Assessment of RISAT-1 and Radarsat-2 for Sea Ice Observation from Hybrid-Polarity Perspective
Source at http://dx.doi.org/10.3390/rs9111088 Utilizing several Synthetic Aperture Radar (SAR) missions will provide a data set with higher temporal resolution. It is of great importance to understand the difference between various available sensors and polarization modes and to consider how to homo...
Published in: | Remote Sensing |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI
2017
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/11692 https://doi.org/10.3390/rs9111088 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/11692 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/11692 2023-05-15T16:18:08+02:00 Assessment of RISAT-1 and Radarsat-2 for Sea Ice Observation from Hybrid-Polarity Perspective Espeseth, Martine Brekke, Camilla Johansson, Malin 2017-10-25 https://hdl.handle.net/10037/11692 https://doi.org/10.3390/rs9111088 eng eng MDPI Remote Sensing Norges forskningsråd: 233896 Norges forskningsråd: 237906 info:eu-repo/grantAgreement/RCN/NORRUSS/233896/NORWAY/DetectionAndCharacterizationOfAnthropogenicOilPollutionInTheBarentsSeaBySyntheticApertureRadar// info:eu-repo/grantAgreement/RCN/SFI/233896/NORWAY/CentreforIntegratedRemoteSensingandForecastingforArcticOperations(CIRFA)// Espeseth M, Brekke C, Johansson M. Assessment of RISAT-1 and Radarsat-2 for Sea Ice Observation from Hybrid-Polarity Perspective. Remote Sensing. 2017;9(11) FRIDAID 1507896 doi:10.3390/rs9111088 2072-4292 https://hdl.handle.net/10037/11692 openAccess VDP::Teknologi: 500::Informasjons- og kommunikasjonsteknologi: 550 VDP::Technology: 500::Information and communication technology: 550 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Elektromagnetisme akustikk optikk: 434 VDP::Mathematics and natural science: 400::Physics: 430::Electromagnetism acoustics optics: 434 Journal article Tidsskriftartikkel Peer reviewed 2017 ftunivtroemsoe https://doi.org/10.3390/rs9111088 2021-06-25T17:55:27Z Source at http://dx.doi.org/10.3390/rs9111088 Utilizing several Synthetic Aperture Radar (SAR) missions will provide a data set with higher temporal resolution. It is of great importance to understand the difference between various available sensors and polarization modes and to consider how to homogenize the data sets for a following combined analysis. In this study, a uniform and consistent analysis across different SAR missions is carried out. Three pairs of overlapping hybrid- and full-polarimetric C-band SAR scenes from the Radar Imaging Satellite-1 (RISAT-1) and Radarsat-2 satellites are used. The overlapping Radarsat-2 and RISAT-1 scenes are taken close in time, with a relatively similar incidence angle covering sea ice in the Fram Strait and Northeast Greenland in September 2015. The main objective of this study is to identify the similarities and dissimilarities between a simulated and a real hybrid-polarity (HP) SAR system. The similarities and dissimilarities between the two sensors are evaluated using 13 HP features. The results indicate a similar separability between the sea ice types identified within the real HP system in RISAT-1 and the simulated HP system from Radarsat-2. The HP features that are sensitive to surface scattering and depolarization due to volume scattering showed great potential for separating various sea ice types. A subset of features (the second parameter in the Stokes vector, the ratio between the HP intensity coefficients, and the as angle) were affected by the non-circularity property of the transmitted wave in the simulated HP system across all the scene pairs. Overall, the best features, showing high separability between various sea ice types and which are invariant to the non-circularity property of the transmitted wave, are the intensity coefficients from the right-hand circular transmit and the linear horizontal receive channel and the right-hand circular on both the transmit and the receive channel, and the first parameter in the Stokes vector. Article in Journal/Newspaper Fram Strait Greenland Sea ice University of Tromsø: Munin Open Research Archive Greenland Remote Sensing 9 11 1088 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Teknologi: 500::Informasjons- og kommunikasjonsteknologi: 550 VDP::Technology: 500::Information and communication technology: 550 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Elektromagnetisme akustikk optikk: 434 VDP::Mathematics and natural science: 400::Physics: 430::Electromagnetism acoustics optics: 434 |
spellingShingle |
VDP::Teknologi: 500::Informasjons- og kommunikasjonsteknologi: 550 VDP::Technology: 500::Information and communication technology: 550 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Elektromagnetisme akustikk optikk: 434 VDP::Mathematics and natural science: 400::Physics: 430::Electromagnetism acoustics optics: 434 Espeseth, Martine Brekke, Camilla Johansson, Malin Assessment of RISAT-1 and Radarsat-2 for Sea Ice Observation from Hybrid-Polarity Perspective |
topic_facet |
VDP::Teknologi: 500::Informasjons- og kommunikasjonsteknologi: 550 VDP::Technology: 500::Information and communication technology: 550 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Elektromagnetisme akustikk optikk: 434 VDP::Mathematics and natural science: 400::Physics: 430::Electromagnetism acoustics optics: 434 |
description |
Source at http://dx.doi.org/10.3390/rs9111088 Utilizing several Synthetic Aperture Radar (SAR) missions will provide a data set with higher temporal resolution. It is of great importance to understand the difference between various available sensors and polarization modes and to consider how to homogenize the data sets for a following combined analysis. In this study, a uniform and consistent analysis across different SAR missions is carried out. Three pairs of overlapping hybrid- and full-polarimetric C-band SAR scenes from the Radar Imaging Satellite-1 (RISAT-1) and Radarsat-2 satellites are used. The overlapping Radarsat-2 and RISAT-1 scenes are taken close in time, with a relatively similar incidence angle covering sea ice in the Fram Strait and Northeast Greenland in September 2015. The main objective of this study is to identify the similarities and dissimilarities between a simulated and a real hybrid-polarity (HP) SAR system. The similarities and dissimilarities between the two sensors are evaluated using 13 HP features. The results indicate a similar separability between the sea ice types identified within the real HP system in RISAT-1 and the simulated HP system from Radarsat-2. The HP features that are sensitive to surface scattering and depolarization due to volume scattering showed great potential for separating various sea ice types. A subset of features (the second parameter in the Stokes vector, the ratio between the HP intensity coefficients, and the as angle) were affected by the non-circularity property of the transmitted wave in the simulated HP system across all the scene pairs. Overall, the best features, showing high separability between various sea ice types and which are invariant to the non-circularity property of the transmitted wave, are the intensity coefficients from the right-hand circular transmit and the linear horizontal receive channel and the right-hand circular on both the transmit and the receive channel, and the first parameter in the Stokes vector. |
format |
Article in Journal/Newspaper |
author |
Espeseth, Martine Brekke, Camilla Johansson, Malin |
author_facet |
Espeseth, Martine Brekke, Camilla Johansson, Malin |
author_sort |
Espeseth, Martine |
title |
Assessment of RISAT-1 and Radarsat-2 for Sea Ice Observation from Hybrid-Polarity Perspective |
title_short |
Assessment of RISAT-1 and Radarsat-2 for Sea Ice Observation from Hybrid-Polarity Perspective |
title_full |
Assessment of RISAT-1 and Radarsat-2 for Sea Ice Observation from Hybrid-Polarity Perspective |
title_fullStr |
Assessment of RISAT-1 and Radarsat-2 for Sea Ice Observation from Hybrid-Polarity Perspective |
title_full_unstemmed |
Assessment of RISAT-1 and Radarsat-2 for Sea Ice Observation from Hybrid-Polarity Perspective |
title_sort |
assessment of risat-1 and radarsat-2 for sea ice observation from hybrid-polarity perspective |
publisher |
MDPI |
publishDate |
2017 |
url |
https://hdl.handle.net/10037/11692 https://doi.org/10.3390/rs9111088 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Fram Strait Greenland Sea ice |
genre_facet |
Fram Strait Greenland Sea ice |
op_relation |
Remote Sensing Norges forskningsråd: 233896 Norges forskningsråd: 237906 info:eu-repo/grantAgreement/RCN/NORRUSS/233896/NORWAY/DetectionAndCharacterizationOfAnthropogenicOilPollutionInTheBarentsSeaBySyntheticApertureRadar// info:eu-repo/grantAgreement/RCN/SFI/233896/NORWAY/CentreforIntegratedRemoteSensingandForecastingforArcticOperations(CIRFA)// Espeseth M, Brekke C, Johansson M. Assessment of RISAT-1 and Radarsat-2 for Sea Ice Observation from Hybrid-Polarity Perspective. Remote Sensing. 2017;9(11) FRIDAID 1507896 doi:10.3390/rs9111088 2072-4292 https://hdl.handle.net/10037/11692 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.3390/rs9111088 |
container_title |
Remote Sensing |
container_volume |
9 |
container_issue |
11 |
container_start_page |
1088 |
_version_ |
1766004271030992896 |