On the Use of Multipolarization Satellite SAR Data for Coastline Extraction in Harsh Coastal Environments: The Case of Solway Firth
This study deals with coastline extraction using multipolarization spaceborne synthetic aperture radar (SAR) imagery acquired over coastal intertidal areas. The latter are very challenging environments where mud flats lead to a large variability of normalized radar cross section, which may trigger a...
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2021-01-01
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doaj-1d70f99fe6e848518219457a849c963c2021-06-03T23:04:31ZengIEEEIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing2151-15352021-01-011424925710.1109/JSTARS.2020.30364589250494On the Use of Multipolarization Satellite SAR Data for Coastline Extraction in Harsh Coastal Environments: The Case of Solway FirthEmanuele Ferrentino0https://orcid.org/0000-0003-0421-6477Andrea Buono1https://orcid.org/0000-0002-5523-7609Ferdinando Nunziata2https://orcid.org/0000-0003-4567-0377Armando Marino3https://orcid.org/0000-0002-4531-3102Maurizio Migliaccio4https://orcid.org/0000-0002-8363-3502Dipartimento di Ingegneria, Università degli Studi di Napoli Parthenope, Napoli, ItalyDipartimento di Ingegneria, Università degli Studi di Napoli Parthenope, Napoli, ItalyDipartimento di Ingegneria, Università degli Studi di Napoli Parthenope, Napoli, ItalyFaculty of Natural Sciences, University of Stirling, Stirling, U.K.Dipartimento di Ingegneria, Università degli Studi di Napoli Parthenope, Napoli, ItalyThis study deals with coastline extraction using multipolarization spaceborne synthetic aperture radar (SAR) imagery acquired over coastal intertidal areas. The latter are very challenging environments where mud flats lead to a large variability of normalized radar cross section, which may trigger a significant number of false edges during the extraction process. The performance of SAR-based coastline extraction methods that rely on a joint combination of multipolarization information (either single- or dual-polarization metrics) and speckle filtering (either local and nonlocal approaches) are analyzed using global positioning system (GPS) samples and colocated SAR imagery collected under different incidence angles. Our test site is an intertidal zone with a wetland (i.e., salt marsh) in the Solway Firth, south-west along the Scottish-English border. Experimental results, obtained processing a pair of RadarSAT-2 full-polarimetric and a pair of Sentinel-1 dual-polarimetric SAR imagery augmented by colocated GPS samples, show that: first, the multipolarization information outperforms the single-polarization counterpart in terms of extraction accuracy; second, among the single-polarization channels, the cross-polarized one performs best; third, both single- and dual-polarization methods perform better when nonlocal speckle filtering is applied; fourth, the joint combination of nonlocal speckle filter and dual-polarization information provides the best accuracy; and finally, the incidence angle plays a role in the extraction accuracy with larger incidence angles resulting in the best performance when dual-polarization metric is used.https://ieeexplore.ieee.org/document/9250494/Coastal areascoastline extractionpolarizationsolway firthsynthetic aperture radar (SAR) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Emanuele Ferrentino Andrea Buono Ferdinando Nunziata Armando Marino Maurizio Migliaccio |
spellingShingle |
Emanuele Ferrentino Andrea Buono Ferdinando Nunziata Armando Marino Maurizio Migliaccio On the Use of Multipolarization Satellite SAR Data for Coastline Extraction in Harsh Coastal Environments: The Case of Solway Firth IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing Coastal areas coastline extraction polarization solway firth synthetic aperture radar (SAR) |
author_facet |
Emanuele Ferrentino Andrea Buono Ferdinando Nunziata Armando Marino Maurizio Migliaccio |
author_sort |
Emanuele Ferrentino |
title |
On the Use of Multipolarization Satellite SAR Data for Coastline Extraction in Harsh Coastal Environments: The Case of Solway Firth |
title_short |
On the Use of Multipolarization Satellite SAR Data for Coastline Extraction in Harsh Coastal Environments: The Case of Solway Firth |
title_full |
On the Use of Multipolarization Satellite SAR Data for Coastline Extraction in Harsh Coastal Environments: The Case of Solway Firth |
title_fullStr |
On the Use of Multipolarization Satellite SAR Data for Coastline Extraction in Harsh Coastal Environments: The Case of Solway Firth |
title_full_unstemmed |
On the Use of Multipolarization Satellite SAR Data for Coastline Extraction in Harsh Coastal Environments: The Case of Solway Firth |
title_sort |
on the use of multipolarization satellite sar data for coastline extraction in harsh coastal environments: the case of solway firth |
publisher |
IEEE |
series |
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
issn |
2151-1535 |
publishDate |
2021-01-01 |
description |
This study deals with coastline extraction using multipolarization spaceborne synthetic aperture radar (SAR) imagery acquired over coastal intertidal areas. The latter are very challenging environments where mud flats lead to a large variability of normalized radar cross section, which may trigger a significant number of false edges during the extraction process. The performance of SAR-based coastline extraction methods that rely on a joint combination of multipolarization information (either single- or dual-polarization metrics) and speckle filtering (either local and nonlocal approaches) are analyzed using global positioning system (GPS) samples and colocated SAR imagery collected under different incidence angles. Our test site is an intertidal zone with a wetland (i.e., salt marsh) in the Solway Firth, south-west along the Scottish-English border. Experimental results, obtained processing a pair of RadarSAT-2 full-polarimetric and a pair of Sentinel-1 dual-polarimetric SAR imagery augmented by colocated GPS samples, show that: first, the multipolarization information outperforms the single-polarization counterpart in terms of extraction accuracy; second, among the single-polarization channels, the cross-polarized one performs best; third, both single- and dual-polarization methods perform better when nonlocal speckle filtering is applied; fourth, the joint combination of nonlocal speckle filter and dual-polarization information provides the best accuracy; and finally, the incidence angle plays a role in the extraction accuracy with larger incidence angles resulting in the best performance when dual-polarization metric is used. |
topic |
Coastal areas coastline extraction polarization solway firth synthetic aperture radar (SAR) |
url |
https://ieeexplore.ieee.org/document/9250494/ |
work_keys_str_mv |
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