Ground moving target imaging by synthetic aperture radar based on an unified framework of keystone transformation
This paper presents a new SAR ground moving target imaging (GMTIm) algorithm based on an unified framework of Keystone transformation (KT). To combat the inherent range-azimuth coupling, an tandem two-step strategy is designed, where the range decoupling is implemented by polar format algorithm...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
| Published: |
2016
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/82897 http://hdl.handle.net/10220/40377 |
| _version_ | 1826130742310076416 |
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| author | Yang, Lei Zhao, Lifan Wang, Lu Bi, Guoan |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Yang, Lei Zhao, Lifan Wang, Lu Bi, Guoan |
| author_sort | Yang, Lei |
| collection | NTU |
| description | This paper presents a new SAR ground moving target imaging (GMTIm)
algorithm based on an unified framework of Keystone transformation
(KT). To combat the inherent range-azimuth coupling, an
tandem two-step strategy is designed, where the range decoupling
is implemented by polar format algorithm (PFA) and the azimuth
decoupling is finished by an novel time-frequency representation
method that is Lv’s distribution (LVD). We show, mathematically,
that the azimuth resampling of PFA has inherently the same mechanism
as the KT, and also, the LVD achieves the optimal performance
when it is performed in accordance with the KT principle. Therefore,
multiple moving targets can be imaged simultaneously. Focused targets’
responses can be obtained in both range and azimuth dimensions.
Isotropic point target simulation is designed, and experiments
are carried out to validate our proposed SAR-GMTIm algorithm. |
| first_indexed | 2024-10-01T08:00:50Z |
| format | Conference Paper |
| id | ntu-10356/82897 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T08:00:50Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/828972020-03-07T13:24:44Z Ground moving target imaging by synthetic aperture radar based on an unified framework of keystone transformation Yang, Lei Zhao, Lifan Wang, Lu Bi, Guoan School of Electrical and Electronic Engineering 2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) Synthetic aperture radar (SAR) ground moving target imaging Keystone transformation polar format algorithm Lv’s distribution This paper presents a new SAR ground moving target imaging (GMTIm) algorithm based on an unified framework of Keystone transformation (KT). To combat the inherent range-azimuth coupling, an tandem two-step strategy is designed, where the range decoupling is implemented by polar format algorithm (PFA) and the azimuth decoupling is finished by an novel time-frequency representation method that is Lv’s distribution (LVD). We show, mathematically, that the azimuth resampling of PFA has inherently the same mechanism as the KT, and also, the LVD achieves the optimal performance when it is performed in accordance with the KT principle. Therefore, multiple moving targets can be imaged simultaneously. Focused targets’ responses can be obtained in both range and azimuth dimensions. Isotropic point target simulation is designed, and experiments are carried out to validate our proposed SAR-GMTIm algorithm. Accepted version 2016-04-07T08:34:31Z 2019-12-06T15:07:47Z 2016-04-07T08:34:31Z 2019-12-06T15:07:47Z 2015 Conference Paper Yang, L., Zhao, L., Wang, L., & Bi, G. (2015). Ground moving target imaging by synthetic aperture radar based on an unified framework of keystone transformation. 2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). https://hdl.handle.net/10356/82897 http://hdl.handle.net/10220/40377 10.1109/ICASSP.2015.7178473 en © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [http://dx.doi.org/10.1109/ICASSP.2015.7178473]. 5 p. application/pdf |
| spellingShingle | Synthetic aperture radar (SAR) ground moving target imaging Keystone transformation polar format algorithm Lv’s distribution Yang, Lei Zhao, Lifan Wang, Lu Bi, Guoan Ground moving target imaging by synthetic aperture radar based on an unified framework of keystone transformation |
| title | Ground moving target imaging by synthetic aperture radar based on an unified framework of keystone transformation |
| title_full | Ground moving target imaging by synthetic aperture radar based on an unified framework of keystone transformation |
| title_fullStr | Ground moving target imaging by synthetic aperture radar based on an unified framework of keystone transformation |
| title_full_unstemmed | Ground moving target imaging by synthetic aperture radar based on an unified framework of keystone transformation |
| title_short | Ground moving target imaging by synthetic aperture radar based on an unified framework of keystone transformation |
| title_sort | ground moving target imaging by synthetic aperture radar based on an unified framework of keystone transformation |
| topic | Synthetic aperture radar (SAR) ground moving target imaging Keystone transformation polar format algorithm Lv’s distribution |
| url | https://hdl.handle.net/10356/82897 http://hdl.handle.net/10220/40377 |
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