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| 基于高度扫描的ISAR三维成像研究与仿真 | |
| 引用本文： | 闫伟,张凯,许家栋,胡楚锋.基于高度扫描的ISAR三维成像研究与仿真[J].系统仿真学报,2012,24(5):1088-1091. |
| 作者姓名： | 闫伟 张凯 许家栋 胡楚锋 |
| 作者单位： | 1. 西北工业大学电子信息学院,西安,710129 2. 西北工业大学电子信息学院,西安710129／空间微波技术重点实验室,西安710100 3. 西北工业大学无人机特种技术国家重点实验室,西安,710065 |
| 基金项目： | 国家自然科学基金(61102018);陕西省教育厅专项科研计划项目(2010JK891);空间微波技术重点实验室(9140C530303110C5304) |
| 摘 要： | 研究了基于高度扫描的大转角逆合成孔径雷达(ISAR)三维成像,针对干涉逆合成孔径雷达技术不能将同一距离和方位单元但不同高度上的散射中心进行区分以及大转角转台转动带来的越距离单元徙动等问题,在传统大转角ISAR成像基础上,增加了高度扫描,建立了三维成像系统,提出了适用于大角度转动的ISAR三维成像算法,应用波谱理论对三维目标的高度信息进行去耦,将其转化为二维大转角ISAR成像的问题,然后利用聚焦卷积积分算法进行成像,并分析了高度扫描的ISAR系统具有高度分辨率的原因。最后通过仿真目标模型进行验证,结果表明该算法具有三维成像能力,且能够得到高质量高分辨率的目标像。 |
| 关 键 词： | ISAR成像 大转角目标 三维成像 波谱理论 |
Three Dimensional ISAR Imaging Method Based on Amplitude Scanning |
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| YAN Wei,ZHANG Kai,XU Jia-dong,HU Chu-feng.Three Dimensional ISAR Imaging Method Based on Amplitude Scanning[J].Journal of System Simulation,2012,24(5):1088-1091. | |
| Authors: | YAN Wei ZHANG Kai XU Jia-dong HU Chu-feng |
| Institution: | 1.School of Electronic and Information,Northwestern Polytechnical University,Xi’an 710129,China; 2.National Key Laboratory of UAV Specialty Technique,Northwestern Polytechnical University,Xi’an 710065,China; 3 Science and Technology on Space Microwave Laboratory,Xi’an,Shaanxi 710100,China) |
| Abstract: | Three-dimensional inverse synthetic aperture radar(ISAR) imaging system based on amplitude scanning was studied.It could solve the problem that the interferometric inverse synthetic aperture radar(INISAR) system could not distinguish the targets with the same range distance and azimuth but different amplitude.The range cell migration problem caused by large angle rotation was also considered.The proposed system was constructed by adding an amplitude scanner on traditional ISAR system which could have resolution on amplitude domain to present for three dimensional imaging.On the basis of traditional two-dimensional ISAR convolution integral method,the amplitude information was decoupled.The resolution was then deduced in spatial frequency domain.The proposed method was testified by complex simulation results,which shows that the proposed method can be used to acquire high quality and high resolution image. |
| Keywords: | ISAR imaging large angle rotation three dimensional imaging spectrum theory |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |