Bulletin of the Korean Space Science Society (한국우주과학회:학술대회논문집(한국우주과학회보))
- 2009.10a
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- Pages.28.4-29
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- 2009
Radiative transfer analysis for Amon-Ra instrument
- Seong, Se-Hyun (Space Optics Laboratory, Yonsei University) ;
- Ryu, Dong-Ok (Space Optics Laboratory, Yonsei University) ;
- Lee, Jae-Min (Oxford University) ;
- Hong, Jin-Suk (I&A Technology) ;
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Kim, Seong-Hui
(Korea Aerospace Research Institute) ;
- Yoon, Jee-Yeon (LIG Nex1 Co. Ltd) ;
- Park, Won-Hyun (College of Optical Sciences, University of Arizona) ;
- Lee, Han-Shin (McDonald Observatory) ;
- Park, Jong-Soo (Astrodynamics & Control Laboratory, Yonsei University) ;
- Yu, Ji-Woong (Astrodynamics & Control Laboratory, Yonsei University) ;
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Kim, Sug-Whan
(Space Optics Laboratory, Yonsei University)
- Published : 2009.10.15
Abstract
The 'Amon-Ra' instrument of the proposed 'EARTHSHINE' satellite is a dual (i.e. imaging and energy) channel instrument for monitoring the total solar irradiance (TSI) and the Earth's irradiance at around the L1 halo orbit. Earlier studies for this instrument include, but not limited to, design and construction of breadboard Amon-Ra imaging channel, stray light suppression and system performance computation using Integrated Ray Tracing (IRT) technique. The Amon-Ra instrument is required to produce 0.3% in uncertainty for both Sunlight and Earthlight measurement. In this study, we report accurate estimation of the output electric signal derived from the orbital variation of radiant exitance from the Sun and the Earth arriving at the aperture and detector plane of the Amon-Ra. For this, orbital irradiance are computed analytically first and then confirmed by simulation using Integrated Ray Tracing (IRT) model. Specially, the results show the arriving power at the bolometer detector surface is
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