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Proceedings Paper

Introduction of SOFIS/FTS calibration system
Author(s): Takahiro Kawashima; Shigetaka Mori; Jun Tanii; Yasuhiro Sasano; Hideaki Nakajima; Tatsuya Yokota; Takafumi Sugita; Akihiko Kuze; Katsunori Waragai
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Paper Abstract

The Solar Occultation FTS for Inclined-orbit Satellite (SOFIS) is a solar occultation Fourier transform spectrometer (FTS), developed by the Ministry of the Environment (MOE) of Japan, that will be onboard the Global Change Observation Mission-A1 (GCOM-A1) satellite. GCOM-A1 will be placed in a 650km non-sun-synchronous orbit, with an inclination angle of 68 deg. SOFIS is the successor of ILAS-II, which will be onboard the Advanced Earth Observing Satellite-II (ADEOS-II). SOFIS measures atmospheric constituent vertical profiles with 0.24 cm-1 spectral resolution in 3-13 μm and 1 km vertical resolution. SOFIS will measure the global distribution of O3, HNO3, NO2, N2O, CH4, H2O, CO2, CFC-11, CFC-12, CIONO2, aerosol extinction, atmospheric pressure, and temperature. SOFIS uses a double-pass dual-pendulum type FTS with diode laser sampling system to reduce the size and weight. Two photo-voltaic (PV) MCT (HgCdTe) detectors and a pulse-tube cooler will achieve high linearity and low-noise performance. In addition, it has a visible (O2, A band) grating spectrometer for pressure and temperature retrieval and a sun-edge sensor for the tangent height position detection. We present the test results of FTS and detector assembly engineering model and describe the SOFIS/FTS calibration system.

Paper Details

Date Published: 18 December 2002
PDF: 8 pages
Proc. SPIE 4818, Infrared Spaceborne Remote Sensing X, (18 December 2002); doi: 10.1117/12.451369
Show Author Affiliations
Takahiro Kawashima, NEC-Toshiba Space Systems (Japan)
Shigetaka Mori, NEC-Toshiba Space Systems (Japan)
Jun Tanii, NEC-Toshiba Space Systems (Japan)
Yasuhiro Sasano, National Institute for Environmental Studies (Japan)
Hideaki Nakajima, National Institute for Environmental Studies (Japan)
Tatsuya Yokota, National Institute for Environmental Studies (Japan)
Takafumi Sugita, National Institute for Environmental Studies (Japan)
Akihiko Kuze, National Space Development Agency of Japan (Japan)
Katsunori Waragai, Matsushita Communication Industrial Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 4818:
Infrared Spaceborne Remote Sensing X
Marija Strojnik; Bjorn F. Andresen, Editor(s)

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