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TitleRCM polarimetric SAR for enhanced ship detection and classification
AuthorTouzi, R; Vachon, P W
SourceCanadian Journal of Remote Sensing vol. 41, issue 5, 2015 p. 473-484, https://doi.org/10.1080/07038992.2015.1110010
Year2015
Alt SeriesEarth Sciences Sector, Contribution Series 20150423
PublisherInforma UK Limited
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceBritish Columbia; Western offshore region
NTS92B; 92G; 92F
AreaStrait of Georgia; Vancouver
Lat/Long WENS-126.0000 -123.0000 50.5000 48.7500
Subjectsremote sensing; satellite imagery; radar imagery; RADARSAT-2; Automatic Identification System (AIS; degree of polarization (DoP); degree of depolarization (DoD); ship detection; polarimetric data
Illustrationssatellite images; graphs; tables; photographs
ProgramMethodology, Remote Sensing Science
Released2016 02 05
AbstractThe RADARSAT Constellation Mission (RCM), which involves three small SAR satellites flying in a constellation configuration, will be equipped with fully polarimetric (FP) capabilities in addition to single-polarization (HH, HV, VV), conventional (HH-HV and VV-VH) and hybrid (i.e., Compact) dual-polarization. In this paper, the added value of polarimetric SAR information for enhanced ship detection is demonstrated using polarimetric RADARSAT-2 (RS2) data collected over vessels (validated with Automatic Identification System (AIS) data) in the Strait of Georgia, near Vancouver, Canada. It is shown that the excursion (?p) of the degree of polarization (DoP) provides a significant increase in ship-sea contrast in comparison with conventional (i.e., scalar) single channel polarizations (HH, HV, VV) and Compact. ?p, which is a measure of the variation of the DoP with transmit antenna polarization, performs better than Compact intensities and degree of depolarization (DoD) promoted recently for ship detection. The unique potential of FP for ship classification is also demonstrated. An efficient combination of successive wide swath ScanSAR and FP, which fully exploits the RCM rapid revisit capability, is considered for operational ship detection and classification.
Summary(Plain Language Summary, not published)
The RADARSAT Constellation Mission (RCM), which is an evolution of the RADARSAT Program, includes three identical Earth observation satellites. Each satellite is equipped with a Synthetic Aperture Radar (SAR) with fully polarimetric capabilities in addition to single-polarization (HH, HV, VV), dual-polarization (HH-HV, VV-VH, and HH-VV) and hybrid (i.e., Compact). Ship detection supporting national security and fisheries monitoring, and interception of polluting vessels are among the priorities of the RCM. The three-satellite RCM configuration will provide on average daily coverage of Canada's maritime approaches and frequent coverage of Canada's land. In this study, conducted jointly with the Defence Research and Development Canada, the added value of polarimetric RCM for ship detection and classification is demonstrated. An efficient combination of successive single-(or dual) polarization wide swath ScanSAR and polarimetric modes, which exploits the RCM rapid revisit capability at high latitudes, is proposed for operational ship detection and classification.
GEOSCAN ID297569