Mountain fire monitoring method near transmission lines based on MODIS data

Abstract

The invention discloses a MODIS data-based monitoring method for mountain fires near power transmission lines. Step 1: Obtain satellite image data and preprocess; Step 2: Identify and exclude pixel points corresponding to water bodies and clouds; Step 3: Judge potential fire points ; Step 4: Judging the absolute fire point; Step 5: Using the background information to judge the fire point; Step 6: Filtering out the noise point; Step 7: Filtering out the industrial fire point through the NDVI index; Step 8: Judging the fire point that affects the transmission line point, and output the final fire point position; this method has the following advantages: 1. Greatly reduces the false alarm rate of abnormally high temperature points; 2. Successfully identifies industrial fire points; 3. Greatly improves the accuracy of transmission line fire point identification Rate.

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 At the same time, due to economic development, traditional dry grass and trees have been replaced by gas in rural areas, coupled with the implementation of the policy of returning farmland to forests, the vegetation in mountainous areas has become more and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...

AI Technical Summary

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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