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International Journal of Aerospace Engineering Volume 2021 ,2021-09-30
High-Precision Angle Prediction of Sun for Space Remote Sensing Instrument
Research Article
Yan Wang 1 , 2 Zhanfeng Li 1 Guanyu Lin 1 Yu Huang 1
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DOI:10.1155/2021/8733478
Received 2021-8-5, accepted for publication 2021-9-18, Published 2021-09-30
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摘要

In order to grasp the timing of sun calibration in advance, this paper introduces a high-precision method to predict the solar angle by using the current broadcast time and orbital instantaneous root of the satellite platform. By calculating the sun’s apparent right ascension and apparent declination, the conversion matrix from the geocentric inertial coordinate system to the orbital coordinate system, and the satellite attitude correction matrix, the sun vector in the satellite body coordinate system is obtained. This method is used to predict the sun angle of a sun synchronous orbit in the satellite coordinate system, and the prediction results are compared with the STK simulation results. The results show that the sun angle prediction error of this method is less than ±0.003°. It can meet the requirements of on-orbit solar calibration. The main error sources in the prediction method are analysed.

授权许可

Copyright © 2021 Yan Wang et al. 2021
https://creativecommons.org/licenses/by/4.0/

通讯作者

Yan Wang.Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China, cas.cn;University of Chinese Academy of Sciences, Beijing 101408, China, ucas.ac.cn.wangyanqy@sina.com

推荐引用方式

Yan Wang,Zhanfeng Li,Guanyu Lin,Yu Huang. High-Precision Angle Prediction of Sun for Space Remote Sensing Instrument. International Journal of Aerospace Engineering ,Vol.2021(2021)

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