Instrument forward model of the modified Sagnac interferometer for atmospheric wind measurement

被引:6
|
作者
Tang, Yuanhe [1 ]
Qin, Lin [1 ]
Gao, Haiyang [1 ,2 ]
Zhu, Ci [1 ]
Wang, Dingyi [3 ,4 ]
机构
[1] Xian Univ Technol, Sch Sci, Xian 710048, Peoples R China
[2] Xian Univ Technol, Sch Mech & Precis Instrument Engn, Xian 710048, Peoples R China
[3] Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Peoples R China
[4] Univ New Brunswick, Dept Phys, Fredericton, NB E3B 5A3, Canada
基金
中国国家自然科学基金;
关键词
Upper atmospheric wind field measurement; Modified Sagnac imaging interferometer; Instrument forward model; IMAGING INTERFEROMETER; MICHELSON INTERFEROMETER; RESEARCH SATELLITE; EMPIRICAL-MODEL; LIQUID-CRYSTAL; SYSTEM;
D O I
10.1016/j.optcom.2011.02.035
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The instrument forward model of the modified super-wide-Sagnac imaging interferometer based on liquid crystals on Silicon (MSASII-LCoS) is developed as an integrated code package with Matlab language to simulate the images of satellite observations. There are five sub-models in the forward model including radiation model of O((1)S), orbit attitude, filter, interferometer and array detector. The principle of each sub-model is described separately and then the overall forward model equation is derived. The four simulation images are obtained. Based on the integrated signal level for the daytime observations, the apparent measurement error of wind is less than 3 m/s and the signal noise ratio (SNR) is greater than 194 with a binning of 2 x 25 pixels at the tangent height range of 70-190 km. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:2672 / 2677
页数:6
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