Study on the Extraction of Ocean Wind, Wave and Current using SAR

Kang, Moon-Kyung; Park, Yong -Wook; Lee, Moon-Jin; Lee, Hoon-Yol

Journal of Navigation and Port Research 2007;31(1):35-42.
Published online February 28, 2007.

SAR를 이용한 해풍, 파랑, 해류 추출 기법 연구

강문경, 박용욱, 이문진, 이훈열

Study on the Extraction of Ocean Wind, Wave and Current using SAR

Moon-Kyung Kang, Yong -Wook Park, Moon-Jin Lee, Hoon-Yol Lee

Abstract

Recently satellite SAR techniques have become essential observation tools for various ocean phenomena such as wind, wave, and current. The CMOD4 and CMOD-IFR2 models are used to calculate the magnitude of wind at SAR resolution with no directional information Combination of the waue-SAR spectrum analysis and the inter-look cross-spectra techniques provides amplitude and direction of the ocean wave over a square-km sized imagette, The Doppler shift measurement of SAR image yields surface speed of the ocean current along the radar looking direction, again at imagette resolution In this paper we report the development of a SAR Ocean processor (SOP) incorporating all of these techniques. We bace applied the SOP to several RADARSAT-1 images of the coast of Korean peninsula and compared the results with oceanographic data, which showed reliability of spaceborne SAR-based oceanographic research.

Key Words: wave-SAR 변환 Ocean wind;Ocean waue;Ocean current;CMOD4;COMD_IFR2;inter-look cross-spectra;Doppler shift