Prediction method and system of thundercloud coverage area based on lightning location system

Abstract

The present invention proposes a method for predicting the coverage area of ​​thunderclouds based on a lightning positioning system, comprising the following steps: establishing a cluster analysis database; obtaining lightning data within the same time period, and calculating the lightning around each lightning point according to each lightning point The distance between the lightning point and the lightning point and the distance to construct the lightning data spatial position relationship table; calculate the density relationship between any two lightning points; and cluster the lightning data accordingly to generate a thunderstorm group, and Obtain the position feature point of the thunderstorm group; if there is a displacement of the position feature point, then obtain the movement track of the position feature point; and obtain the movement speed and movement direction according to the movement track; and predict the position where the thunderstorm group will appear in the next time period accordingly; And according to the position, predict the thunderstorm cloud coverage area in the next time period. The method of the invention can reduce errors and has high prediction accuracy. The invention also provides a prediction system of the thundercloud coverage area based on the lightning positioning system.

Description

technical field [0001] The invention relates to the technical field of lightning prediction and early warning, in particular to a method and system for predicting thundercloud coverage area based on a lightning positioning system. Background technique [0002] At present, a large number of in-depth researches on lightning prediction have been carried out in the field of meteorology, and fruitful results have been obtained. Researchers mainly use methods such as extrapolation, pattern recognition, and cross-correlation algorithms to identify, track, and predict thunderstorm clouds based on real-time data collected by Doppler weather radar. However, for special industries such as electric power companies, they are more concerned about the probability of lightning strikes on the ground in a specific area, and there are few research results on the location of thunderclouds and the probability of ground lightning strikes under their coverage area. Therefore, although the technol...

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Problems solved by technology

However, after research, it is found that this method has the following problems: the method is based on the grid method of the GIS platform, which converts discrete lightning points into continuous lightning distribution areas, but the thundercloud distribution area obtained in this way is not consistent with the grid division. The density is closely related, and this processing method is too rough to reflect the correlation between the ground lightning density and the thundercloud coverage area in reality

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