정지궤도해색위성 자료를 위한 대기보정 및 BRDF 보정 방법 연구

Title
정지궤도해색위성 자료를 위한 대기보정 및 BRDF 보정 방법 연구
Alternative Title
BRDF and atmospheric correction for the GOCI
Author(s)
민지은; 유주형; 한희정; 산무감; 안유환
KIOST Author(s)
Ryu, Joo Hyung(유주형)
Publication Year
2009-12-10
Abstract
The standard atmospheric correction (SAC) algorithm designed for the CASE-I water area (open ocean) turn out to be unsuccessful for the CASE-II water area (Korean coastal ocean). So new atmospheric correction method for the turbid water is required for the Geostationary Ocean Color Imager (GOCI). Additionally geostationary ocean satellite, unlike other sun-synchronous polar-orbit satellites, will be able to take image data for a large region in many times during a day, almost every hour. In the case of a geostationary satellite, target region and satellite position are fixed but the location of sun is changed always. So the ocean signal power of one given specific target point is depended on time. In this study, we developed new atmospheric correction and the signal correction method using Bidirectional Reflectance Distribution Function (BRDF) for the GOCI data. For the new atmospheric correction, we use modified version of the Spectral Shape Matching Method (SSMM) previously developed by Ahn and Shanmugam (2004). And for the BRDF correction, one signal value of selected pixel point of target region of GOCI would be set up a standard, and the ratio of all remained pixel point can be calculated. This relative ratio is bidirectional factor, and the result of modeling of spatiotemporal variation of bidirectional factor is shown in this study.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/29114
Bibliographic Citation
The 6th Japan-Korea Workshop on OCEAN COLOR REMOTE SENSING, pp.30, 2009
Publisher
KORDI & Nagoya University
Type
Conference
Language
English
Publisher
KORDI & Nagoya University
Related Researcher
Research Interests

Coastal Remote Sensing,RS based Marine Surveillance System,GOCI Series Operation,연안 원격탐사,원격탐사기반 해양감시,천리안해양관측위성 운영

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