Investigation of C-Band SAR Polarimetry for Mapping a High-Tidal Coastal Environment in Northern Canada
Synthetic Aperture Radar (SAR) has been used in characterizing intertidal zones along northern Canadian coastlines. RADARSAT-2, with its full polarimetric information, has been considered for monitoring these vulnerable ecosystems and helping enhance the navigational safety of these waters. The RADA...
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ftdoajarticles:oai:doaj.org/article:65ace19faae34647a25b8906d673b043 2023-05-15T18:31:21+02:00 Investigation of C-Band SAR Polarimetry for Mapping a High-Tidal Coastal Environment in Northern Canada Khalid Omari René Chenier Ridha Touzi Mesha Sagram 2020-06-01T00:00:00Z https://doi.org/10.3390/rs12121941 https://doaj.org/article/65ace19faae34647a25b8906d673b043 EN eng MDPI AG https://www.mdpi.com/2072-4292/12/12/1941 https://doaj.org/toc/2072-4292 doi:10.3390/rs12121941 2072-4292 https://doaj.org/article/65ace19faae34647a25b8906d673b043 Remote Sensing, Vol 12, Iss 1941, p 1941 (2020) SAR RADARSAT-2 RCM compact polarimetry intertidal coastal zone random forest Science Q article 2020 ftdoajarticles https://doi.org/10.3390/rs12121941 2022-12-31T15:30:36Z Synthetic Aperture Radar (SAR) has been used in characterizing intertidal zones along northern Canadian coastlines. RADARSAT-2, with its full polarimetric information, has been considered for monitoring these vulnerable ecosystems and helping enhance the navigational safety of these waters. The RADARSAT Constellation Mission (RCM) will ensure data continuity with three identical SAR satellites orbiting together, providing superior revisit capabilities. The three satellites are equipped with multiple configurations, including single-polarization (HH, HV, VV), conventional (HH-HV, VV-VH, and HH-VV), hybrid (i.e., compact) dual polarization, and fully polarimetric (FP) modes. This study investigates the potential of the compact polarimetric (CP) mode for mapping an intertidal zone located at Tasiujaq village on the southwest shore of Ungava Bay, Quebec. Simulated RCM data were generated using FP RADARSAT-2 images collected over the study site in 2016. Commonly used tools for CP analysis include Raney m-delta classification and the hybrid dual polarizations RH-RV (where the transmitter is right-circular and the receivers are horizontal and vertical linear polarizations) and RR-RL (where the transmitter is right circular and the receivers are right-circular and left-circular polarizations). The potential of CP is compared with single, conventional dual-pol, and FP. The Freeman–Durden and Touzi discriminators are used for FP analysis. The random forest classifier is used as a classification approach due to its well-documented performance compared to other classifiers. The results suggest that the hybrid compact (RR-RL and RH-RV) dual polarizations provide encouraging separability capacities with overall accuracies of 61% and 60.7%, respectively, although they do not perform as well as conventional dual-pol HH-HV (64.4%). On the other hand, the CP polarimetric m-delta decomposition generated slightly less accurate classification results with an overall accuracy of approximately 62% compared to the FP Freeman–Durden ... Article in Journal/Newspaper Tasiujaq Ungava Bay Directory of Open Access Journals: DOAJ Articles Canada Tasiujaq ENVELOPE(-69.928,-69.928,58.696,58.696) Ungava Bay ENVELOPE(-67.489,-67.489,59.498,59.498) Remote Sensing 12 12 1941 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
SAR RADARSAT-2 RCM compact polarimetry intertidal coastal zone random forest Science Q |
spellingShingle |
SAR RADARSAT-2 RCM compact polarimetry intertidal coastal zone random forest Science Q Khalid Omari René Chenier Ridha Touzi Mesha Sagram Investigation of C-Band SAR Polarimetry for Mapping a High-Tidal Coastal Environment in Northern Canada |
topic_facet |
SAR RADARSAT-2 RCM compact polarimetry intertidal coastal zone random forest Science Q |
description |
Synthetic Aperture Radar (SAR) has been used in characterizing intertidal zones along northern Canadian coastlines. RADARSAT-2, with its full polarimetric information, has been considered for monitoring these vulnerable ecosystems and helping enhance the navigational safety of these waters. The RADARSAT Constellation Mission (RCM) will ensure data continuity with three identical SAR satellites orbiting together, providing superior revisit capabilities. The three satellites are equipped with multiple configurations, including single-polarization (HH, HV, VV), conventional (HH-HV, VV-VH, and HH-VV), hybrid (i.e., compact) dual polarization, and fully polarimetric (FP) modes. This study investigates the potential of the compact polarimetric (CP) mode for mapping an intertidal zone located at Tasiujaq village on the southwest shore of Ungava Bay, Quebec. Simulated RCM data were generated using FP RADARSAT-2 images collected over the study site in 2016. Commonly used tools for CP analysis include Raney m-delta classification and the hybrid dual polarizations RH-RV (where the transmitter is right-circular and the receivers are horizontal and vertical linear polarizations) and RR-RL (where the transmitter is right circular and the receivers are right-circular and left-circular polarizations). The potential of CP is compared with single, conventional dual-pol, and FP. The Freeman–Durden and Touzi discriminators are used for FP analysis. The random forest classifier is used as a classification approach due to its well-documented performance compared to other classifiers. The results suggest that the hybrid compact (RR-RL and RH-RV) dual polarizations provide encouraging separability capacities with overall accuracies of 61% and 60.7%, respectively, although they do not perform as well as conventional dual-pol HH-HV (64.4%). On the other hand, the CP polarimetric m-delta decomposition generated slightly less accurate classification results with an overall accuracy of approximately 62% compared to the FP Freeman–Durden ... |
format |
Article in Journal/Newspaper |
author |
Khalid Omari René Chenier Ridha Touzi Mesha Sagram |
author_facet |
Khalid Omari René Chenier Ridha Touzi Mesha Sagram |
author_sort |
Khalid Omari |
title |
Investigation of C-Band SAR Polarimetry for Mapping a High-Tidal Coastal Environment in Northern Canada |
title_short |
Investigation of C-Band SAR Polarimetry for Mapping a High-Tidal Coastal Environment in Northern Canada |
title_full |
Investigation of C-Band SAR Polarimetry for Mapping a High-Tidal Coastal Environment in Northern Canada |
title_fullStr |
Investigation of C-Band SAR Polarimetry for Mapping a High-Tidal Coastal Environment in Northern Canada |
title_full_unstemmed |
Investigation of C-Band SAR Polarimetry for Mapping a High-Tidal Coastal Environment in Northern Canada |
title_sort |
investigation of c-band sar polarimetry for mapping a high-tidal coastal environment in northern canada |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/rs12121941 https://doaj.org/article/65ace19faae34647a25b8906d673b043 |
long_lat |
ENVELOPE(-69.928,-69.928,58.696,58.696) ENVELOPE(-67.489,-67.489,59.498,59.498) |
geographic |
Canada Tasiujaq Ungava Bay |
geographic_facet |
Canada Tasiujaq Ungava Bay |
genre |
Tasiujaq Ungava Bay |
genre_facet |
Tasiujaq Ungava Bay |
op_source |
Remote Sensing, Vol 12, Iss 1941, p 1941 (2020) |
op_relation |
https://www.mdpi.com/2072-4292/12/12/1941 https://doaj.org/toc/2072-4292 doi:10.3390/rs12121941 2072-4292 https://doaj.org/article/65ace19faae34647a25b8906d673b043 |
op_doi |
https://doi.org/10.3390/rs12121941 |
container_title |
Remote Sensing |
container_volume |
12 |
container_issue |
12 |
container_start_page |
1941 |
_version_ |
1766215129594068992 |