Share Email Print

Proceedings Paper

Research on visibility detection based on forward scattering technology
Author(s): Keke Zhang; Xueyong Zheng; Xingkui Yan; Shizhe Chen; Xiaozheng Wan; Jiming Zhang; Qiang Zhao; Bo Wang; Huanyu Zhao
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Visibility is one of the important parameters of meteorological observation. Based on the principle of infrared forward scattering and phase-locked amplification, a self-stable visibility meter is designed. The transmitter unit of visibility meter generates 875 nm light pulse at 2.3 kHz. Narrow pulse modulation technology is used to solve the problem of total power and instantaneous power of infrared LED when working, as well as the problem of natural heat dissipation, so as to reduce the aging speed of LED. The photodiode of the backscattering receiver monitors the transmitted light intensity, and adjusts the automatic feedback and the amplitude of the light pulse to keep the light intensity of the LED as the preset value. The visibility meter is compared with Visala PWD20 in the visibility measurement and verification laboratory. The experimental results show that the measurement deviations of one minute and ten minutes are within ±10% and ±4% in the range of 10~20000m. The forward scattering visibility meter is stable and has small measurement error, which can meet the requirements of visibility detection of meteorological stations.

Paper Details

Date Published: 20 November 2019
PDF: 6 pages
Proc. SPIE 11191, Advanced Sensor Systems and Applications IX, 111911A (20 November 2019); doi: 10.1117/12.2540728
Show Author Affiliations
Keke Zhang, Institute of Oceanographic Instrumentation (China)
Xueyong Zheng, Qingdao Kernel Spectrum Technology Co., Ltd. (China)
Xingkui Yan, Institute of Oceanographic Instrumentation (China)
Shizhe Chen, Institute of Oceanographic Instrumentation (China)
Xiaozheng Wan, Institute of Oceanographic Instrumentation (China)
Jiming Zhang, Institute of Oceanographic Instrumentation (China)
Qiang Zhao, Institute of Oceanographic Instrumentation (China)
Bo Wang, Institute of Oceanographic Instrumentation (China)
Huanyu Zhao, Institute of Oceanographic Instrumentation (China)

Published in SPIE Proceedings Vol. 11191:
Advanced Sensor Systems and Applications IX
Tiegen Liu; Gang-Ding Peng; Zuyuan He, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?