SAR Image Modulation by Ocean Current Variations Induced by Underwater

Title
SAR Image Modulation by Ocean Current Variations Induced by Underwater
Author(s)
홍단비; 양찬수; Kazuo
KIOST Author(s)
Yang, Chan Su(양찬수)
Publication Year
2014-10-22
Abstract
This paper presents the quantitative analyses of radar backscatter from sea surface in the presence of varying currents associated with internal waves and bottom topography. The waveheight spectrum of sea surface perturbed by slowly-varying surface current is computed using the first-order solution of the action balance equation which describes the hydrodynamic interaction between the surface waves and varying current. The backscatter radar cross section (RCS) is then computed using the small perturbation method (SPM) and the results are compared with the RADARSAT-1 images of internal waves in the East/Japan Sea, and also with the ENVISAT-ASAR image modulated by varying surface currentsin the shallow waters of Yellow Sea in the west coast of the Korean Peninsula. On a whole the agreement is fairly good,but some discrepancy has been observed and the reasons are discussed. surface current is computed using the first-order solution of the action balance equation which describes the hydrodynamic interaction between the surface waves and varying current. The backscatter radar cross section (RCS) is then computed using the small perturbation method (SPM) and the results are compared with the RADARSAT-1 images of internal waves in the East/Japan Sea, and also with the ENVISAT-ASAR image modulated by varying surface currentsin the shallow waters of Yellow Sea in the west coast of the Korean Peninsula. On a whole the agreement is fairly good,but some discrepancy has been observed and the reasons are discussed.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25939
Bibliographic Citation
2014 ICSANE, pp.1, 2014
Publisher
IEICE
Type
Conference
Language
English
Publisher
IEICE
Related Researcher
Research Interests

Satellite Oceanography,Marine Safety & Security,Remote Sensing,위성해양학,해양 안전 및 보안,원격탐사

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse