Scattering Mechanism Extraction by a Modified Cloude-Pottier Decomposition for Dual Polarization SAR
Dual polarization is a typical operational mode of polarimetric synthetic aperture radar (SAR). However, few studies have considered the scattering mechanism extraction of dual-polarization SARs. A modified Cloude-Pottier decomposition is proposed to investigate the performance of the scattering mec...
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-06-01
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| Series: | Remote Sensing |
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| Online Access: | http://www.mdpi.com/2072-4292/7/6/7447 |
| _version_ | 1819125432174247936 |
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| author | Kefeng Ji Yonghui Wu |
| author_facet | Kefeng Ji Yonghui Wu |
| author_sort | Kefeng Ji |
| collection | DOAJ |
| description | Dual polarization is a typical operational mode of polarimetric synthetic aperture radar (SAR). However, few studies have considered the scattering mechanism extraction of dual-polarization SARs. A modified Cloude-Pottier decomposition is proposed to investigate the performance of the scattering mechanism extraction of dual-polarization SARs. It is theoretically demonstrated that only HH-VV SAR can discriminate the three canonical scattering mechanisms from an isotropic surface, horizontal dipole, and isotropic dihedral. Various experiments are conducted using 21 scenes from real datasets acquired by AIRSAR, Convair-580 SAR, EMISAR, E-SAR, Pi-SAR, and RADARSAT-2. Division of the dual-polarization H-α plane is experimentally obtained. The lack of cross-polarization induces the diffusion of scattering mechanisms and their overlap in the HH-VV H-α plane. However, the performance of HH-VV SAR for extracting scattering mechanisms is acceptable. Thus, HH-VV SAR is a suitable alternative to full-polarization SAR in certain cases. Meanwhile, the extraction performance of the other two dual-polarization SARs is badly degraded due to the lack of co-polarization. Therefore, HH-HV and HV-VV SARs cannot effectively extract the scattering mechanisms in the H-α plane. |
| first_indexed | 2024-12-22T07:40:02Z |
| format | Article |
| id | doaj.art-00f52fd5f3c94734a60d0aa99b168092 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-12-22T07:40:02Z |
| publishDate | 2015-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-00f52fd5f3c94734a60d0aa99b1680922022-12-21T18:33:45ZengMDPI AGRemote Sensing2072-42922015-06-01767447747010.3390/rs70607447rs70607447Scattering Mechanism Extraction by a Modified Cloude-Pottier Decomposition for Dual Polarization SARKefeng Ji0Yonghui Wu1College of Electronics Science and Engineering, National University of Defense Technology, Changsha 410073, ChinaEarly Warning Academy, Wuhan 430019, ChinaDual polarization is a typical operational mode of polarimetric synthetic aperture radar (SAR). However, few studies have considered the scattering mechanism extraction of dual-polarization SARs. A modified Cloude-Pottier decomposition is proposed to investigate the performance of the scattering mechanism extraction of dual-polarization SARs. It is theoretically demonstrated that only HH-VV SAR can discriminate the three canonical scattering mechanisms from an isotropic surface, horizontal dipole, and isotropic dihedral. Various experiments are conducted using 21 scenes from real datasets acquired by AIRSAR, Convair-580 SAR, EMISAR, E-SAR, Pi-SAR, and RADARSAT-2. Division of the dual-polarization H-α plane is experimentally obtained. The lack of cross-polarization induces the diffusion of scattering mechanisms and their overlap in the HH-VV H-α plane. However, the performance of HH-VV SAR for extracting scattering mechanisms is acceptable. Thus, HH-VV SAR is a suitable alternative to full-polarization SAR in certain cases. Meanwhile, the extraction performance of the other two dual-polarization SARs is badly degraded due to the lack of co-polarization. Therefore, HH-HV and HV-VV SARs cannot effectively extract the scattering mechanisms in the H-α plane.http://www.mdpi.com/2072-4292/7/6/7447polarimetrydual polarizationsynthetic aperture radar (SAR)scattering mechanismtarget decomposition |
| spellingShingle | Kefeng Ji Yonghui Wu Scattering Mechanism Extraction by a Modified Cloude-Pottier Decomposition for Dual Polarization SAR Remote Sensing polarimetry dual polarization synthetic aperture radar (SAR) scattering mechanism target decomposition |
| title | Scattering Mechanism Extraction by a Modified Cloude-Pottier Decomposition for Dual Polarization SAR |
| title_full | Scattering Mechanism Extraction by a Modified Cloude-Pottier Decomposition for Dual Polarization SAR |
| title_fullStr | Scattering Mechanism Extraction by a Modified Cloude-Pottier Decomposition for Dual Polarization SAR |
| title_full_unstemmed | Scattering Mechanism Extraction by a Modified Cloude-Pottier Decomposition for Dual Polarization SAR |
| title_short | Scattering Mechanism Extraction by a Modified Cloude-Pottier Decomposition for Dual Polarization SAR |
| title_sort | scattering mechanism extraction by a modified cloude pottier decomposition for dual polarization sar |
| topic | polarimetry dual polarization synthetic aperture radar (SAR) scattering mechanism target decomposition |
| url | http://www.mdpi.com/2072-4292/7/6/7447 |
| work_keys_str_mv | AT kefengji scatteringmechanismextractionbyamodifiedcloudepottierdecompositionfordualpolarizationsar AT yonghuiwu scatteringmechanismextractionbyamodifiedcloudepottierdecompositionfordualpolarizationsar |