Method for monitoring and tracking forest fire echoes by using CINRAD/SA weather radar

A weather radar and echo technology, applied in the field of tracking forest fire echoes, can solve the problems of inability to echo tracking, underreporting weak forest fires, and difficult to identify and distinguish.

Active Publication Date: 2017-06-20
福建省龙岩市气象局
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Problems solved by technology

[0009] Huang Kehui from the Wenzhou Meteorological Bureau analyzed and studied the radar echo characteristics of forest fires, and developed a set of methods and software for automatically identifying forest fire echoes based on the "clutter filtering method". The echo and small clutter are filtered, and the remaining echoes are considered as forest fire echoes, but the small clutter filtered by this method may filter out the initial small forest fire, and multiple forest fires cannot be identified at the same time;
[0010] Luo Hui et al. based

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  • Method for monitoring and tracking forest fire echoes by using CINRAD/SA weather radar
  • Method for monitoring and tracking forest fire echoes by using CINRAD/SA weather radar
  • Method for monitoring and tracking forest fire echoes by using CINRAD/SA weather radar

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Embodiment Construction

[0067] Such as figure 1 Shown, a kind of method of the present invention utilizes CINRAD / SA weather radar to monitor and track forest fire echo, comprises the steps:

[0068] Step 1. Set the basic data format for CINRAD / SA weather radar monitoring

[0069] The current business model of CINRAD / SA weather radar is to complete a 0-360° scan every 6 minutes. There are 9 elevation angles for the scan. Each scan generates a volume scan base data of about 10M in size. The height and data of each elevation scan are set in order from 0 to 360°;

[0070] Since the width of the radar detection beam is 1°, the minimum data element of 1 km×1° is used as the distance base data, and the distance base data is stored in polar coordinates;

[0071] Step 2. Using the four-neighborhood method to identify echo blocks

[0072] Read the base data of all distances at the specified elevation angle (because the forest fire echo is short, so it is generally the lowest elevation angle) in the first vo...

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Abstract

The invention provides a method for monitoring and tracking forest fire echoes by using a CINRAD/SA weather radar. Echo blocks are identified by a four neighborhood method, forest fire echo blocks are identified according to data parameters, 'low, small and weak' forest fire is identified according to data parameters of the echo blocks, and continuous identification discrimination is carried out according to 'in situ and spread' characteristics of the forest fire. Echo blocks with significant movement and too fast change of intensity and area are eliminated, so the accuracy of forest fire identification is further improved. Non-forest-fire black and white list identification comparison is set, so false alarm is reduced so as to find forest fire rekindle in time. Sequence diagrams and change curves of the forest fire echo blocks in line with early warning are saved. The method of the invention makes it possible to automatically monitor, accurately identify and continuously track forest fire, and provides a scientific basis for forest fire prevention and extinguishing command, safety protection of field power equipment and so on.

Description

technical field [0001] The invention relates to a method for monitoring and tracking forest fire echoes by using CINRAD / SA weather radar. Background technique [0002] CINRAD / SA weather radar is a fully coherent pulse Doppler radar deployed nationwide. Its receiver has high sensitivity and strong detection capability. It can also detect echoes other than precipitation, for example, it can also detect echoes of reflectors floating in the air caused by forest fires and accidental explosions, so that the radar can monitor and track forest fires. [0003] There have been some relevant researches on the characteristics of forest fire echo at home and abroad. [0004] Banta et al. used laser Doppler radar and X-band Doppler weather radar to observe and analyze the smoke plumes produced by two forest fires, and believed that the laser radar and X-band Doppler weather radar can detect the three-dimensional forest fire echo. data. [0005] Melnikov et al. analyzed the dual-polariz...

Claims

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Application Information

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IPC IPC(8): G01S13/88G01S7/41
CPCG01S7/41G01S13/88
Inventor 张深寿赖巧珍蔡菁张加春倪悦张维王新强冯晋勤肖秀珠
Owner 福建省龙岩市气象局
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