High-precision compensation and calibration method for four-quadrant analog sun sensor

被引：1
|
作者：
Deng H.-J. [1 ,2 ]
Wang H. [1 ,2 ]
Wang B.-D. [1 ,2 ]
Jin Z.-H. [1 ,2 ]
机构：
[1] Micro-Satellite Research Center, Zhejiang University, Hangzhou
[2] Key Laboratory of Micro-Nano Satellite Research, Zhejiang University, Hangzhou
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2021年 / 55卷 / 10期
关键词：
Calibration; Compensation; Error analysis; Four-quadrant; Sun sensor;
D O I：
10.3785/j.issn.1008-973X.2021.10.022
中图分类号：
学科分类号：
摘要：
A high-precision error compensation method was proposed for the four-quadrant analog sun sensor in order to improve the accuracy of the micro-nano satellite attitude determination system. A completely automated calibration process was designed. The process of measuring the photogenerated current of the four-quadrant silicon photocell was analyzed, and the projection relationship of the incident sunlight was modeled to extract the main error sources. All aspects of the process were considered, and the current measurement errors in each channel were separately corrected. The errors caused by machining and installation errors and the errors caused by neglecting the thickness of the optical mask were compensated, which formed a complete compensation method. The experimental results showed that machining and installation errors were the main error sources, and the influence of the error caused by neglecting the thickness of the optical mask was slightly greater than that of the current measurement error. The average accuracy before compensation was 3.072° (1σ) within ±40° of incident angle, and the average accuracy was 0.177° (1σ) after compensation. The accuracy after calibration of the existing method was 0.5°(1σ). The calibration accuracy of the proposed method was improved by about three times compared with the existing method. A set of automated calibration test method for the whole process was designed aiming at the production process of calibration test, which obviously improved the calibration efficiency and was suitable for mass application. © 2021, Zhejiang University Press. All right reserved.
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页码：1993 / 2001
页数：8
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