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Journal of Applied Remote Sensing • Open Access

Marine target detection in quad-pol synthetic aperture radar imagery based on the relative phase of cross-polarized channels
Author(s): Yunhua Wang; Huimin Li; Yanmin Zhang; Lixin Guo

Paper Abstract

A focus on marine target detection in noise corrupted fully polarimetric synthetic aperture radar (SAR) is presented. The property of the relative phase between two cross-polarized channels reveals that the relative phases evaluated within sea surface area or noise corrupted area are widely spread phase angle region [−π,π] due to decorrelation effect; however, the relative phases are concentrated to zero and ±π for real target and its first-order azimuth ambiguities (FOAAs), respectively. Exploiting this physical behavior, the reciprocal of the mean square value of the relative phase (RMSRP) is defined as a new parameter for target detection, and the experiments based on fully polarimetric Radarsat-2 SAR images show that the strong noise and the FOAAs can be effectively suppressed in RMSRP image. Meanwhile, validity of the new parameter for target detection is also verified by two typical Radarsat-2 SAR images, in which targets’ ambiguities and strong noise are present.

Paper Details

Date Published: 29 January 2015
PDF: 11 pages
J. Appl. Rem. Sens. 9(1) 096092 doi: 10.1117/1.JRS.9.096092
Published in: Journal of Applied Remote Sensing Volume 9, Issue 1
Show Author Affiliations
Yunhua Wang, Ocean Univ. of China (China)
Huimin Li, Ocean Univ. of China (China)
Yanmin Zhang, Ocean Univ. of China (China)
First Institute of Oceanography (China)
Lixin Guo, Xidian Univ. (China)

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