| 光谱连续可调星敏感器地面标定系统设计 |
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| 引用本文： | 徐达,张国玉,孙高飞.光谱连续可调星敏感器地面标定系统设计[J].空间科学学报,2017,37(5):608-615. |
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| 作者姓名： | 徐达 张国玉 孙高飞 |
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| 作者单位： | 1. 长春理工大学光电工程学院 长春 130022; |
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| 基金项目： | 吉林省重点科技攻关项目（20160204008GX）和长春理工大学科技创新基金项目（XJJLG-2016-15）共同资助 |
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| 摘 要： | 为解决由于色温不匹配对星敏感器光信号定标精度产生的影响,提出一种光谱连续可调星敏感器地面标定系统设计方案.该高精度准直光学系统的光谱范围为500~800nm,像质测试结果表明,全视场畸变小于0.08%,MTF在60lp·mm-1处大于0.6.基于DMD光源系统的组成和工作原理,对光谱分辨率和光谱曲线模拟精度进行分析,设计了一套光谱分辨率全谱段优于2nm的Czerny-Turner分光系统.测试结果表明,星点位置精度优于7";光谱分辨率为10nm和20nm时光谱曲线模拟精度分别优于2%和5%,有效降低了由于色温不匹配对星敏感器标定精度的影响.
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| 关 键 词： | 星模拟器 定标 光谱匹配 光谱连续可调 消彗差Czerny-Turner结构 |
| 收稿时间： | 2017-03-27 |
Design of Spectral Continuous Adjustable Star Sensor's Ground Calibration Systemormalsize |
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| Affiliation: | 1. School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022;2. Jilin Engineering Research Center of Photoelectric Measurement and Control Instruments, Changchun 130022 |
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| Abstract: | In order to reduce the effect on calibration precision of star sensor's optical signal caused by the mismatching color temperature, a design of star sensor's ground calibration system with adjustable spectrum is presented. The spectrum range of the high-precision collimating optical system is from 500nm to 800nm, and the image quality evaluation shows that the distortion is less than 0.08% and the Modulation Transfer Function (MTF) is greater than 0.6 at 60lp·mm-1. The composition and working principle of the DMD-based light source system are described, the spectrum resolution and the simulation accuracy are analyzed, and a set of Czerny-Turner light splitting optical system which spectrum resolution is better than 2nm is designed. The test result of the star sensor's ground calibration system shows that the accuracy of the star position is better than 7", and the accuracy of the star spectrum is better than 2% as the spectrum resolution is 10nm and better than 5% as the spectrum resolution is 20nm, the calibration error caused by the mismatching color temperature is significantly reduced. |
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