| 机载干涉SAR/ISAR对地面慢速目标成像研究 |
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| 引用本文： | 朱岱寅,朱兆达.机载干涉SAR/ISAR对地面慢速目标成像研究[J].电子与信息学报,2003,25(5):585-591. |
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| 作者姓名： | 朱岱寅 朱兆达 |
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| 作者单位： | 南京航空航天大学电子工程系,南京,210016 |
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| 基金项目： | 国家自然科学基金60082002，航空科学基金资助项目00F52057，雷达信号处理国防科技重点实验室基金96JS01.2.2HK0201 |
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| 摘 要： | 该文研究用机载干涉SAR/ISAR技术对地面慢速目标成像，该技术利用SAR成像的距离和横向距离高分辨率，以及干涉仪的空域对消，实现杂波抑制，提高信杂比。动目标的真实方位由相位比较干涉仪测定。进而用ISAR处理得到慢速目标的高分辨图像。文中详细讨论了机载干涉SAR/ISAR系统框图和工作原理，并导出了该系统中SAR、干涉仪空域对消和测向以及ISAR处理的定量关系式。理论分析和初步计算机仿真证明了这项技术的正确性。
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| 关 键 词： | 地面动目标成像 地面动目标指示 干涉仪 合成孔径雷达 逆合成孔径雷达 |
| 收稿时间： | 2001-10-22 |
| 修稿时间： | 2001年10月22 |
Studies of ground slow-moving target imaging by airborne interferometric sar/isar |
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| Zhu Daiyin,Zhu Zhaoda.Studies of ground slow-moving target imaging by airborne interferometric sar/isar[J].Journal of Electronics & Information Technology,2003,25(5):585-591. |
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| Authors: | Zhu Daiyin Zhu Zhaoda |
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| Affiliation: | Dept. of Electron. Eng., Nanjing Univ. of Aeronaut and Astronaut.,Nanjing 210016 China |
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| Abstract: | In this paper, ground slow-moving target imaging via airborne interferometric SAR/ISAR technique is investigated. Land clutter suppression and SCR improvement are achieved by range and cross-range two-dimensional high resolution of SAR imaging and spatial domain cancellation of interferometer. True azimuth of moving target is determined using phase-comparison interferometer. Furthermore, high resolution image of the slow-moving target is obtained by IS AR processing. The block diagram and the operational principle of the airborne interferometric SAR/ISAR system are discussed in detail. Quantitative relations for SAR, interferometer spatial domain cancellation, direction finding and ISAR processing are derived. Theoretical analysis and preliminary computer simulation reveal the validity of this technique. |
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| Keywords: | Ground moving target imaging Ground moving target indication Interferome- ter SAR ISAR |
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