Wide Dynamic Range, High Uniformity Spectral Irradiance Source for Calibration of Scientific-Grade, Large-Size Space Detectors

被引:0
|
作者
Kong, Deyao [1 ,2 ]
Yuan, Yinlin [1 ]
Li, Haitao [3 ]
Zhai, Wenchao [1 ]
Zheng, Xiaobing [1 ]
机构
[1] Hefei Inst Phys Sci, Chinese Acad Sci, Anhui Prov Key Lab Opt Quantitat Remote Sensing, Hefei 230031, Peoples R China
[2] Univ Sci & Technol China, Sci Isl Branch, Grad Sch, Hefei 230026, Peoples R China
[3] Chinese Acad Sci, Natl Space Sci Ctr, Key Lab Elect & Informat Technol Space Syst, Beijing 100190, Peoples R China
基金
中国国家自然科学基金;
关键词
spectral irradiance source; detector calibration; high uniformity; wide dynamic range; integrating sphere; deep space exploration; INTEGRATING SPHERE; FACILITY;
D O I
10.3390/rs16132292
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In order to meet the high uniformity calibration requirements for scientific-grade, large-size space detectors used in the CHES Extrasolar Planet Exploration Mission, this paper presents the design of a wide dynamic range, high uniformity spectral irradiance source (WHUIS). Utilizing a cascade integrating sphere design, and optimizing the overlapping area radiant flux adjustment structure and illumination light path, we achieve a wide dynamic range and high uniformity irradiance output. We established an irradiance transmission model based on the new assumption and analyzed the influence of factors such as illumination distance, stray light, and non-uniform radiance on the uniformity of irradiance output. The model is then validated by building experimental equipment. The findings show that in a circular area of 40 mm, the irradiance uniformity of our light source system exceeds 99.9%, and constant color temperature is adjustable within six orders of magnitude, consistent with the uniformity level predicted by the model.
引用
收藏
页数:21
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