New approach to sea surface wind retrieval from GNSS-R measurements

Author

Park, Hyuk ; Valencia, Enric ; Rodriguez-Alvarez, Nereida ; Bosch-Lluis, Xavier ; Ramos-Perez, Isaac ; Camps, Adriano

Author_Institution

Dept. of Signal Theor. & Commun., Univ. Politec. de Catalunya (UPC), Barcelona, Spain

fYear

2011

fDate

24-29 July 2011

Firstpage

1469

Lastpage

1472

Abstract

So far, GNSS-R studies on sea surface wind retrieval from Delay-Doppler Maps (DDM) have focused on the best fitting of the model to the measurements. This paper proposes a new approach to retrieve the sea surface wind using DDM deconvolution. The proposed method is based on the direct restoration of scattering coefficients from two measured DDMs. Using the restored scattering coefficient images, the sea surface slope is estimated, and eventually the wind speed is retrieved from the sea surface slope. This paper presents the performance of the proposed method with the simulation results, and the advantages of the method.

Keywords

Doppler effect; deconvolution; geophysical image processing; image retrieval; ocean waves; reflectometry; satellite navigation; seawater; wind; DDM deconvolution; GNSS-R measurement; delay Doppler map; image scattering coefficient; sea surface slope; sea surface wind retrieval; wind speed; Image restoration; Remote sensing; Scattering; Sea measurements; Sea surface; Surface roughness; Wind speed; DDM deconvolution; GNSS-R; ocean wind retrieval;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International

Conference_Location

Vancouver, BC

ISSN

2153-6996

Print_ISBN

978-1-4577-1003-2

Type

conf

DOI

10.1109/IGARSS.2011.6049344

Filename

6049344