FIVE-YEAR OPERATION OF GOCI IN-ORBIT RADIOMETRIC CALIBRATION

Title
FIVE-YEAR OPERATION OF GOCI IN-ORBIT RADIOMETRIC CALIBRATION
Author(s)
조성익; 박영제; 안기범; 오은송
KIOST Author(s)
Cho, Seong Ick(조성익)Park, Young Je(박영제)
Publication Year
2016-09-27
Abstract
The world’s first ocean color remote sensing mission in geostationary orbit, GOCI (Geostationary Ocean Color Imager) aboard on COMS (Communication, Ocean and Meteorological Satellite), is in the status of successful operation over five years since its launch in June 2010. For the practical development in terms of budget and schedule, GOCI implements 2D CMOS FPA (Focal Plane Array) with 2 million pixels (1413 x 1430), which enables image staring capture method with 700km x 700km IFOV (Instantaneous Field of View) and 500m GSD (Ground Sampling Distance) over the center of the coverage area (130˚E, 36˚N), and it corresponds to about 380m GSD over the nadir. GOCI can observe Korea, Japan, and east coast region of China with 4 x 4 slot image acquisitions. One slot image of GOCI is equivalent to IFOV, and size of coverage area with 4 x 4 slot images is 2,500km x 2,500km including overlapped area among adjoined slot images. GOCI equips 8 spectral bands from visible to NIR (402nm ~885nm). In visible wavelength region from 402nm to 685nm, 6 spectral bands are implemented on GOCI with the bandwidth of 20nm (for B1 ~B5) or 10nm (for B6, central wavelength at 680nm). Two spectral bands located in NIR wavelength region with band center at 745nm and 865nm are mainly used for the atmospheric correction.Solar calibration, the method to use Sun as calibration light source, is in-orbit calibration method of GOCI. On-board rs since its launch in June 2010. For the practical development in terms of budget and schedule, GOCI implements 2D CMOS FPA (Focal Plane Array) with 2 million pixels (1413 x 1430), which enables image staring capture method with 700km x 700km IFOV (Instantaneous Field of View) and 500m GSD (Ground Sampling Distance) over the center of the coverage area (130˚E, 36˚N), and it corresponds to about 380m GSD over the nadir. GOCI can observe Korea, Japan, and east coast region of China with 4 x 4 slot image acquisitions. One slot image of GOCI is equivalent to IFOV, and size of coverage area with 4 x 4 slot images is 2,500km x 2,500km including overlapped area among adjoined slot images. GOCI equips 8 spectral bands from visible to NIR (402nm ~885nm). In visible wavelength region from 402nm to 685nm, 6 spectral bands are implemented on GOCI with the bandwidth of 20nm (for B1 ~B5) or 10nm (for B6, central wavelength at 680nm). Two spectral bands located in NIR wavelength region with band center at 745nm and 865nm are mainly used for the atmospheric correction.Solar calibration, the method to use Sun as calibration light source, is in-orbit calibration method of GOCI. On-board
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24598
Bibliographic Citation
SPIE Remote Sensing 2016, pp.167, 2016
Publisher
SPIE
Type
Conference
Language
English
Publisher
SPIE
Related Researcher
Research Interests

Development of Ocean Satellites and Data Analytics,해양위성 및 영상분석 실용화 기술 개발

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