ISAR Imaging of Multiple Targets With Time-Delay Receive Array
For inverse synthetic aperture radar (ISAR), it is desirable to perform simultaneously imaging of multi-target within a wide spatial angle region. Besides, it is likely that multiple targets are covered by several beams, or sometimes within a single beam, which results in imaging challenge for each...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2020-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9244066/ |
| _version_ | 1818917948110143488 |
|---|---|
| author | Mengdi Zhang Guisheng Liao Jingwei Xu Lan Lan Ka Deng |
| author_facet | Mengdi Zhang Guisheng Liao Jingwei Xu Lan Lan Ka Deng |
| author_sort | Mengdi Zhang |
| collection | DOAJ |
| description | For inverse synthetic aperture radar (ISAR), it is desirable to perform simultaneously imaging of multi-target within a wide spatial angle region. Besides, it is likely that multiple targets are covered by several beams, or sometimes within a single beam, which results in imaging challenge for each single target. To alleviate this problem, this paper devises a new approach by introducing time delay across different receive array elements, realizing multi-target separation and independent imaging. By using the time-delay receive array with linear frequency modulation (LFM) waveform, the equivalent receive beampattern is range-angle-dependent and it is possible to perform beamforming in joint range and angle domain. In the time-delay receive array, an element compensation method is presented to cope with the variation of the equivalent spatial frequency. After receive beamforming, the conventional high resolution ISAR imaging method can be performed. With the proposed method, the multi-target echo can be separated under low signal noise ratio (SNR). Simulation results have verified the effectiveness of the proposed approach. |
| first_indexed | 2024-12-20T00:42:10Z |
| format | Article |
| id | doaj.art-ceb3735ebb824e88bd563609dac7e9b6 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-20T00:42:10Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-ceb3735ebb824e88bd563609dac7e9b62022-12-21T19:59:32ZengIEEEIEEE Access2169-35362020-01-01819975919976710.1109/ACCESS.2020.30347439244066ISAR Imaging of Multiple Targets With Time-Delay Receive ArrayMengdi Zhang0https://orcid.org/0000-0001-9620-5366Guisheng Liao1Jingwei Xu2Lan Lan3https://orcid.org/0000-0002-9398-1308Ka Deng4National Laboratory of Radar Signal Processing, Xidian University, Xi’an, ChinaNational Laboratory of Radar Signal Processing, Xidian University, Xi’an, ChinaNational Laboratory of Radar Signal Processing, Xidian University, Xi’an, ChinaNational Laboratory of Radar Signal Processing, Xidian University, Xi’an, ChinaChinese Academy of Sciences, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Shenzhen, ChinaFor inverse synthetic aperture radar (ISAR), it is desirable to perform simultaneously imaging of multi-target within a wide spatial angle region. Besides, it is likely that multiple targets are covered by several beams, or sometimes within a single beam, which results in imaging challenge for each single target. To alleviate this problem, this paper devises a new approach by introducing time delay across different receive array elements, realizing multi-target separation and independent imaging. By using the time-delay receive array with linear frequency modulation (LFM) waveform, the equivalent receive beampattern is range-angle-dependent and it is possible to perform beamforming in joint range and angle domain. In the time-delay receive array, an element compensation method is presented to cope with the variation of the equivalent spatial frequency. After receive beamforming, the conventional high resolution ISAR imaging method can be performed. With the proposed method, the multi-target echo can be separated under low signal noise ratio (SNR). Simulation results have verified the effectiveness of the proposed approach.https://ieeexplore.ieee.org/document/9244066/Multi-targettime-delay receive arrayinverse synthetic aperture radar (ISAR)receive beamforming |
| spellingShingle | Mengdi Zhang Guisheng Liao Jingwei Xu Lan Lan Ka Deng ISAR Imaging of Multiple Targets With Time-Delay Receive Array IEEE Access Multi-target time-delay receive array inverse synthetic aperture radar (ISAR) receive beamforming |
| title | ISAR Imaging of Multiple Targets With Time-Delay Receive Array |
| title_full | ISAR Imaging of Multiple Targets With Time-Delay Receive Array |
| title_fullStr | ISAR Imaging of Multiple Targets With Time-Delay Receive Array |
| title_full_unstemmed | ISAR Imaging of Multiple Targets With Time-Delay Receive Array |
| title_short | ISAR Imaging of Multiple Targets With Time-Delay Receive Array |
| title_sort | isar imaging of multiple targets with time delay receive array |
| topic | Multi-target time-delay receive array inverse synthetic aperture radar (ISAR) receive beamforming |
| url | https://ieeexplore.ieee.org/document/9244066/ |
| work_keys_str_mv | AT mengdizhang isarimagingofmultipletargetswithtimedelayreceivearray AT guishengliao isarimagingofmultipletargetswithtimedelayreceivearray AT jingweixu isarimagingofmultipletargetswithtimedelayreceivearray AT lanlan isarimagingofmultipletargetswithtimedelayreceivearray AT kadeng isarimagingofmultipletargetswithtimedelayreceivearray |