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Regional lightning prewarning method

A lightning early warning and regional technology, applied in the direction of alarms, electrical components, electromagnetic field characteristics, etc., can solve problems such as phase ambiguity, false alarms of atmospheric electric field meters, and complex equipment

Inactive Publication Date: 2005-07-06
CENT FOR SPACE SCI & APPLIED RES
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of the existing VHF cloud flash multi-station positioning system, which are complicated in equipment, high in cost, phase ambiguity in positioning by interferometry, and false reports in the atmospheric electric field instrument, thereby providing an accurate A regional lightning early warning method with high rate and low cost

Method used

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Embodiment

[0020] Such as Figure 4 As shown, the system that realizes the regional lightning early warning method of the present invention includes: two antennas whose length is 1 / 4 of the corresponding wavelength of the monitoring frequency, two VHF receivers, time interval counters, data processing equipment and electric field meters, two The antennas are installed at different heights of the same monitoring point, and are electrically connected to the two channels of the VHF receiver respectively. The two channels of the VHF receiver are connected to a time interval counter through a controllable logic gate, and the time interval counter is connected to the data processing equipment connection, the electric field meter is also connected to the data processing equipment.

[0021] After installation, follow the steps below:

[0022] (1) Output the value and polarity of the electric field intensity measured by the atmospheric electric field instrument to the data processing equipment, ...

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Abstract

This invention refers to a regionality thunder early warning method, which contains firstly affirming whether there is thundercloud generated electric field in the monitored area, then monitoring whether there is thundercloud generated very high frequency electromagnetic radiation wave in monitored area, finally sending the thunder warning. Said invention determines thunder electromagnetic radiation wave source range by processing the incident angle of thunder electromagnetic radiation wave to antenna according to the time difference of two channels received VHF radiation signal by double channels VHF receiver.

Description

technical field [0001] The invention relates to the problem of lightning early warning, in particular to a regional lightning early warning method based on the dual effects of static electricity and very high frequency radiation generated in the electrification process of thunderstorm clouds. Background technique [0002] Lightning disasters are one of the natural disasters that threaten the safety of human life and property. It is of great significance to give an accurate early warning before cloud-to-ground lightning strikes. At present, the direct monitoring and early warning equipment for lightning mainly include very low frequency (VLF / LF) lightning location system, very high frequency (VHF / HF) cloud flash location system and atmospheric electric field instrument, among which VLF / LF mainly detects lightning during lightning The discharge event (return) can be identified and located, and the location of the lightning return point on the ground can be determined, so as to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/08G08B21/10H04B1/06
Inventor 罗福山
Owner CENT FOR SPACE SCI & APPLIED RES
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