A NEW DISTRIBUTED TARGET EXTRACTION METHOD FOR POLARIMETRIC SAR CALIBRATION
Polarimetric calibration is one of the preprocessing steps in the quantitative processing of Polarimetric synthetic aperture radar (PolSAR) data, and its accuracy will affect subsequent applications. At present, the polarimetric calibration method based on distributed targets is widely used, and thi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2022-10-01
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| Series: | ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | https://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/X-3-W1-2022/31/2022/isprs-annals-X-3-W1-2022-31-2022.pdf |
| _version_ | 1811197487446228992 |
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| author | B. Chi J. Zhang L. Lu S. Yang G. Huang |
| author_facet | B. Chi J. Zhang L. Lu S. Yang G. Huang |
| author_sort | B. Chi |
| collection | DOAJ |
| description | Polarimetric calibration is one of the preprocessing steps in the quantitative processing of Polarimetric synthetic aperture radar (PolSAR) data, and its accuracy will affect subsequent applications. At present, the polarimetric calibration method based on distributed targets is widely used, and this kind of method needs to extract distributed targets that satisfy certain scattering characteristics as the calibration reference ground object samples before calibrating. Therefore, the extraction accuracy of distributed targets has a great influence on the accuracy of polarimetric calibration methods based on such targets. Therefore, this paper proposes a new distribution target extraction method, which is based on the idea of KS hypothesis testing, and uses the homogeneity of the pixels in the window to determine whether it is a distribution target. To verify the effectiveness of the method, the X-band airborne PolSAR images are used as the data of the polarimetric calibration experiment. Experiments show that, compared with other extraction methods, our method can not only ensure the extraction accuracy of distributed targets, but also further improve the accuracy of polarimetric calibration. |
| first_indexed | 2024-04-12T01:14:40Z |
| format | Article |
| id | doaj.art-a2bd3f9d9ebe45b483eb9c93e192b0f9 |
| institution | Directory Open Access Journal |
| issn | 2194-9042 2194-9050 |
| language | English |
| last_indexed | 2024-04-12T01:14:40Z |
| publishDate | 2022-10-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| spelling | doaj.art-a2bd3f9d9ebe45b483eb9c93e192b0f92022-12-22T03:54:00ZengCopernicus PublicationsISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences2194-90422194-90502022-10-01X-3-W1-2022313610.5194/isprs-annals-X-3-W1-2022-31-2022A NEW DISTRIBUTED TARGET EXTRACTION METHOD FOR POLARIMETRIC SAR CALIBRATIONB. Chi0J. Zhang1L. Lu2S. Yang3G. Huang4Jiangsu Key Laboratory of Resources and Environmental Information Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaDepartment of Land Surveying and Mapping, Ministry of Natural Resources, Beijing 100812, ChinaChinese Academy of Surveying & Mapping, Beijing 100830, ChinaChinese Academy of Surveying & Mapping, Beijing 100830, ChinaChinese Academy of Surveying & Mapping, Beijing 100830, ChinaPolarimetric calibration is one of the preprocessing steps in the quantitative processing of Polarimetric synthetic aperture radar (PolSAR) data, and its accuracy will affect subsequent applications. At present, the polarimetric calibration method based on distributed targets is widely used, and this kind of method needs to extract distributed targets that satisfy certain scattering characteristics as the calibration reference ground object samples before calibrating. Therefore, the extraction accuracy of distributed targets has a great influence on the accuracy of polarimetric calibration methods based on such targets. Therefore, this paper proposes a new distribution target extraction method, which is based on the idea of KS hypothesis testing, and uses the homogeneity of the pixels in the window to determine whether it is a distribution target. To verify the effectiveness of the method, the X-band airborne PolSAR images are used as the data of the polarimetric calibration experiment. Experiments show that, compared with other extraction methods, our method can not only ensure the extraction accuracy of distributed targets, but also further improve the accuracy of polarimetric calibration.https://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/X-3-W1-2022/31/2022/isprs-annals-X-3-W1-2022-31-2022.pdf |
| spellingShingle | B. Chi J. Zhang L. Lu S. Yang G. Huang A NEW DISTRIBUTED TARGET EXTRACTION METHOD FOR POLARIMETRIC SAR CALIBRATION ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| title | A NEW DISTRIBUTED TARGET EXTRACTION METHOD FOR POLARIMETRIC SAR CALIBRATION |
| title_full | A NEW DISTRIBUTED TARGET EXTRACTION METHOD FOR POLARIMETRIC SAR CALIBRATION |
| title_fullStr | A NEW DISTRIBUTED TARGET EXTRACTION METHOD FOR POLARIMETRIC SAR CALIBRATION |
| title_full_unstemmed | A NEW DISTRIBUTED TARGET EXTRACTION METHOD FOR POLARIMETRIC SAR CALIBRATION |
| title_short | A NEW DISTRIBUTED TARGET EXTRACTION METHOD FOR POLARIMETRIC SAR CALIBRATION |
| title_sort | new distributed target extraction method for polarimetric sar calibration |
| url | https://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/X-3-W1-2022/31/2022/isprs-annals-X-3-W1-2022-31-2022.pdf |
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