Method for monitoring mountain fire nearby electric transmission line based on MODIS data

Abstract

The invention discloses a method for monitoring a mountain fire nearby an electric transmission line based on MODIS data. The method comprises the first step of obtaining satellite image data and preprocessing the satellite image data, the second step of recognizing and excluding pixels corresponding to water bodies and clouds, the third step of judging potential fire points, the fourth step of judging absolute fire points, the fifth step of judging the fire points according to background information, the sixth step of filtering out noise points, the seventh step of filtering out industrial fire points according to the NDVI, and the eighth step of judging the fire points having influences on the electric transmission line and outputting the positions of final fire points. The method has the advantages that the false report rate of abnormal high-temperature points is greatly lowered; the industrial fire points are recognized successfully; the recognition accuracy rate of the fire points nearby the electric transmission line is greatly increased.

Description

technical field [0001] The invention relates to a method for monitoring mountain fires near power transmission lines based on MODIS data. MODIS refers to a moderate-resolution imaging spectroradiometer, which is suitable for monitoring wildfire conditions near transmission lines. Background technique [0002] In recent years, with global warming, extreme weather has occurred frequently, and the central and southern regions of my country are more and more prone to continuous high temperature and sunny weather during spring plowing and Qingming period. At the same time, due to economic development, traditional dry grass and trees have been replaced by gas in rural areas, coupled with the implementation of the policy of returning farmland to forests, the vegetation in mountainous areas has become more and more intact, so wildfires occur frequently. Since transmission line corridors often pass through mountainous areas and agricultural areas, the number of wildfires near transm...

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Problems solved by technology

However, according to the traditional calculation method, due to the use of a fixed threshold, if the threshold is too high, the low-temperature fire point will be missed, and the industrial fire point and the actual mountain fire cannot be identified because the ground geographic information is not combined, and only the information of a single detection channel will be considered. The abnormal high temperature point caused by solar reflection is substituted into the fire point information. Therefore, the traditional method cannot meet the needs of real-time monitoring of mountain fires near transmission lines. Therefore, it is necessary to design a monitoring method for mountain fires near transmission lines based on MODIS data.

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