| 频率步进雷达多目标ISAR成像方法 |
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| 引用本文： | 崔应留,罗文茂,王德纯.频率步进雷达多目标ISAR成像方法[J].数据采集与处理,2015,30(4):810-815. |
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| 作者姓名： | 崔应留 罗文茂 王德纯 |
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| 作者单位： | 1.
南京理工大学电子工程与光电技术学院,南京，210094；2. 南京审计学院工学院，南京，21
1815；3. 南京电子技术研究所,南京,210039 |
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| 摘 要： | 针对频率步进雷达同一波束内多个运动目标在径向上重叠
而无法分辨时的ISAR成像问题，提出了一种基于调频傅里叶变换的ISAR多目标成像新方法。
在构建频率步进雷达多目标回波信号模型的基础上，采用调频傅里叶变换精确估计各个目标
的速度参数，结合 Clean方法实现对多目标回波信号的分离，完成多目标ISAR成像。仿真实
验结果进一步验证了文章所采用方法的有效性。
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| 关 键 词： | 多目标成像 频率步进 调频傅里叶变换 速度估计 |
Stepped Frequency ISAR Imaging of Multiple Targets |
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| Cui Yingliu,Luo Wenmao,Wang Dechun.Stepped Frequency ISAR Imaging of Multiple Targets[J].Journal of Data Acquisition & Processing,2015,30(4):810-815. |
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| Authors: | Cui Yingliu Luo Wenmao Wang Dechun |
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| Affiliation: | 1.School of Electionic and Optical Engineering, Nanjing Un
iversity of Science and Technology, Nanjing, 210094, China; 2.School of Technol
ogy, Nanjing Audit Univ
ersity, Nanjing, 211815, China; 3.Nanjing Research Institute of Electronics Tec
hnology, Nanjing, 210039, China |
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| Abstract: | Aiming at the stepped frequency ISAR imagi
ng problems of multiple moving targets in the same antenna beam overlapped
over the range, a new method of stepped frequency ISAR imaging of multiple tar
gets is proposed, based on the chirp Fourier transform (CFT).
On the basis of the m
u
lti target echoes model of stepped frequency radar
, the velocities of
each target can be estimated accurately by the CFT. Then the multiple target ec
ho signals can be separated by combining CFT and clean idea, thus the ISAR imag
ing is finished. The simulation results also prove the validity of the proposed method. |
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| Keywords: | imaging of multiple targets stepped frequency chirp Fourier transf
orm speed estimation |
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