Polarimetric Channel Imbalance Evaluation of GF-3 SAR Products by Bragg-Like Targets
Polarimetric calibration is crucial to ensure the accuracy and reliability of subsequent application results. Since Gaofen-3(GF-3) has been providing polarimetric Synthetic Aperture Radar images for six years, it is necessary to monitor the polarimetric performance by estimating the residual channel...
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
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| Online Access: | https://ieeexplore.ieee.org/document/10360238/ |
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| author | Hanglan Guo Xingjie Zhao Xiuqing Liu Weidong Yu |
| author_facet | Hanglan Guo Xingjie Zhao Xiuqing Liu Weidong Yu |
| author_sort | Hanglan Guo |
| collection | DOAJ |
| description | Polarimetric calibration is crucial to ensure the accuracy and reliability of subsequent application results. Since Gaofen-3(GF-3) has been providing polarimetric Synthetic Aperture Radar images for six years, it is necessary to monitor the polarimetric performance by estimating the residual channel imbalance. In this article, we proposed an improved algorithm based on zero helix component of Bragg-like targets. The method can provide transmitting and receiving channel imbalances results and can be applied to the large-scale polarimetric evaluation. We verified the effectiveness of the algorithm and assessed the residual channel imbalance in the multibeam polarimetric products of GF-3 quad-polarimetric Stripmap from 2019 to 2023. The experiments indicate that the residual channel imbalance changes in the same strip observation and the polarimetric performance remains stable. The evaluation conclusions can be used as references for subsequent application of GF-3 polarimetric products. |
| format | Article |
| id | doaj-art-91b86da1c5b74fd8a9f838393cf3a10f |
| institution | DOAJ |
| issn | 1939-1404 2151-1535 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
| spelling | doaj-art-91b86da1c5b74fd8a9f838393cf3a10f2025-08-20T02:52:59ZengIEEEIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing1939-14042151-15352024-01-01172115213210.1109/JSTARS.2023.334298710360238Polarimetric Channel Imbalance Evaluation of GF-3 SAR Products by Bragg-Like TargetsHanglan Guo0https://orcid.org/0009-0002-7106-3933Xingjie Zhao1https://orcid.org/0000-0003-0149-1254Xiuqing Liu2https://orcid.org/0000-0002-1885-0885Weidong Yu3https://orcid.org/0000-0002-7803-6084Department of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaDepartment of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaDepartment of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaDepartment of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaPolarimetric calibration is crucial to ensure the accuracy and reliability of subsequent application results. Since Gaofen-3(GF-3) has been providing polarimetric Synthetic Aperture Radar images for six years, it is necessary to monitor the polarimetric performance by estimating the residual channel imbalance. In this article, we proposed an improved algorithm based on zero helix component of Bragg-like targets. The method can provide transmitting and receiving channel imbalances results and can be applied to the large-scale polarimetric evaluation. We verified the effectiveness of the algorithm and assessed the residual channel imbalance in the multibeam polarimetric products of GF-3 quad-polarimetric Stripmap from 2019 to 2023. The experiments indicate that the residual channel imbalance changes in the same strip observation and the polarimetric performance remains stable. The evaluation conclusions can be used as references for subsequent application of GF-3 polarimetric products.https://ieeexplore.ieee.org/document/10360238/Bragg-like targetschannel imbalancesGF-3helixSAR |
| spellingShingle | Hanglan Guo Xingjie Zhao Xiuqing Liu Weidong Yu Polarimetric Channel Imbalance Evaluation of GF-3 SAR Products by Bragg-Like Targets IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing Bragg-like targets channel imbalances GF-3 helix SAR |
| title | Polarimetric Channel Imbalance Evaluation of GF-3 SAR Products by Bragg-Like Targets |
| title_full | Polarimetric Channel Imbalance Evaluation of GF-3 SAR Products by Bragg-Like Targets |
| title_fullStr | Polarimetric Channel Imbalance Evaluation of GF-3 SAR Products by Bragg-Like Targets |
| title_full_unstemmed | Polarimetric Channel Imbalance Evaluation of GF-3 SAR Products by Bragg-Like Targets |
| title_short | Polarimetric Channel Imbalance Evaluation of GF-3 SAR Products by Bragg-Like Targets |
| title_sort | polarimetric channel imbalance evaluation of gf 3 sar products by bragg like targets |
| topic | Bragg-like targets channel imbalances GF-3 helix SAR |
| url | https://ieeexplore.ieee.org/document/10360238/ |
| work_keys_str_mv | AT hanglanguo polarimetricchannelimbalanceevaluationofgf3sarproductsbybraggliketargets AT xingjiezhao polarimetricchannelimbalanceevaluationofgf3sarproductsbybraggliketargets AT xiuqingliu polarimetricchannelimbalanceevaluationofgf3sarproductsbybraggliketargets AT weidongyu polarimetricchannelimbalanceevaluationofgf3sarproductsbybraggliketargets |