| 引用本文: | 刘记红，徐少坤，韩国强，魏雁飞. 基于压缩感知的进动目标ISAR成像方法[J]. 雷达科学与技术, 2017, 15(4): 403-409.[点击复制] |
| LIU Jihong, XU Shaokun, HAN Guoqiang, WEI Yanfei. ISAR Imaging Method for Precession Targets Based on Compressed Sensing[J]. Radar Science and Technology, 2017, 15(4): 403-409.[点击复制] |
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| 摘要: |
| 针对弹道中段进动目标姿态复杂变化给逆合成孔径雷达(Inverse Synthetic Aperture Radar,ISAR)成像带来的困难，在分析旋转对称进动目标回波模型的基础上，给出了回波模型的线性化表征形式，提出了基于压缩感知的进动目标成像方法，根据算法资源需求提供了两种数据处理方式，〖JP2〗即二维联合处理和分频处理，并对二者的性能进行了分析比较。〖KG-*4〗基于暗室测量数据的实验结果表明，与现有方法相比，〖JP〗所提方法通过少量回波数据即可实现进动目标的高分辨成像，改善了成像质量，并提高了对进动参数的稳定性。 |
| 关键词: 逆合成孔径雷达成像 压缩感知 进动目标 旋转对称 |
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| ISAR Imaging Method for Precession Targets Based on Compressed Sensing |
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LIU Jihong, XU Shaokun, HAN Guoqiang, WEI Yanfei
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Luoyang Electronic Equipment Test Center of China
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| Abstract: |
| The precession characteristics of the targets in ballistic midcourse can bring some difficulties for the inverse synthetic aperture radar(ISAR) imaging. In this paper, the compressed sensing(CS) concept is introduced into the ISAR imaging of precession targets with rotationally symmetric structure, and high resolution imaging can be achieved with a small number of measurements. According to the resource requirement of the imaging algorithm, two data processing modes are proposed, i.〖KG-*5〗e〖KG-*5〗.〖KG-*6〗, two-dimensional joint processing and frequency division processing, and their performances are analyzed and compared. Simulation experiments indicate that the proposed method performs better than the existing methods in terms of imaging quality and robustness to precession parameters. |
| Key words: ISAR imaging compressed sensing precession target rotationally symmetric structure |
