Gas monitoring onboard ISS using FTIR spectroscopy

Michael Gisi; Armin Stettner; Roland Seurig; Atle Honne; Johannes Witt; Pierre Rebeyre

doi:10.1117/12.2268146

26 June 2017 Gas monitoring onboard ISS using FTIR spectroscopy

Michael Gisi, Armin Stettner, Roland Seurig, Atle Honne, Johannes Witt, Pierre Rebeyre

Author Affiliations +

Proceedings Volume 10329, Optical Measurement Systems for Industrial Inspection X; 103292R (2017) https://doi.org/10.1117/12.2268146
Event: SPIE Optical Metrology, 2017, Munich, Germany

Abstract

In the confined, enclosed environment of a spacecraft, the air quality must be monitored continuously in order to safeguard the crew's health. For this reason, OHB builds the ANITA2 (Analysing Interferometer for Ambient Air) technology demonstrator for trace gas monitoring onboard the International Space Station (ISS). The measurement principle of ANITA2 is based on the Fourier Transform Infrared (FTIR) technology with dedicated gas analysis software from the Norwegian partner SINTEF. This combination proved to provide high sensitivity, accuracy and precision for parallel measurements of 33 trace gases simultaneously onboard ISS by the precursor instrument ANITA1. The paper gives a technical overview about the opto-mechanical components of ANITA2, such as the interferometer, the reference Laser, the infrared source and the gas cell design and a quick overview about the gas analysis. ANITA2 is very well suited for measuring gas concentrations specifically but not limited to usage onboard spacecraft, as no consumables are required and measurements are performed autonomously. ANITA2 is a programme under the contract of the European Space Agency, and the air quality monitoring system is a stepping stone into the future, as a precursor system for manned exploration missions.

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Michael Gisi, Armin Stettner, Roland Seurig, Atle Honne, Johannes Witt, and Pierre Rebeyre "Gas monitoring onboard ISS using FTIR spectroscopy", Proc. SPIE 10329, Optical Measurement Systems for Industrial Inspection X, 103292R (26 June 2017); https://doi.org/10.1117/12.2268146

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