An In-Orbit Radiometric Calibration Method of the Geostationary Ocean Color Imager

被引：32

作者：

Kang, Geumsil ^{[1
]}

Coste, Pierre ^{[2
]}

Youn, Heongsik ^{[1
]}

Faure, Francois ^{[2
]}

Choi, Seongbong ^{[1
]}

机构：

[1] Korea Aerosp Res Inst, Program Off Commun Ocean & Meteorol Satellite, Taejon 305333, South Korea

[2] European Aeronaut Def & Space ASTRIUM, F-31402 Toulouse 4, France

来源：

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2010年 / 48卷 / 12期

关键词：

Communication; Ocean; and Meteorological Satellite (COMS); Geostationary Ocean Color Imager (GOCI); nonlinear radiometric model; solar calibration;

D O I：

10.1109/TGRS.2010.2050329

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The Geostationary Ocean Color Imager (GOCI) has been developed for the first time to provide multispectral data which is useful to detect, monitor, and predict short-term changes of coastal ocean environment around the Korean Peninsula from a geostationary platform. In this paper, an in-orbit solar calibration method for GOCI is introduced. Based on the radiometric model of GOCI, solar calibration method using onboard calibration devices has been constructed. A nonlinear radiometric model has been validated using test results obtained during ground tests. The gain parameters of the GOCI radiometric model will be continually updated by the in-orbit solar calibration. The GOCI is equipped with two onboard calibration devices: Solar Diffuser (SD) and Diffuser Aging Monitoring Device (DAMD). The SD, which is located in front of a pointing mirror covering full aperture of the GOCI, is used for calibrating end-to-end radiometric response. The DAMD, which covers partial aperture, detects a potential degradation of the SD.

引用

页码：4322 / 4328

页数：7

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IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2010, 48 (01) :535-546

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