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12 July 2019 Optical design and performance analysis of a CubeSat-sized limb sounder utilizing a spatial heterodyne spectrometer for the measurement of mesospheric temperature
Martin Kaufmann, Friedhelm Olschewski, Klaus Mantel, Oliver Wroblowski, Jilin Liu, Michael Deiml, Qiuyu Chen, Ulrike Lembke, Saroj Mihalik, Brian Solheim, Gordon Shepherd, Ralf Koppmann, Martin Riese
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Proceedings Volume 11180, International Conference on Space Optics — ICSO 2018; 111803P (2019) https://doi.org/10.1117/12.2536052
Event: International Conference on Space Optics - ICSO 2018, 2018, Chania, Greece
Abstract
A highly miniaturized limb sounder for the observation of the O2 A-band to derive temperatures in the mesosphere and lower thermosphere is presented. The instrument consists of a monolithic spatial heterodyne spectrometer, which is able to resolve the rotational structure of that band. The SHS operates at a Littrow wavelength of 762 nm with a resolving power in the order of 10.000. Complemented by a front optics with an acceptance angle of less than ±1 degree and a detector optics, the entire optical system fits into a volume of about 1.5 liters. This allows this instrument to be flown on a three or six unit CubeSat. In this paper, we introduce the optical design and computer simulations on the expected performance of the instrument. The laboratory characterization of a prototype instrument, which has been built on university level, and the lessons learned are discussed.
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Martin Kaufmann, Friedhelm Olschewski, Klaus Mantel, Oliver Wroblowski, Jilin Liu, Michael Deiml, Qiuyu Chen, Ulrike Lembke, Saroj Mihalik, Brian Solheim, Gordon Shepherd, Ralf Koppmann, and Martin Riese "Optical design and performance analysis of a CubeSat-sized limb sounder utilizing a spatial heterodyne spectrometer for the measurement of mesospheric temperature", Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 111803P (12 July 2019); https://doi.org/10.1117/12.2536052
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KEYWORDS
Sensors
Spectroscopy
Temperature metrology
Heterodyning
Point spread functions
Spatial frequencies
Diffraction gratings
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