In-orbit imaging and radiometric performance prediction for flight model geostationary ocean color imager

Soomin Jeong, Yukyeong Jeong, Dongok Ryu, Seonghui Kim, Seongick Cho, Jinsuk Hong, Sug Whan Kim, Heong Sik Youn

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

The Geostationary Ocean Colour Imager (GOCI) is a visible band ocean colour instrument onboard the Communication, Ocean, and Meteorological Satellite (COMS) scheduled to be in operation from early 2010. The instrument is designed to monitor ocean water environments around the Korean peninsula in high spatial and temporal resolutions. We report a new imaging and radiometric performance prediction model specifically designed for GOCI. The model incorporates the Sun as light source, about 4000km x 4000km section of the Earth surrounding the Korean peninsula and the GOCI optical system into a single ray tracing environment in real scale. Specially, the target Earth section is constructed using high resolution coastal line data, and consists of land and ocean surfaces with reflectivity data representing their constituents including vegetation and chlorophyll concentration. The GOCI instrument in the IRT model is constructed as an optical system with realistic surface characteristics including wave front error, reflectivity, absorption, transmission and scattering properties. We then used Monte Carlo based ray tracing computation along the whole optical path starting from the Sun to the final detector plane, for simultaneous imaging and radiometric performance verification for a fixed solar zenith angle. This was then followed by simulation of red-tide evolution detection and their radiance estimation, in accordance with the in-orbit operation sequence. The simulation results prove that the GOCI flight model is capable of detecting both image and radiance originated from the key ocean phenomena including red tide. The model details and computational process are discussed with implications to other earth observation instruments.

Original languageEnglish
Title of host publicationEarth Observing Systems XIV
DOIs
Publication statusPublished - 2009 Nov 2
EventEarth Observing Systems XIV - San Diego, CA, United States
Duration: 2009 Aug 32009 Aug 5

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7452
ISSN (Print)0277-786X

Other

OtherEarth Observing Systems XIV
CountryUnited States
CitySan Diego, CA
Period09/8/309/8/5

Fingerprint

Ocean Color
performance prediction
Performance Prediction
Imager
Image sensors
oceans
Orbits
Orbit
Imaging
flight
Color
orbits
color
Imaging techniques
Ocean
Tide
Earth (planet)
Radiance
Ray Tracing
Tides

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Jeong, S., Jeong, Y., Ryu, D., Kim, S., Cho, S., Hong, J., ... Youn, H. S. (2009). In-orbit imaging and radiometric performance prediction for flight model geostationary ocean color imager. In Earth Observing Systems XIV [74520F] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7452). https://doi.org/10.1117/12.825982
Jeong, Soomin ; Jeong, Yukyeong ; Ryu, Dongok ; Kim, Seonghui ; Cho, Seongick ; Hong, Jinsuk ; Kim, Sug Whan ; Youn, Heong Sik. / In-orbit imaging and radiometric performance prediction for flight model geostationary ocean color imager. Earth Observing Systems XIV. 2009. (Proceedings of SPIE - The International Society for Optical Engineering).
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abstract = "The Geostationary Ocean Colour Imager (GOCI) is a visible band ocean colour instrument onboard the Communication, Ocean, and Meteorological Satellite (COMS) scheduled to be in operation from early 2010. The instrument is designed to monitor ocean water environments around the Korean peninsula in high spatial and temporal resolutions. We report a new imaging and radiometric performance prediction model specifically designed for GOCI. The model incorporates the Sun as light source, about 4000km x 4000km section of the Earth surrounding the Korean peninsula and the GOCI optical system into a single ray tracing environment in real scale. Specially, the target Earth section is constructed using high resolution coastal line data, and consists of land and ocean surfaces with reflectivity data representing their constituents including vegetation and chlorophyll concentration. The GOCI instrument in the IRT model is constructed as an optical system with realistic surface characteristics including wave front error, reflectivity, absorption, transmission and scattering properties. We then used Monte Carlo based ray tracing computation along the whole optical path starting from the Sun to the final detector plane, for simultaneous imaging and radiometric performance verification for a fixed solar zenith angle. This was then followed by simulation of red-tide evolution detection and their radiance estimation, in accordance with the in-orbit operation sequence. The simulation results prove that the GOCI flight model is capable of detecting both image and radiance originated from the key ocean phenomena including red tide. The model details and computational process are discussed with implications to other earth observation instruments.",
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Jeong, S, Jeong, Y, Ryu, D, Kim, S, Cho, S, Hong, J, Kim, SW & Youn, HS 2009, In-orbit imaging and radiometric performance prediction for flight model geostationary ocean color imager. in Earth Observing Systems XIV., 74520F, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7452, Earth Observing Systems XIV, San Diego, CA, United States, 09/8/3. https://doi.org/10.1117/12.825982

In-orbit imaging and radiometric performance prediction for flight model geostationary ocean color imager. / Jeong, Soomin; Jeong, Yukyeong; Ryu, Dongok; Kim, Seonghui; Cho, Seongick; Hong, Jinsuk; Kim, Sug Whan; Youn, Heong Sik.

Earth Observing Systems XIV. 2009. 74520F (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7452).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Jeong S, Jeong Y, Ryu D, Kim S, Cho S, Hong J et al. In-orbit imaging and radiometric performance prediction for flight model geostationary ocean color imager. In Earth Observing Systems XIV. 2009. 74520F. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.825982