Utilization of fully polarimetric SAR data for improved measurement of directional ocean wave spectra

Author

Schuler, D.L. ; Lee, J.S. ; Kasilingam, D. ; Pottier, E.

Author_Institution

Div. of Remote Sensing, Naval Res. Lab., Washington, DC, USA

fYear

2005

fDate

2005

Firstpage

55

Abstract

New methods have been investigated which use fully-polarimetric synthetic aperture radar (SAR) image data to measure ocean wave slope spectra. Independent techniques have been developed to measure wave slopes in the orthogonal SAR (azimuth/range) directions. These measurements must still contend with motion-induced nonlinearities in the SAR processing. The methods are, however, physically based, robust, and utilize a parametrically simpler modulation transfer function. NASA/JPL/AiRSAR L-band data from California coastal waters has been used. Wave spectra measured using the new methods are compared with spectra developed using both conventional SAR intensity-based methods and NDBC buoys.

Keywords

ocean waves; oceanographic techniques; radar polarimetry; remote sensing by radar; synthetic aperture radar; AiRSAR L-band data; California coastal waters; JPL; NASA; NDBC buoys; SAR processing; directional ocean wave spectra; fully polarimetric SAR; modulation transfer function; motion-induced nonlinearity; ocean wave slope spectra; orthogonal SAR direction; synthetic aperture radar; Azimuth; Covariance matrix; Laboratories; NASA; Ocean waves; Polarization; Sea measurements; Sea surface; Surface waves; Synthetic aperture radar;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS, 2005. Proceedings of MTS/IEEE

Print_ISBN

0-933957-34-3

Type

conf

DOI

10.1109/OCEANS.2005.1639736

Filename

1639736