Development of a Doppler Asymmetric Spatial Heterodyne Spectrometer for Measuring Upper Atmospheric Winds

Details Development of a Doppler Asymmetric Spatial Heterodyne Spectrometer for Measuring Upper Atmospheric Winds Development of a Doppler Asymmetric Spatial Heterodyne Spectrometer for Measuring Upper Atmospheric Winds

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa53a1251b&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SA53A-1251

Physics

[0310] Atmospheric Composition And Structure / Airglow And Aurora, [3334] Atmospheric Processes / Middle Atmosphere Dynamics, [3394] Atmospheric Processes / Instruments And Techniques, [7924] Space Weather / Forecasting

Scientific paper

The global distribution of upper atmospheric winds is one of the most important data products currently unavailable to the upper atmospheric and space community due to the difficulty of making such measurements from space platforms. We discuss recent progress in increasing the technical readiness level of a Doppler Asymmetric Spatial Heterodyne (DASH) spectrometer for the measurement of upper atmospheric winds. A space flight prototype instrument is in the process of being built and tested to show DASH can successfully measure simulated Doppler winds in a space like environment. DASH is a modified Spatial Heterodyne Spectrometer (SHS), a relatively new type of Fourier transform spectrometer (FTS) which requires no scanning mechanical components, can be built in a compact monolithic configuration, and achieves the same throughput as the best FTS instruments currently known. The main advantages of the DASH optical technique are its robustness, relatively compact size, and ability to measure multiple emission lines (including calibration lines) simultaneously, thus making it an ideal candidate instrument for future Aeronomy space flight missions.

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