| 基于距离徙动轨迹的空间目标ISAR距离对准算法 |
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| 引用本文： | 俞翔,朱岱寅,李俊强,云涛,黄翔飞.基于距离徙动轨迹的空间目标ISAR距离对准算法[J].系统工程与电子技术,2017,39(4):775-781. |
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| 作者姓名： | 俞翔 朱岱寅 李俊强 云涛 黄翔飞 |
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| 作者单位： | 1. 南京工程学院计算机工程学院, 江苏 南京 211167; 2. 南京航空航天大学电子信息工程学院, 江苏 南京 210016; 3. 中国人民解放军63778部队, 黑龙江 佳木斯 154002 |
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| 摘 要： | 针对空间目标的运动特征,通过研究目标距离徙动轨迹与等效运动模型,构建了一个欠定的运动方程组,基于全局熵最优化准则求解出目标运动参数,提出了一种全新的距离对准算法。实验结果表明,该算法具有较高的准确性,更重要的是,距离对准过程中不会引入距离像随机偏移误差和高频相位误差,这也是应用大转角高分辨成像方法的前提条件。
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Range alignment algorithm based on the range migration trajectory for the space target ISAR |
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| YU Xiang,ZHU Daiyin,LI Junqiang,YUN Tao,HUANG Xiangfei.Range alignment algorithm based on the range migration trajectory for the space target ISAR[J].System Engineering and Electronics,2017,39(4):775-781. |
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| Authors: | YU Xiang ZHU Daiyin LI Junqiang YUN Tao HUANG Xiangfei |
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| Institution: | 1. Department of Computer Engineering, Nanjing Institute of Technology, Nanjing 211167, China;2.College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016,China; 3. Unit 63778 of the PLA, Jiamusi 154002, China |
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| Abstract: | Aiming at the motion feature of the space and near space target, by studying the range migration trajectory and the equivalent motion model, a novel range alignment algorithm is put forword, which is based on the global entropy optimization criterion for solving underdetermined equations. Simulation and experimental results show that it is an efficient algorithm. More important, the random offset error and the high frequency phase error are not introduced, which is the precondition of applying the high resolution imaging method. |
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