| 基于频率步进信号的旋转式合成孔径雷达成像方法 |
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| 引用本文： | 曾操,梁思嘉,王威,徐青. 基于频率步进信号的旋转式合成孔径雷达成像方法[J]. 雷达学报, 2014, 3(4): 401-408. DOI: 10.3724/SP.J.1300.2014.14043 |
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| 作者姓名： | 曾操 梁思嘉 王威 徐青 |
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| 作者单位： | (西安电子科技大学雷达信号处理国家重点实验室 西安 710071) |
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| 基金项目： | 国家重点基础研究发展计划(973计划)(2011CB707001);国家自然科学基金(61101243,61101242);长江学者和创新团队发展计划(IRT0954)资助课题 |
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| 摘 要： | 针对频率步进信号实现旋转式合成孔径雷达成像的难题，该文提出了脉冲间距离走动校正的旋转式合成孔径雷达成像方法。首先，推导了频率步进雷达旋转SAR 几何模型，然后提出了频率步进雷达脉冲间距离走动及其频域校正方法，接着采用-k 算法实现了场景的高分辨成像，最后对方位分辨性能进行了详细分析。计算机仿真结果验证了该方法的有效性以及高分辨性能。
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| 关 键 词： | 旋转式合成孔径雷达 频率步进信号 -k 算法 |
| 收稿时间： | 2014-03-04 |
Imaging Algorithm for Rotor Synthetic Aperture Radar Using Stepped-frequency Waveform |
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| Zeng Cao,Liang Si-jia,Wang Wei,Xu Qing. Imaging Algorithm for Rotor Synthetic Aperture Radar Using Stepped-frequency Waveform[J]. Journal of Radars, 2014, 3(4): 401-408. DOI: 10.3724/SP.J.1300.2014.14043 |
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| Authors: | Zeng Cao Liang Si-jia Wang Wei Xu Qing |
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| Affiliation: | (National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China) |
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| Abstract: | For ROtor Synthetic Aperture Radar (ROSAR) using the stepped-frequency waveform, an imaging method based on Range Migration Correction (RMC) for ROSAR is proposed. First, the signal model of ROSAR using stepped-frequency waveform is derived; Second, the range migration correction in frequency domain is proposed; Third, the high-resolution images are achieved by using the -k algorithm; Finally, the azimuth resolution performance is analyzed. Simulation results demonstrate the effectiveness and high resolution performance of the proposed method. |
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