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一种空间相机辐射定标用大面积辐射光源的研制 被引量:8

Research of large aperture integrating sphere used in the radiative calibration for space remote sensor
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摘要 针对目前空间光学遥感器向着大口径、高精度方向发展相应需要大出光面的积分球辐射光源,本文研制了一种大口径空间相机用积分球辐射定标光源,并使用自制的积分球辐射性能测试装置测试了大口径积分球光源的均匀性、余弦特性和稳定性。研制的积分球辐射定标光源内径为3000mm,出光面直径为1000mm。测试结果表明,积分球的最大幅亮度为240.13W·m-2·sr-1,辐亮度调节范围为371.5:1,辐亮度不稳定性为0.04%/h,光源出口面非均匀性为I.7%,辐射定标光源的不确定度为5%。 This paper designs a large aperture integrating sphere radiometric source system. The laborato ry radiometric calibration is an important part during the development of the space optical remote sensor and its effect is to build the response function between input radiance and output electric signal. This process usually uses an integrting sphere as the radiometrie source. The principle of radiometric calibra- tion follows full aperture, full field of view and end to end. The extended radiometric source is the standard source of laboratory radiometrie calibration and is required to illuminate the camera with full aperture and full field of view, so it must have large hatch diameter and ideal cosine radiation performance. At present,the radiometric calibration device needs a large-scale integrating sphere. Systematically, this paper describes the design method and process of a large aperture integrating sphere. We test the radiation characteristics of the large aperture integrating sphere, including the uniformity, the stability, the cosine characteristics and the output uncertainty. The diameter of the integrating sphere is 3 000 mm and the opening diameter is 1 000 ram. The test results indicate that the output uncertainty of this system is 5 %.
作者 李葆勇 任建伟 万志 李宪圣 刘则洵 孙景旭 LI gao-yong , REN Jian-wei , WAN ZHi , LI Xian-sheng , LIU Ze-xun, SUN Jing-xu (1. Changchun Institute of Optics, Fine Mechanics and Physics,Chinese Academy of Sciences, Changchun 130033, China; 2. University of the Chinese Academy of Scienees,Beijing 100049 ,China)
出处 《光电子.激光》 EI CAS CSCD 北大核心 2013年第3期464-469,共6页 Journal of Optoelectronics·laser
基金 国家“863”高技术研究发展计划基金(863-2-5-1-13B)资助项目
关键词 遥感 积分球 均匀性 稳定性 余弦特性 不确定度 remote sensing integrating sphere uniformity stability cosine uncertainty
作者简介 E-mail:lby7575@yahoo.com李葆勇(1975-),男,长春市人,副研究员,主要从事遥感图像辐射校正及空间相机辐射定标的研究.
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