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| Research on 2700 K blackbody color temperature spectral simulation method for calibrating visibility meter |
| Zhang Jian1,2,3, Sun Jiliang1, Zhang Guoyu1,2,3, Sun Gaofei1,2,3, Liang Jing1, Chong Wei1,4, Yang Xiaotong1 |
1. School of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun 130022;
2. Opto-electronic Measurement and Control Instrumentation,Jilin Province Engineering Research Center,Changchun 130022,3. Key Laboratory of Opto-electronic Measurement and Optical Information Transmission Technology,Ministry of Education,Changchun 130022;
4. Meteorological Observation Center of CMA,Beijing 100081 |
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Abstract In view of the current lack of technical means for the calibration of visibility measuring instruments that meet the definition of visibility by the World Meteorological Organization,this paper proposes a 2700 K color temperature spectrum simulation method based on Gaussian spectrum model.According to the 2700 K color temperature spectrum simulation model,the engineering feasible Gaussian spectrum fitting unit full width at half maximum and peak wavelength combination are analyzed.The 2700 K blackbody color temperature spectrum is simulated by using a combination of a Gaussian spectrum fitting unit with a full width of 20 nm,a peak wavelength from 380 nm to 780 nm,and a peak interval of 20 nm.The simulation results provide technical support for establishing a calibration method for visibility measuring instruments that conforms to the definition of visibility defined by the World Meteorological Organization.
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Received: 12 October 2020
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2020, Vol. 37 
