Lightning channel spectral information identification method

Abstract

The invention relates to the technical field of meteorological monitoring equipment, in particular to a lightning channel spectral information identification method. The method comprises the steps of setting a trigger threshold value at each moment according to an imaging speed of a lightning spectral imager; triggering the triggering threshold value, and acquiring a lightning spectrum image containing the spectral line of the spectrum to be measured in real time through a lightning spectrum imager; according to a cross-correlation method, calculating a cross-correlation coefficient of the spectral line of the to-be-measured spectrum and the spectral line of the standard spectrum; determining the wavelength of each spectral line to be measured according to the cross correlation coefficient; according to the nist database, determining element information corresponding to each wavelength, and obtaining lightning channel spectrum information. The problems that in the prior art, misjudgment is likely to happen, the wavelength information of the spectrum line to be measured is recognized, the accuracy rate is low, and the efficiency is low can be solved to a certain extent.

Description

technical field [0001] The present application relates to the technical field of meteorological monitoring equipment, in particular, to a method for identifying spectral information of lightning channels. Background technique [0002] Lightning is a discharge phenomenon in the atmosphere, which can produce effects such as electromagnetic radiation, optical radiation, and shock waves. Among them, the strong luminescence phenomenon of the lightning channel is one of the most notable features, and the earliest understanding of lightning physics comes from optical observations. At present, in addition to using traditional or digital cameras to directly shoot optical images, the current optical observation methods also use advanced equipment such as spectrographs to obtain spectral image information. [0003] By studying the optical image information of the lightning channel, it is possible to measure the development speed and duration of the lightning, as well as the channel's ...

AI Technical Summary

Problems solved by technology

[0007] This application provides a method for identifying the spectral information of the lightning channel. By setting the trigger threshold, the lightning optical image is obtained in real time, and the wavelength of the spectral line to be measured is further determined by the cross-correlation method, and the element information corresponding to the wavelength is determined according to the nist database. , to a certain extent, it can solve the problems of easy misjudgment and identification of the wavelength information of the spectral line to be measured, low accuracy and low efficiency in the prior art

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