An enhanced spectral diversity coregistration method for dual-polarimetric Sentinel-1A/B TOPS data
Sentinel-1A/B data are crucial for retrieving numerical information about surface phenomena and processes. Coregistration of terrain observation by progressive scans (TOPS) data is a critical step in its application. TOPS data must be fundamentally co-registered with an accuracy of 0.001 pixels. How...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2023-09-01
|
| Series: | Geodesy and Geodynamics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674984723000204 |
| _version_ | 1797672786214256640 |
|---|---|
| author | Nan Fang Xingjun Luo Peng Shen Lei Xie Guoming Liu Feixiang Wei Kun Jiang Wenbin Xu |
| author_facet | Nan Fang Xingjun Luo Peng Shen Lei Xie Guoming Liu Feixiang Wei Kun Jiang Wenbin Xu |
| author_sort | Nan Fang |
| collection | DOAJ |
| description | Sentinel-1A/B data are crucial for retrieving numerical information about surface phenomena and processes. Coregistration of terrain observation by progressive scans (TOPS) data is a critical step in its application. TOPS data must be fundamentally co-registered with an accuracy of 0.001 pixels. However, various decorrelation factors due to natural vegetation and seasonal effects affect the coregistration accuracy of TOPS data. This paper proposed an enhanced spectral diversity coregistration method for dual-polarimetric (PolESD) Sentinel-1A/B TOPS data. The PolESD method suppresses speckle noise based on a unified non-local framework in dual-pol Synthetic Aperture Radar (SAR), and extracts the phase of the optimal polarization channel from the denoised polarimetric interferometric coherency matrix. Compared with the traditional ESD method developed for single-polarization data, the PolESD method can obtain more accurate coherence and phase and get more pixels for azimuth-offset estimation. In bare areas covered with low vegetation, the number of pixels selected by PolESD is more than the Boxcar method. It can also correct misregistration more effectively and eliminate phase jumps in the burst edge. Therefore, PolESD will help improve the application of TOPS data in low-coherence scenarios. |
| first_indexed | 2024-03-11T21:35:15Z |
| format | Article |
| id | doaj.art-dd07b76f9cdc4a0b89281182be63a4d7 |
| institution | Directory Open Access Journal |
| issn | 1674-9847 |
| language | English |
| last_indexed | 2024-03-11T21:35:15Z |
| publishDate | 2023-09-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Geodesy and Geodynamics |
| spelling | doaj.art-dd07b76f9cdc4a0b89281182be63a4d72023-09-27T04:42:09ZengKeAi Communications Co., Ltd.Geodesy and Geodynamics1674-98472023-09-01145431437An enhanced spectral diversity coregistration method for dual-polarimetric Sentinel-1A/B TOPS dataNan Fang0Xingjun Luo1Peng Shen2Lei Xie3Guoming Liu4Feixiang Wei5Kun Jiang6Wenbin Xu7Lab of Volcano and Earthquake Research, School of Geosciences and Info-Physics, Central South University, Changsha 410083, ChinaLab of Volcano and Earthquake Research, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China; Corresponding author.Lab of Volcano and Earthquake Research, School of Geosciences and Info-Physics, Central South University, Changsha 410083, ChinaLab of Volcano and Earthquake Research, School of Geosciences and Info-Physics, Central South University, Changsha 410083, ChinaJilin Changbaishan Volcano National Observation and Research Station, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaInstitute of Geology, China Earthquake Administration, Beijing 100029, ChinaLab of Volcano and Earthquake Research, School of Geosciences and Info-Physics, Central South University, Changsha 410083, ChinaLab of Volcano and Earthquake Research, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China; Corresponding author.Sentinel-1A/B data are crucial for retrieving numerical information about surface phenomena and processes. Coregistration of terrain observation by progressive scans (TOPS) data is a critical step in its application. TOPS data must be fundamentally co-registered with an accuracy of 0.001 pixels. However, various decorrelation factors due to natural vegetation and seasonal effects affect the coregistration accuracy of TOPS data. This paper proposed an enhanced spectral diversity coregistration method for dual-polarimetric (PolESD) Sentinel-1A/B TOPS data. The PolESD method suppresses speckle noise based on a unified non-local framework in dual-pol Synthetic Aperture Radar (SAR), and extracts the phase of the optimal polarization channel from the denoised polarimetric interferometric coherency matrix. Compared with the traditional ESD method developed for single-polarization data, the PolESD method can obtain more accurate coherence and phase and get more pixels for azimuth-offset estimation. In bare areas covered with low vegetation, the number of pixels selected by PolESD is more than the Boxcar method. It can also correct misregistration more effectively and eliminate phase jumps in the burst edge. Therefore, PolESD will help improve the application of TOPS data in low-coherence scenarios.http://www.sciencedirect.com/science/article/pii/S1674984723000204CoregistrationTerrain observation by progressive scans (TOPS)Enhanced spectral diversityDual-polarization |
| spellingShingle | Nan Fang Xingjun Luo Peng Shen Lei Xie Guoming Liu Feixiang Wei Kun Jiang Wenbin Xu An enhanced spectral diversity coregistration method for dual-polarimetric Sentinel-1A/B TOPS data Geodesy and Geodynamics Coregistration Terrain observation by progressive scans (TOPS) Enhanced spectral diversity Dual-polarization |
| title | An enhanced spectral diversity coregistration method for dual-polarimetric Sentinel-1A/B TOPS data |
| title_full | An enhanced spectral diversity coregistration method for dual-polarimetric Sentinel-1A/B TOPS data |
| title_fullStr | An enhanced spectral diversity coregistration method for dual-polarimetric Sentinel-1A/B TOPS data |
| title_full_unstemmed | An enhanced spectral diversity coregistration method for dual-polarimetric Sentinel-1A/B TOPS data |
| title_short | An enhanced spectral diversity coregistration method for dual-polarimetric Sentinel-1A/B TOPS data |
| title_sort | enhanced spectral diversity coregistration method for dual polarimetric sentinel 1a b tops data |
| topic | Coregistration Terrain observation by progressive scans (TOPS) Enhanced spectral diversity Dual-polarization |
| url | http://www.sciencedirect.com/science/article/pii/S1674984723000204 |
| work_keys_str_mv | AT nanfang anenhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT xingjunluo anenhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT pengshen anenhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT leixie anenhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT guomingliu anenhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT feixiangwei anenhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT kunjiang anenhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT wenbinxu anenhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT nanfang enhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT xingjunluo enhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT pengshen enhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT leixie enhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT guomingliu enhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT feixiangwei enhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT kunjiang enhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata AT wenbinxu enhancedspectraldiversitycoregistrationmethodfordualpolarimetricsentinel1abtopsdata |