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Proceedings Paper

Improving the atmospheric wind speed measured accuracy by the ground-based airglow imaging interferometer
Author(s): Yuanhe Tang; Rui Yang; Haiyang Gao; Fengtao Zhai; Yang Yu; Jin Cui
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Paper Abstract

A prototype ground based airglow imaging interferometer (GBAII) has been constructed to observe the upper atmospheric wind velocity and temperature at an altitude of 90-100 km, but the GBAII’s wind speed accuracy was found to be unsatisfactory with a value of 21.0 m/s. Three theoretical aspects have been investigated to improve the accuracy, with the following finding: 1) By replacing the surface coatings of the GBAII’s 6 lenses and Michelson interferometer (MI) with a new wind-speed infrared film rather than the original visible light film, the accuracy can be increased by 3.0 m/s. 2) By replacing the original charge-coupled device (CCD) with a quantum efficiency (QE) of 0.38 at the wavelength of approximately 866 nm by an electron multiplying CCD (EMCCD) with QE of 0.95, the accuracy can be increased by 6.7 m/s. By adding all the factors that improve the accuracy of the GBAII, it can be improved by 15.0 m/s, which realizes the original aim of wind speed accuracy of 6.0 m/s. Experimental results have been obtained for two aspects: 1) By replacing the surface film on the GBAII’s 6 lenses and MI interface, the wind speed accuracy has been increased by 3.8 m/s. 2) A new GBAII temperature controller has been constructed to control the environmental temperature in 0.2 K steps. The results obtained by the GBAII on Dec. 6, 2013 show an average atmospheric temperature of 206.5 K, zonal wind speed of -26.8 m/s and meridional wind speed of 28.1 m/s. These results are close to those of the TIMED (Thermosphere Ionosphere Mesosphere Energetics and Dynamics) satellite Doppler interferometer (TIDI) data collected at almost the same time.

Paper Details

Date Published: 28 February 2017
PDF: 10 pages
Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 102563C (28 February 2017); doi: 10.1117/12.2257809
Show Author Affiliations
Yuanhe Tang, Xi'an Univ. of Technology (China)
Rui Yang, Xi'an Univ. of Technology (China)
Haiyang Gao, Xi'an Univ. of Technology (China)
Fengtao Zhai, Xi'an Univ. of Technology (China)
Yang Yu, Xi'an Univ. of Technology (China)
Jin Cui, Xi'an Univ. of Technology (China)

Published in SPIE Proceedings Vol. 10256:
Second International Conference on Photonics and Optical Engineering
Chunmin Zhang; Anand Asundi, Editor(s)

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