A Focusing Method of Buildings for Airborne Circular SAR
Airborne circular synthetic aperture radar (CSAR) can realize high-resolution imaging of the scene over 360 degrees azimuth angle variation. Aiming at the problem of focusing of buildings for the airborne CSAR, this paper first analyzes the phase errors of CSAR buildings focusing in detail, and the...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/16/2/253 |
| _version_ | 1797342652863086592 |
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| author | Dong Feng Daoxiang An Jian Wang Leping Chen Xiaotao Huang |
| author_facet | Dong Feng Daoxiang An Jian Wang Leping Chen Xiaotao Huang |
| author_sort | Dong Feng |
| collection | DOAJ |
| description | Airborne circular synthetic aperture radar (CSAR) can realize high-resolution imaging of the scene over 360 degrees azimuth angle variation. Aiming at the problem of focusing of buildings for the airborne CSAR, this paper first analyzes the phase errors of CSAR buildings focusing in detail, and the analytic relationship between the scatterer height and azimuth focusing quality is deduced. Then, a focusing method of CSAR buildings based on the back projection algorithm is proposed. This method adopts the processing strategy of multi-layers imaging, and it is able to improve azimuth focusing quality of the buildings which have large height dimension. The proposed method is especially suitable for the high-resolution imaging and monitoring of the urban site with high-rise buildings in the airborne CSAR scenario. The correctness of the theoretical analysis and the validity of the proposed method are verified by using both simulation results and Ku-band airborne CSAR real data processing results. |
| first_indexed | 2024-03-08T10:36:22Z |
| format | Article |
| id | doaj.art-5e6c18814d3b4bc4879f2af706852f08 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-08T10:36:22Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-5e6c18814d3b4bc4879f2af706852f082024-01-26T18:16:45ZengMDPI AGRemote Sensing2072-42922024-01-0116225310.3390/rs16020253A Focusing Method of Buildings for Airborne Circular SARDong Feng0Daoxiang An1Jian Wang2Leping Chen3Xiaotao Huang4College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, ChinaCollege of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, ChinaCollege of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, ChinaCollege of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, ChinaCollege of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, ChinaAirborne circular synthetic aperture radar (CSAR) can realize high-resolution imaging of the scene over 360 degrees azimuth angle variation. Aiming at the problem of focusing of buildings for the airborne CSAR, this paper first analyzes the phase errors of CSAR buildings focusing in detail, and the analytic relationship between the scatterer height and azimuth focusing quality is deduced. Then, a focusing method of CSAR buildings based on the back projection algorithm is proposed. This method adopts the processing strategy of multi-layers imaging, and it is able to improve azimuth focusing quality of the buildings which have large height dimension. The proposed method is especially suitable for the high-resolution imaging and monitoring of the urban site with high-rise buildings in the airborne CSAR scenario. The correctness of the theoretical analysis and the validity of the proposed method are verified by using both simulation results and Ku-band airborne CSAR real data processing results.https://www.mdpi.com/2072-4292/16/2/253back projection (BP)buildingscircular trajectoryfocusingsynthetic aperture radar (SAR) |
| spellingShingle | Dong Feng Daoxiang An Jian Wang Leping Chen Xiaotao Huang A Focusing Method of Buildings for Airborne Circular SAR Remote Sensing back projection (BP) buildings circular trajectory focusing synthetic aperture radar (SAR) |
| title | A Focusing Method of Buildings for Airborne Circular SAR |
| title_full | A Focusing Method of Buildings for Airborne Circular SAR |
| title_fullStr | A Focusing Method of Buildings for Airborne Circular SAR |
| title_full_unstemmed | A Focusing Method of Buildings for Airborne Circular SAR |
| title_short | A Focusing Method of Buildings for Airborne Circular SAR |
| title_sort | focusing method of buildings for airborne circular sar |
| topic | back projection (BP) buildings circular trajectory focusing synthetic aperture radar (SAR) |
| url | https://www.mdpi.com/2072-4292/16/2/253 |
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