Real-fringe DASH interferometer for upper atmospheric wind and temperature observation: concept and simulation

Xiaoyun Fei; Yutao Feng; Qinglan Bai

doi:10.1117/12.2075814

19 February 2015 Real-fringe DASH interferometer for upper atmospheric wind and temperature observation: concept and simulation

Xiaoyun Fei, Yutao Feng, Qinglan Bai

Author Affiliations +

Proceedings Volume 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014); 94492S (2015) https://doi.org/10.1117/12.2075814
Event: The International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference (icPOE 2014), 2014, Xi'an, China

Abstract

Doppler asymmetric spatial heterodyne spectroscopy (DASH) is a new technology for measuring upper atmospheric winds by observing the Doppler shift of atmospheric emission lines from a satellite using a limb viewing geometry. The real-fringe DASH interferometer is a modification of conventional DASH interferometer; it keeps the advantages of the conventional one. Moreover, this interferometer will not need exit optics to image the superposed fringes onto the detector; it will be more compact and lightweight, making it suitable for space-based platforms. We describe the concept of the new interferometer and present the exact expression of spatial frequency and phase of the interferogram. We also describe design and simulation of a real-fringe DASH interferometer for observation of the O [¹D] 630nm emission. The simulation results agree with the theory.

Citation Download Citation

Xiaoyun Fei, Yutao Feng, and Qinglan Bai "Real-fringe DASH interferometer for upper atmospheric wind and temperature observation: concept and simulation", Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 94492S (19 February 2015); https://doi.org/10.1117/12.2075814

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