| 光电成像系统分析中大气传输特性计算的几个问题 |
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| 引用本文： | 王春勇,金伟其.光电成像系统分析中大气传输特性计算的几个问题[J].北京理工大学学报,2003,23(5):617-620. |
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| 作者姓名： | 王春勇 金伟其 |
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| 作者单位： | 北京理工大学,信息科学技术学院光电工程系,北京,100081 |
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| 基金项目： | 国家部委预研基金;20030404; |
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| 摘 要： | 利用美国大气传输特性软件LOWTRAN，对常用的基于气象学能见距离的大气透射比公式及中波和长波红外透射比进行了分析．结果表明：气象学能见距离透射比公式可以较好地描述美国标准大气下可见光的光谱透射比和平均透射比，但其向紫外和红外波段的适用性需要慎重处理；在高温和潮湿条件下，中波红外波段的大气平均透射比在路径的起始阶段衰减较快；但在一定距离外，中波红外波段的大气平均透射比优于长波红外波段。
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| 关 键 词： | 大气传输 红外 可见光 光谱透射比 平均透射比 |
| 文章编号： | 1001-0645(2003)05-0617-04 |
| 收稿时间： | 2002/10/25 0:00:00 |
Some Problems on the Calculation of Atmospheric Transmission Characteristics in the Analysis of Optico-Electronic Imaging System |
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| WANG Chun yong and JIN Wei qi.Some Problems on the Calculation of Atmospheric Transmission Characteristics in the Analysis of Optico-Electronic Imaging System[J].Journal of Beijing Institute of Technology(Natural Science Edition),2003,23(5):617-620. |
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| Authors: | WANG Chun yong and JIN Wei qi |
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| Institution: | Department of Optical Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Department of Optical Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China |
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| Abstract: | The U.S. software for calculating atmospheric transmission characteristics, LOWTRAN, is used to analyze the atmospheric transmission ratio based on conventional formulae within metrological visible range, as well as the medium wave and long wave infrared transmission ratios. The results show that the visible light spectrum transmission ratio and the mean transmission ratio under standard U.S. atmospheric conditions can be favorably described by the metrological visible range transmission ratio formula, but the adaptability to ultraviolet and infrared wave bands needs to be treated with caution. Under high temperature and moist conditions, the atmospheric transmission ratio for the medium infrared wave band will degenerate more rapidly at its initial pathway, but beyond a certain range the mean atmospheric transmission ratio of the medium infrared wave band will be better than that of the long wave band. |
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| Keywords: | atmospheric transmission infrared visible light spectrum transmission ratio mean transmission ratio |
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