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Geoscientific Instrumentation, Methods and Data Systems An interactive open-access journal of the European Geosciences Union

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https://doi.org/10.5194/gi-2017-50
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
22 Dec 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Geoscientific Instrumentation, Methods and Data Systems (GI).
Mars sub-millimeter sensor on micro-satellite: sensor feasibility study
Richard Larsson1, Yasuko Kasai1, Takeshi Kuroda1, Shigeru Sato1, Hiroyuki Maezawa2, Yutaka Haseagwa3, Toshiyuki Nishibori4, and Shinichi Nakasuka5 1National Institute of Information and Communications Technology, Tokyo, Japan
2Osaka Prefecture University, Osaka, Japan
3Institute of Space and Astronautical Science, Japanese Aerospace Exploration Agency, Tokyo, Japan
4Research and Development Directorate, Japanese Aerospace Exploration Agency, Tokyo, Japan
5Tokyo University, Tokyo, Japan
Abstract. We are planning a mission to Mars using a micro-satellite to carry a sub-millimeter sensor to orbit and have performed a feasibility study to determine what we can measure and to what success. The sensor will measure atmospheric molecular oxygen, water, ozone, and hydrogen peroxide to retrieve their volume mixing ratios and change over time. The sensor will also retrieve the temperature field, the wind field, and the magnetic field at various levels of success. The expected measurement errors for molecular oxygen is below 100 ppmv in limb view below 50 km, with 20 ppmv for near surface measurements. For water in limb-view, the retrieval errors are below 1 ppmv with a detection limit of a few tens of ppbv. For ozone the limits are at 2 ppbv, and for hydrogen peroxide the retrieval limits are in the range of 1 ppbv. In nadir-viewing geometry, the expected errors in the column are worse but not by much since we can keep integrating the signal from the same area for a long time, though the vertical resolution clearly suffers.
Citation: Larsson, R., Kasai, Y., Kuroda, T., Sato, S., Maezawa, H., Haseagwa, Y., Nishibori, T., and Nakasuka, S.: Mars sub-millimeter sensor on micro-satellite: sensor feasibility study, Geosci. Instrum. Method. Data Syst. Discuss., https://doi.org/10.5194/gi-2017-50, in review, 2017.
Richard Larsson et al.
Richard Larsson et al.
Richard Larsson et al.

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Short summary
We are planning a Mars mission. The mission will carry an instrument capable of measuring and mapping molecular oxygen and water in the Martian atmosphere, as well as the temperature, wind, and magnetic field. Water and oxygen are vital parts of the Martian atmospheric chemistry and must be better understood. Using computer simulation results, the paper gives a description of how the measurements will work, some problems we expect to encounter, and the sensitivity of the measurements.
We are planning a Mars mission. The mission will carry an instrument capable of measuring and...
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