| 用CCD摄像机动态估算测量云雾含水量的初步试验 |
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| 引用本文： | 谢兴生,吴兑,邓雪娇,黄颢辉.用CCD摄像机动态估算测量云雾含水量的初步试验[J].光学技术,2001,27(4):321-323. |
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| 作者姓名： | 谢兴生 吴兑 邓雪娇 黄颢辉 |
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| 作者单位： | 1. 中国科技大学大气光学遥感实验室,
2. 广州热带海洋气象研究所, |
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| 基金项目： | 国家自然科学基金资助项目 (499750 0 5) |
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| 摘 要： | 云雾含水量是一个研究和定义云雾微物理结构的关键物理量 ,它与云雾的强度直接有关。介绍一种以 CCD数字摄像机为核心器件的光学图像传感系统 ,该系统通过基于数字摄像的能见度自动测量技术 ,可以有效反演出云雾的含水量。在报告系统的测量原理、理论方法和系统基本构成后 ,给出了用该系统动态估算测量两次大雾过程的雾含水量与实测雾含水量的对比分析结果。实验结果表明 :用仪器系统动态估算测量的结果与实测值吻合得相当好。两者的均方根差小于 0 .1g/ m3,相对均方根偏差小于 2 0 %
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| 关 键 词： | CCD摄像机 气象能见度 雾含水量 雾的微物理结构 |
| 文章编号： | 1002-1582(2001)04-0321-03 |
| 修稿时间： | 2001年2月10日 |
Elementary experiment of using CCD camera to estimate the liquid water content of fog |
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| XIE Xing sheng ,WU Dui ,DENG Xue jiao ,HUANG Hao hui.Elementary experiment of using CCD camera to estimate the liquid water content of fog[J].Optical Technique,2001,27(4):321-323. |
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| Authors: | XIE Xing sheng WU Dui DENG Xue jiao HUANG Hao hui |
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| Institution: | XIE Xing sheng 1,WU Dui 2,DENG Xue jiao 2,HUANG Hao hui 2 |
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| Abstract: | The liquid water content(LWC) is a key variable in defining and researching fog microstructure It provides an indication of fog intensity and is inversely proportional to visual range In this paper, we will introduce a new method and its experimental system which can be used to estimate fog LWC dynamically Based on a optical sensor of CCD camera, this instrument can provide visual range as well as fog LWC, which is inversely calculated from visual range The basic principle, method and technology scheme are discussed in this paper, and then two comparison experiments between this system and the actual measurement LWC are carried out The results show that the average direction deviation and relative average deviation of measuring LWC between this experimental system and the actual measurement are respectively within 0 1g/m 3 and 20% |
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| Keywords: | CCD camera visual range fog liquid water content fog microphysical structure |
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