Share Email Print
cover

Proceedings Paper • new

Analysis and experiment of synchronized calibration of doppler asymmetric spatial heterodyne spectroscopy (DASH)
Author(s): Di Fu; Zhinan Zhang; Zhaohui Zhang; Peng Yan; Juan Li; Yafei Zhang; Yutao Feng
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Doppler asymmetric spatial heterodyne spectroscopy (DASH) with its high stability and feasibility of synchronized calibration highly suit for the wind field observation. By applying the synchronized calibration, the thermal phase distortion of observation emission line could be corrected greatly based on the similarity of thermal effects between observation emission line and calibration line. While, the correction residual which could be called relative thermal phase distortion still influence the wind measurement precision significantly. In this manuscript, we discuss and analyze the relative phase distortion of DASH theoretically and practically based on the DASH retrieval theory and the experiment. Firstly, based on the retrieve theory of DASH, we analyze the relationship between the relative phase distortion and the precision of the wind measurement. It is found that 1.528mrad phase error equal to 1m/s wind measurement error for the DASH developed by our research group. Secondly, based on the DASH developed by our research group, laser of 632.8nm and Ne lamp are employed as input source to test relationship between relative phase distortion and internal temperature of interferometer. According to the experiment result, the relative phase distortion change weekly with the variation of temperature between 25.14°C and 25.67°C. While, the relative phase stability decrease rapidly in other else temperature range. Lastly, according to the experiment result, we analyze the major source of relative phase distortion which could make contribution to reducing the relative phase error, which could increase the wind measurement precision, in the future research.

Paper Details

Date Published: 15 February 2019
PDF: 7 pages
Proc. SPIE 11052, Third International Conference on Photonics and Optical Engineering, 1105216 (15 February 2019); doi: 10.1117/12.2522002
Show Author Affiliations
Di Fu, Xi'an Institute of Optics and Precision Mechanics (China)
Zhinan Zhang, Xi'an Institute of Optics and Precision Mechanics (China)
Zhaohui Zhang, Xi'an Institute of Optics and Precision Mechanics (China)
Peng Yan, Xi'an Institute of Optics and Precision Mechanics (China)
Juan Li, Xi'an Institute of Optics and Precision Mechanics (China)
Yafei Zhang, Xi'an Institute of Optics and Precision Mechanics (China)
Yutao Feng, Xi'an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 11052:
Third International Conference on Photonics and Optical Engineering
Ailing Tian, Editor(s)

© SPIE. Terms of Use
Back to Top