21 December 2000 Submillimeter limb-emission sounder JEM/SMILES aboard the Space Station
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Abstract
A submillimeter limb-emission sounder, that is to be aboard the Japanese Experiment Module (JEM, dubbed as KIBO) at the International Space Station, has been designed. This payload, Superconducting Submillimeter-wave Limb-emission Sounder (SMILES), is aimed at global mappings of stratospheric trace gases by means of the most sensitive submillimeter receiver ever operated in space. Such sensitivity is ascribed to a Superconductor-Insulator- Superconductor (SIS) mixer, which is operated at 4.5 K in a dedicated cryostat combined with a mechanical cooler. SMILES will observe ozone-depletion-related molecules such as ClO, Hcl, HO2, HNO3, BrO and O3 in the frequency bands at 624.32-626.32 GHz and 649.12-650.32 GHz. A scanning antenna will cover tangent altitudes from 10 to 60 km in every 53 seconds, while tracing the latitudes form 38 S to 65 N along its orbit. This global coverage makes SMILES a useful tool of observing the low- and mid- latitudinal areas as well as the Arctic peripheral region. The molecular emissions will be detected by two units of acousto-optic spectrometers (AOS), each of which has coverage of 1.2 GHz with a resolution of 1.8 MHz. This high-resolution spectroscopy will allow us to detect weak emission lines attributing to less-abundant species.
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Junji Inatani, Junji Inatani, Hiroyuki Ozeki, Hiroyuki Ozeki, Ryouta Satoh, Ryouta Satoh, Toshiyuki Nishibori, Toshiyuki Nishibori, Naomi Ikeda, Naomi Ikeda, Yasunori Fujii, Yasunori Fujii, Takashi Nakajima, Takashi Nakajima, Yukiei Iida, Yukiei Iida, Teruhito Iida, Teruhito Iida, Ken'ichi Kikuchi, Ken'ichi Kikuchi, Takeshi Miura, Takeshi Miura, Harunobu Masuko, Harunobu Masuko, Takeshi Manabe, Takeshi Manabe, Satoshi Ochiai, Satoshi Ochiai, Masumichi Seta, Masumichi Seta, Yoshihisa Irimajiri, Yoshihisa Irimajiri, Yasuko Kasai, Yasuko Kasai, Makoto Suzuki, Makoto Suzuki, Tomoko Shirai, Tomoko Shirai, Sho Tsujimaru, Sho Tsujimaru, Kazuo Shibasaki, Kazuo Shibasaki, Masato Shiotani, Masato Shiotani, } "Submillimeter limb-emission sounder JEM/SMILES aboard the Space Station", Proc. SPIE 4152, Microwave Remote Sensing of the Atmosphere and Environment II, (21 December 2000); doi: 10.1117/12.410604; https://doi.org/10.1117/12.410604
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