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Proceedings Paper

Unconstrained ocean wave spectra retrieval from SAR SLC imagery
Author(s): Jingsong Yang; He Wang; Rong Zhang; Xiaoyan Chen; Weigen Huang
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Paper Abstract

A new approach for directional ocean wave spectra retrieval from synthetic aperture radar (SAR) single look complex (SLC) imagery is presented. This method takes the advantages of both Engen's cross spectra method and Lyzenga's unconstrained inversion method. It consists of following three main steps: (1) split-look processing and cross-spectra estimation of SLC imagery; (2) unconstrained iteration of ocean wave spectra with 180° direction ambiguity from real part of cross-spectra; (3) remove the 180° ambiguity from imaginary part of cross-spectra. Envisat ASAR data are used in cases studies. Wavelength, wave direction and significant wave height (SWH) are also derived from retrieved ocean wave spectra. Case studies with comparisons show that this method reaches better results than the one used by ESA. It can avoid the inherent error of the latter.

Paper Details

Date Published: 2 December 2008
PDF: 7 pages
Proc. SPIE 7154, Microwave Remote Sensing of the Atmosphere and Environment VI, 71540D (2 December 2008); doi: 10.1117/12.804858
Show Author Affiliations
Jingsong Yang, Second Institute of Oceanography (China)
He Wang, Second Institute of Oceanography (China)
Rong Zhang, Second Institute of Oceanography (China)
Xiaoyan Chen, Second Institute of Oceanography (China)
Weigen Huang, Second Institute of Oceanography (China)

Published in SPIE Proceedings Vol. 7154:
Microwave Remote Sensing of the Atmosphere and Environment VI
Azita Valinia; Peter H. Hildebrand; Seiho Uratsuka, Editor(s)

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