ISAR）
two-body model
space target
echo simulation
