Development of Precipitation Measurement System Based on Light Blocking Principle

Journal of Atmospheric and Environmental Optics ›› 2017, Vol. 12 ›› Issue (4): 260-268.

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Development of Precipitation Measurement System Based on Light Blocking Principle

CHENG Yin1, LIU Daxin3*, LIU Jianguo1, LU Yihuai1, GUI Huaqia1, Xie Le1,2

(1. Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
2.University of Science and Technology of China;
3. China Meteorological Administration Meteorological Observation Centre, Beijing 100081, China)

Online:2017-07-28 Published:2017-07-19
Supported by:
Supported by Science and Technology Service Network Initiative of the Chinese Academy of Science(中国科学院科技服务网络计划区域重点项目，KFJ-STS-QYZD-022), Anhui Natural Science Foundation Project(安徽省自然科学基金项目，1408085MKL91), Wanjiang Center for Development of Emerging Industrial Technology of the Chinese Academy of Science Enterprise cooperation projects(中科院皖江新兴产业技术发展中心企业合作项目，CYXX-15-01)

Abstract

Abstract:

Precipitation is a regular project of meteorological observation, which is an important parameter for studying global hydrothermal cycle and climate change. Automatic observation of precipitation is an important part of the future development of meteorology in China. So a new-developed precipitation measurement system based on light blocking principle is introduced. Opposite-type laser optical system designed and the shading signal of the precipitation particles can be captured correctly. The weak signal detection system based on correlation principle is developed to measure the information of particle velocity and particle size. The data smoothing algorithm is adopted to reduce the system noise in data signal processing. The system can accurately measure the distribution of raindrop distribution, precipitation amount, precipitation type. Compared with data of other similar instruments, the data of the system has good consistency and can meet the requirement of automatic observation of precipitation.

Key words: laser diode, precipitation instrument, raindrops spectrum, precipitation particles

CLC Number:

P426

CHENG Yin, LIU Da-Xin, LIU Jian-Guo, GUI Hua-Qiao, Liu-Yi-Huai, XIE Le. Development of Precipitation Measurement System Based on Light Blocking Principle[J]. Journal of Atmospheric and Environmental Optics, 2017, 12(4): 260-268.

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Development of Precipitation Measurement System Based on Light Blocking Principle

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