Channel Phase Error Compensation for MIMO-SAR
Multi-input multioutput (MIMO) is a novel technique to achieve high-resolution as well as wide swath in synthetic aperture radar (SAR) systems. Channel imbalance is inevitable in multichannel systems that it declines the imaging quality. Generally, the imbalance cannot be fully compensated by simple...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2014/798673 |
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| _version_ | 1849406056261746688 |
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| author | Lei Zhang Yunkai Deng Robert Wang |
| author_facet | Lei Zhang Yunkai Deng Robert Wang |
| author_sort | Lei Zhang |
| collection | DOAJ |
| description | Multi-input multioutput (MIMO) is a novel technique to achieve high-resolution as well as wide swath in synthetic aperture radar (SAR) systems. Channel imbalance is inevitable in multichannel systems that it declines the imaging quality. Generally, the imbalance cannot be fully compensated by simple internal calibration in a MIMO-SAR system. In this paper, a new algorithm based on raw data is presented to remove the channel phase error. Based on the error source, this approach models the phase error as two parts: the transmit phase error and the receive phase error. The receive phase error is removed using cost function at the azimuth processing stage, whereas the transmit phase error is estimated with correlation. Point target simulations confirm the influence of channel phase error and the validation of the proposed approach. Besides, the performance is also investigated. |
| format | Article |
| id | doaj-art-525d7a87b9904137a0ed840dc2ad7aef |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-525d7a87b9904137a0ed840dc2ad7aef2025-08-20T03:36:31ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772014-01-01201410.1155/2014/798673798673Channel Phase Error Compensation for MIMO-SARLei Zhang0Yunkai Deng1Robert Wang2Department of Spaceborne Microwave Remote Sensing System, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, ChinaDepartment of Spaceborne Microwave Remote Sensing System, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, ChinaDepartment of Spaceborne Microwave Remote Sensing System, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, ChinaMulti-input multioutput (MIMO) is a novel technique to achieve high-resolution as well as wide swath in synthetic aperture radar (SAR) systems. Channel imbalance is inevitable in multichannel systems that it declines the imaging quality. Generally, the imbalance cannot be fully compensated by simple internal calibration in a MIMO-SAR system. In this paper, a new algorithm based on raw data is presented to remove the channel phase error. Based on the error source, this approach models the phase error as two parts: the transmit phase error and the receive phase error. The receive phase error is removed using cost function at the azimuth processing stage, whereas the transmit phase error is estimated with correlation. Point target simulations confirm the influence of channel phase error and the validation of the proposed approach. Besides, the performance is also investigated.http://dx.doi.org/10.1155/2014/798673 |
| spellingShingle | Lei Zhang Yunkai Deng Robert Wang Channel Phase Error Compensation for MIMO-SAR International Journal of Antennas and Propagation |
| title | Channel Phase Error Compensation for MIMO-SAR |
| title_full | Channel Phase Error Compensation for MIMO-SAR |
| title_fullStr | Channel Phase Error Compensation for MIMO-SAR |
| title_full_unstemmed | Channel Phase Error Compensation for MIMO-SAR |
| title_short | Channel Phase Error Compensation for MIMO-SAR |
| title_sort | channel phase error compensation for mimo sar |
| url | http://dx.doi.org/10.1155/2014/798673 |
| work_keys_str_mv | AT leizhang channelphaseerrorcompensationformimosar AT yunkaideng channelphaseerrorcompensationformimosar AT robertwang channelphaseerrorcompensationformimosar |