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TitleShip detection using polarimetric RADARSAT-2 data
AuthorTouzi, R; Hurley, J; Vachon, P W; Staples, G
Source33rd Canadian Symposium on Remote Sensing, abstracts; by Canadian Symposium on Remote Sensing; 2012 p. 45 Open Access logo Open Access
LinksOnline - En ligne
LinksAbstracts (PDF, 1.22 MB)
Alt SeriesEarth Sciences Sector, Contribution Series 20140084
Meeting33rd Canadian Symposium on Remote Sensing; Ottawa; CA; June 11-14, 2012
Mediaon-line; digital
File formatpdf
ProvinceBritish Columbia
NTS92B; 92F; 92G; 92K
Lat/Long WENS-126.0000 -122.0000 51.0000 48.0000
Subjectsgeophysics; remote sensing; satellite imagery; analytical methods
AbstractRADARSAT-2 (RS2) is equipped with operational polarimetric capabilities at multiple incidence angles. Ship orientation (with respect to the azimuth direction) is an important parameter that can influence ship signatures as a function of the SAR polarization. Use of fully-polarimetric RS2 data should permit selection of the transmitting and receiving polarizations that maximize the ship-to-sea contrast. In this study, wave polarization anisotropy, which was previously validated for ship detection using airborne Convair-580 SAR data, is used for ship polarization information extraction from RS2. The RS2 data were acquired over the Strait of Georgia (nearVancouver) and theStraitofGibraltar. TheGibraltardata were collected by DRDC Ottawa as joint RS2/AIS acquisitions. Automatic Identification System (AIS) is used as a valuable source of ship validation data. The Strait of Georgia RS2 data were collected by MDA and Canadian Coast Guard data are used for ship validation. This data set, which includes small and large ships viewed at various orientations and incidence angles, permits an excellent demonstration of RS2's polarimetric capabilities. A quantitative assessment of the added-value of polarimetric RS2 for ship detection is conducted in terms of the probability of false alarm and the detection of ships as a function of their size, orientation, and the RS2 incidence angle. Finally, the potential of polarimetric RS2 for ship recognition is demonstrated using the symmetric scattering coherence method. This method, which can extract a unique ship signature based upon ship scatterers with symmetric signatures, was previously validated using Convair-580 SAR data.

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