On the Estimation of Polarimetric Parameters for Oil Slick Feature Detection From Hybrid Pol and Derived Pseudo Quad Pol Sar Data

Priya, S. Hari; Kumari, E. V. S. Sita; Prasad, A. V. V.

doi:10.5194/isprs-archives-xlii-5-629-2018

Cited by 3 publications

(2 citation statements)

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“…For example, RISAT-1 HP measurements collected during the NOrwegian Radar oil Spill Experiment in 2015 (NORSE2015) jointly operated by UiT, The Arctic University of Norway, Jet Propulsion Laboratory (JPL)/National Aeronautics and Space Administration (NASA) are good cases. NORSE2015 was designed for systematic collection of X-, C-, and L-band SAR data over oil emulsions with known oil fraction and quantity [17][18][19][20][21]. The cross-correlation between RH and RV [17], the dispersion and the evolution of the oil spill [18,19] have been studied with actual HP observations.…”

Section: Introductionmentioning

confidence: 99%

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Retrieval of Oil–Water Mixture Ratio at Ocean Surface Using Compact Polarimetry Synthetic Aperture Radar

Perrie

2019

Remote Sensing

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The oil–water mixture ratio for oil spills on the ocean surface is an important parameter for volume estimation of oil spills, response strategy for the oil spills, cleanup operations, and remediation planning for the impacts on wildlife. Hybrid-polarized (HP) mode compact polarization (CP) synthetic aperture radar (SAR) imagery will soon be available with the launch of the RADARSAT Constellation Mission. The advantage of the proposed new SAR system is that CP images will have wider swath and shorter revisit time compared to quad-polarization (QP) images, which are presently available from space-borne and air-borne SAR. We present a methodology to retrieve the oil–water mixture ratio at the ocean surface using CP SAR imagery. We emulated the HP mode of CP SAR image using Uninhabited Aerial Vehicle SAR (UAVSAR) L band observations collected on June 23rd 2010 over the site of the Deep Water Horizon drilling rig. The gap between elements ratio of CP SAR covariance matrix and that of QP SAR Sinclair matrix is bridged. Numerical optimization and look up table methods are used to relate the oil–water mixture ratio to elements of the covariance matrix for the HP data backscatter. The mixture ratio estimates determined from the ratio of diagonal elements of the covariance matrix for HP mode CP data are compared with results retrieved from the co-polarization ratio from the original QP SAR observations. Results from the proposed methodology for SAR images captured in the HP mode of CP data are shown to compare favourably to observed in situ data of the mixture ratios.

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Section: Introductionmentioning

confidence: 99%

“…The cross-correlation between RH and RV [17], the dispersion and the evolution of the oil spill [18,19] have been studied with actual HP observations. The Stokes parameters and polarimetric characteristics used to detect oil spills were proposed based on RISAT-1 HP observations [20,21].…”

Section: Introductionmentioning

confidence: 99%