Three-year operation of in-orbit radiometric calibration for geostationary ocean color imager

Title
Three-year operation of in-orbit radiometric calibration for geostationary ocean color imager
Author(s)
조성익; 안기범; 오은송; 박영제
KIOST Author(s)
Cho, Seong Ick(조성익)Park, Young Je(박영제)
Publication Year
2014-09-24
Abstract
Geostationary Ocean Color Imager (GOCI) onboard
COMS(Communication, Ocean and Meteorological Satellite)
spacecraft is the first spaceborne imager for ocean color
remote sensing in Geostationary Earth Orbit (GEO). Over
the three years, GOCI has been in on-orbit normal operation
since its launch in June 2010. For the fulfillment of ocean
color monitoring mission, GOCI equips 8 spectral bands. In
visible wavelength region from 40 2nm to 685 nm, 6 spectral
bands are implemented on GOCI with the bandwidth of 20
nm (for B1 ~B5) or 10 nm (for B6, central wavelength at 680
nm). Two spectral bands located in NIR wavelength region
with band center at 745nm and 865 nm are mainly used for
the atmospheric correction. Thanks to the satellite location in
geostationary orbit, GOCI can acquire the image from Earth with staring capture method with 2D CMOS FPA (Focal Plane
Array). Instantaneous Field of View(IFOV) of GOCI is about
700 km x 700 km with 500 m spatial resolution over the
center of the coverage area (130˚E, 36˚N). Because the userrequired
observation coverage area is 2,500 km x 2,500 km
which includes the region of Korean Peninsula, East China, and
Japan, 4 x 4 slot image acquisitions which corresponds to IFOV
are required for the image acquisition for the coverage area
including overlap region among slot images. In-orbit calibration
activities of GOCI have mainly been performed using onboard
SolarOCI has been in on-orbit normal operation
since its launch in June 2010. For the fulfillment of ocean
color monitoring mission, GOCI equips 8 spectral bands. In
visible wavelength region from 40 2nm to 685 nm, 6 spectral
bands are implemented on GOCI with the bandwidth of 20
nm (for B1 ~B5) or 10 nm (for B6, central wavelength at 680
nm). Two spectral bands located in NIR wavelength region
with band center at 745nm and 865 nm are mainly used for
the atmospheric correction. Thanks to the satellite location in
geostationary orbit, GOCI can acquire the image from Earth with staring capture method with 2D CMOS FPA (Focal Plane
Array). Instantaneous Field of View(IFOV) of GOCI is about
700 km x 700 km with 500 m spatial resolution over the
center of the coverage area (130˚E, 36˚N). Because the userrequired
observation coverage area is 2,500 km x 2,500 km
which includes the region of Korean Peninsula, East China, and
Japan, 4 x 4 slot image acquisitions which corresponds to IFOV
are required for the image acquisition for the coverage area
including overlap region among slot images. In-orbit calibration
activities of GOCI have mainly been performed using onboard
Solar
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/26021
Bibliographic Citation
SPIE Remote Sensing 2014, pp.64, 2014
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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