| CCD太阳敏感器大角度入射光能衰减模型 |
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| 引用本文： | 张春明,贾锦忠,王立.CCD太阳敏感器大角度入射光能衰减模型[J].空间控制技术与应用,2009,35(2):42-45. |
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| 作者姓名： | 张春明 贾锦忠 王立 |
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| 作者单位： | 北京控制工程研究所,北京,100190 |
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| 摘 要： | 太阳敏感器的测量精度主要受地球反照的影响。通过建立大角度入射光能衰减模型,结合地球反照辐照度峰值的计算,从理论上说明了这种影响与太阳入射角的关系。以CCD太阳敏感器为例,当太阳出现在敏感器的视场边缘时,而地球反照处于最坏情况,地球反照和太阳在CCD上产生的辐照度具有可比性。最后提出了改进太阳敏感器的结构参数来减小地球反照对太阳敏感器测量影响的方法。
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| 关 键 词： | CCD太阳敏感器 地球反照 辐射强度 能量衰减 透射率 |
A Model about Energy Attenuation for Sunlight Incident Upon CCD Sensors in Large Angle |
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| ZHANG Chunming,JIA Jinzhong,WANG Li.A Model about Energy Attenuation for Sunlight Incident Upon CCD Sensors in Large Angle[J].Aerospace Contrd and Application,2009,35(2):42-45. |
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| Authors: | ZHANG Chunming JIA Jinzhong WANG Li |
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| Institution: | Beijing Institute of Control Engineering;Beijing 100190;China |
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| Abstract: | The measurement accuracy of sun sensor is mainly influenced by earth albedo.In this paper,a model about energy attenuation for sunlight incident upon CCD sun sensor in large angle is proposed.Through computing peak value of earth albedo irradiance,the influence is correlated with sunlight's incident angle in theory.For instance,the irradiance produced by earth albedo is comparable to that of the sun,when the sun appears in the edge of field of view of CCD sun sensor and earth albedo appears in the worst con... |
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| Keywords: | CCD sun sensor earth albedo radiant intensity energy attenuation ratio of transmission |
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