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Proceedings Paper

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

Paper Details

Date Published: 19 February 2015
PDF: 7 pages
Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 94492S (19 February 2015); doi: 10.1117/12.2075814
Show Author Affiliations
Xiaoyun Fei, Xi'an Institute of Optics and Precision Mechanics (China)
Yutao Feng, Xi'an Institute of Optics and Precision Mechanics (China)
Qinglan Bai, Xi'an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 9449:
The International Conference on Photonics and Optical Engineering (icPOE 2014)
Ailing Tian; Anand Asundi; Weiguo Liu; Chunmin Zhang, Editor(s)

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