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《Optical Technology》 2001-04
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Elementary experiment of using CCD camera to estimate the liquid water content of fog

XIE Xing sheng 1, WU Dui 2, DENG Xue jiao 2, HUANG Hao hui 2 (1 University of Science and Technology of China, Hefei 230026, China) (2 The Tropical Ocean and Meteorology Research Institute of Guangzhou, Guangzhou\ 510080, China)  
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%
【Fund】: 国家自然科学基金资助项目 (499750 0 5)
【CateGory Index】: P412.17
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