Velocity and Temperature Measurement of Upper Atmosphere Wind Field Using Fabry Perot Interferometer
Zhang Chunmin¹, Xiang Libin², Zhao Baochang²
(1. Xi'an Jiaotong University, Xi'an 710049, China; 2. Xi'an Institute of Optics and Precision Mechanics)

Abstract: Upper atmospheric windfield is measured by use of Fabry Perot multibeam interference and Doppler effect. Airglow (aurora) occuring in the visible region of the upper atmosphere (80about 300km) is as probed source. Two major lines are originated from the metastable O(¹S) and O(¹D) levels at 5577nm and 6300nm. Upper atmospheric windfild's velocity and temperature are described when probed source lines known as Guassian in shape. The method disoribed is compared with the wideangle Michelson Doppler imaging interferometer (WAMDII). The result indicates that Fabry Perot interferometer's exploration for windfield has no moving parts, therefore it shows advantages of static, high resolution and is more suitable for aviation, speceflight and field circumstance's exploration.
Keywords: FPI;Doppler effect;imaging spectroscopy;velocity and temperature of upper atmospheric wind field