摘要
为了在地面获得高信噪比的太阳直射紫外光谱辐照度,选用紫外敏感型线阵CCD探测器,研发了高光谱紫外辐照度仪原理样机。设计了CCD电路系统,讨论了电源电路、驱动电路、模拟前端电路以及CCD驱动时序的工作原理与设计方法,并在实验室利用标准灯光源测试了CCD电路系统的非线性和信噪比。结果表明,在340 nm波段下,CCD探测器接收信号约为饱和信号的80%时,系统信噪比超过400。最终,将测试好的CCD电路系统与光机模块装调并进行了波长定标,光谱范围覆盖280~400 nm,实现了对室内光源的紫外高光谱测量,验证了CCD电路系统设计的合理性和可行性。
In order to obtain the solar ultraviolet direct spectral irradiance with high signal-to-noise ratio on the ground,an ultraviolet sensitive linear array CCD detector was selected,and a prototype of a hyperspectral ultraviolet irradiance monitor was developed.The CCD circuit system was designed.The working principles and design methods of power supply circuit,driving circuit,analog front-end circuit and timing sequence of CCD driving were discussed.The nonlinearity and signal-to-noise ratio of the CCD circuit system were tested in the laboratory using a standard light source.The results show that in the 340 nm band,when the signal received by the CCD detector reaches about 80%of the saturated signal,the signal-to-noise ratio of the system exceeds 400.Finally,the tested CCD circuit system and the optomechanical module were assembled,and the wavelength calibration of the assembled spectrum module was carried out.It is shown that the hyperspectral UV irradiance monitor covers a spectral range of 280~400 nm,which meets the working requirements of the monitor for UV hyperspectral measurement,and verifies the rationality and feasibility of the CCD circuit system design.
作者
关怡然
李新
张权
张艳娜
GUAN Yiran;LI Xin;ZHANG Quan;ZHANG Yanna(Anhui Institute of Optics and Fine Mechanics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)
出处
《量子电子学报》
CAS
CSCD
北大核心
2024年第2期246-256,共11页
Chinese Journal of Quantum Electronics
基金
国家重点研发计划(2018YFB0504600,2018YFB0504604)
中国科学院合肥物质科学研究院院长基金(YZJJ2020QN4)
国家自然科学基金(42105139)。
关键词
光谱学
高光谱紫外辐照度仪
光谱定标
线阵CCD
信噪比
spectroscopy
hyperspectral UV irradiance monitor
spectral calibration
linear CCD
signal-to-noise ratio
