| 地面车辆目标高质量SAR图像快速仿真方法 |
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| 引用本文： | 董纯柱,胡利平,朱国庆,殷红成. 地面车辆目标高质量SAR图像快速仿真方法[J]. 雷达学报, 2015, 4(3): 351-360. DOI: 10.12000/JR15057 |
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| 作者姓名： | 董纯柱 胡利平 朱国庆 殷红成 |
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| 作者单位： | 1.(电磁散射重点实验室 北京 100854)2.(中国传媒大学信息工程学院 北京 100024) |
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| 基金项目： | 自然科学基金重大项目(61490695)资助课题 |
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| 摘 要： | 为满足基于模板的SAR地面车辆目标识别对海量高质量模板图像的工程应用需求,该文提出了一种基于射线追踪技术的SAR信号级高效仿真方法.该方法通过构建地面车辆目标SAR仿真场景物理模型并利用射线追踪方法准确模拟SAR探测过程中电磁波与场景中目标与环境的作用机理,实现对地面环境的宽带相干杂波、表面粗糙的复杂目标的宽带电磁散射以及地面-目标间耦合散射的快速计算,并通过SAR成像处理和图像相似度评估确认形成高质量SAR模板图像.数值结果验证了该文方法的准确性和高效性.
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| 关 键 词： | 电磁散射 SAR图像仿真 射线追踪技术 随机散射方法 图像评估 |
| 收稿时间： | 2015-05-15 |
Efficient Simulation Method for High Quality SAR Images of Complex Ground Vehicles |
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| Dong Chun-zhu,Hu Li-ping,Zhu Guo-qing,Yin Hong-cheng. Efficient Simulation Method for High Quality SAR Images of Complex Ground Vehicles[J]. Journal of Radars, 2015, 4(3): 351-360. DOI: 10.12000/JR15057 |
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| Authors: | Dong Chun-zhu Hu Li-ping Zhu Guo-qing Yin Hong-cheng |
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| Affiliation: | 1.(National Electromagnetic Scattering Laboratory, Beijing 100854, China)2.(Information Engineering School, Communication University of China, Beijing 100024, China) |
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| Abstract: | Aiming at meeting the requirement of the amass high-quality SAR images needed by template-based ground target recognition engineering practice, a novel efficient SAR signal level simulation method is proposed. The electromagnetic scattering interaction mechanisms including coherent clutter of ground, multiple reflection and edge diffraction of vehicle, coupling-scattering between vehicle and ground are accurately estimated by utilizing an efficient ray-tracing technique. High quality SAR images are finally created through the SAR imaging procedure. Simulation results show that, the new method is feasible and effective. |
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