Feasibility study for spaceborne compact FTS and preliminary test results of laboratory model

Takahiro Kawashima; Akihiko Kuze; Shigetaka Mori; Makoto Suzuki; Yasuhiro Sasano; Hideaki Nakajima; Martin Chamberland

doi:10.1117/12.372677

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6 December 1999 Feasibility study for spaceborne compact FTS and preliminary test results of laboratory model

Takahiro Kawashima, Akihiko Kuze, Shigetaka Mori, Makoto Suzuki, Yasuhiro Sasano, Hideaki Nakajima, Martin Chamberland

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Proceedings Volume 3759, Infrared Spaceborne Remote Sensing VII; (1999) https://doi.org/10.1117/12.372677
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

A laboratory model of the space borne compact FTS was manufactured and tested. This type of compact FTS with medium spectral resolution (approximately 0.8 cm^-1) and high spectral scan rate (approximately 10 Hz) is suitable for the observation of the vertical distribution of atmospheric constituents, especially for the observation of solar occultation. The rapid vertical velocity of tangent points requires a high spectral scan rate of the instrument. One of the candidates of platforms is the International Space Station (ISS). The results of a sensitivity study show that a moderate spectral resolution of approximately 1 cm^-1 is sufficient for measuring vertical distributions of the trace gases with a measurement error less than 10%. The laboratory model is based on the Bomem/MR series with balanced rotary scan action and a frictionless flex blade at the center of rotation. For data sampling, a diode laser is utilized instead of a He-Ne gas laser. This technique provides the compactness and longevity in FTS needed for the satellite borne system. For this instrument, a vibrational environment test was conducted and it was proved to be well-balanced and to be a stable structure with a high resonance frequency. This paper also proposes a space borne interferometer.

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Takahiro Kawashima, Akihiko Kuze, Shigetaka Mori, Makoto Suzuki, Yasuhiro Sasano, Hideaki Nakajima, and Martin Chamberland "Feasibility study for spaceborne compact FTS and preliminary test results of laboratory model", Proc. SPIE 3759, Infrared Spaceborne Remote Sensing VII, (6 December 1999); https://doi.org/10.1117/12.372677

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