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1. 中国科学院 长春光学精密机械与物理研究所, 吉林 长春 130033
2. 中国科学院 研究生院, 北京 100039
Received:25 April 2012,
Revised:06 June 2012,
Published:10 August 2012
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万志, 李葆勇, 李宪圣, 刘则洵, 刘洪兴, 叶钊. 积分球光源分布温度对宽波段光学遥感器绝对辐射定标的影响及其校正[J]. 发光学报, 2012,33(8): 863-868
WAN Zhi, LI Bao-yong, LI Xian-sheng, LIU Ze-xun, LIU Hong-xing, YE Zhao. Influence of Integrating Sphere Source's Distribution Temperature on Broadband Optical Remote Sensor's Absolute Radiometric Calibration and Correcting Methods[J]. Chinese Journal of Luminescence, 2012,33(8): 863-868
万志, 李葆勇, 李宪圣, 刘则洵, 刘洪兴, 叶钊. 积分球光源分布温度对宽波段光学遥感器绝对辐射定标的影响及其校正[J]. 发光学报, 2012,33(8): 863-868 DOI: 10.3788/fgxb20123308.0863.
WAN Zhi, LI Bao-yong, LI Xian-sheng, LIU Ze-xun, LIU Hong-xing, YE Zhao. Influence of Integrating Sphere Source's Distribution Temperature on Broadband Optical Remote Sensor's Absolute Radiometric Calibration and Correcting Methods[J]. Chinese Journal of Luminescence, 2012,33(8): 863-868 DOI: 10.3788/fgxb20123308.0863.
实测了积分球输出光谱辐亮度分布曲线
并得到积分球光源的分布温度。从理论上分析了积分球光源分布温度影响宽波段光学遥感器绝对辐射定标精度的原因和机理
并仿真计算了包括积分球和太阳在内的几种不同分布温度光源定标某宽波段光学遥感器时得到的定标系数。仿真结果表明
不同分布温度间的定标系数最大差别大于2%。在此基础上提出了积分球光源分布温度影响绝对辐射定标系数的校正方法
为提高宽波段遥感器的辐射定标精度和遥感图像辐射校正提供了思路和依据。
The distribution temperature of the integrating sphere was calculated according to the measured integrating sphere spectral distribution. The influence of integrating sphere source's distribution temperature on broadband optical remote sensor's absolute calibration accuracy is analyzed. The simulation experiment was carried out to calculate optical remote sensor's absolute calibration coefficient based on different distribution temperature sources
including the measured integrating sphere source and the sun. The calculation result indicated that the maximum calibration coefficient difference between different distribution temperature sources was over 2%. The correcting methods to reduce the influence of integrating sphere source's distribution temperature on broadband optical remote sensor's absolute calibration accuracy are proposed
which will provide effective method for improving radiometric calibration accuracy and calibrating remote sensing image.
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