A Tiny Fabry-Perot Interferometer with Postpositional Filter for Measurement of the Thermospheric Wind

详细信息    查看全文

• 作者：Houmao Wang ; Yongmei Wang ; Jianguo Fu
• 关键词：Key wordsFabry ; Perot interferometer (FPI) ; postpositional filter ; thermospheric wind ; 630.0 nm nightglow
• 刊名：Acta Geophysica
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：64
• 期：6
• 页码：2748-2760
• 全文大小：446KB
• 刊物主题：Geophysics/Geodesy; Structural Geology; Geotechnical Engineering & Applied Earth Sciences;
• 出版者：Springer International Publishing
• ISSN：1895-7455
• 卷排序：64

文摘

A tiny and low-cost ground-based Fabry-Perot interferometer (FPI) was designed using a filter behind etalon and Galilean telescope system for the thermospheric wind observation with OI 630.0 nm nightglow emissions (~250 km). Based on the instrument, experiments were carried out at Langfang (39.40° N, 116.65° E) site for a rough comparison and Kelan (38.71° N, 111.58° E) site for a detailed validation. Wind results of Langfang experiment are well consistent with measurements of two other FPIs deployed at Xinglong (40.40° N, 117.59° E) and Kelan which are retrieved by the American National Center for Atmospheric Research (A-NCAR). In Kelan experiment, the averaged wind deviation between our FPI and A-NCAR FPI is 11.8 m/s. The averaged deviation of wind measurement error between them is 2.9 m/s. The comparisons suggest good agreement. Then, the analysis of influencing factors was made. The center determination offset has an exponential relation with wind deviation, while the radius calculation offset is linear with wind deviation.