Multi-station lightning VHF (very high frequency) radiation source three-dimensional positioning method and system

Abstract

The invention relates to the technical field of radar detection, in particular to multi-station lightning VHF (very high frequency) radiation source three-dimensional positioning method and system. The method includes: acquiring elevation of lighting arriving a single station through double antenna arrays vertically disposed at the single station, establishing an equation set by three or more single-station elevations, and calculating to obtain an occurrence three-dimensional spatial position of a flashing radiation source. The invention provides the lightning VHF radiation source three-dimensional positioning system based on the method. The system comprises at least three single stations and a data processing center. Each single station comprises a radiofrequency antenna array, a GPS (global positioning system) clock module, and a signal acquisition and processing module. Compared with the like prior arts, the method and system enable the detection range of the single station to be effectively enlarged, the antenna arrays and the data acquisition equipment to be simpler, and equipment cost and erection cost to be lower. The method and system are capable of detecting three-dimensional spatial evolution characteristics of lightning in large range, have the functions of early lightning warning, estimation on lightning danger area and fierce thunderstorm danger and the like, and provide effective information for lightning disaster prevention and severe convection weather warning.

Description

technical field [0001] The invention relates to the technical field of lightning detection, in particular to a method and system for three-dimensional positioning of multi-station lightning VHF radiation sources. Background technique [0002] Lightning disaster is one of the ten most serious natural disasters announced by the relevant departments of the United Nations. According to relevant statistics, the economic loss caused by lightning strikes in the world reaches more than 1 billion U.S. dollars every year. Especially in recent years, under the influence of global climate warming, strong convective weather occurs frequently, and the probability of local and extreme weather events has greatly increased. At the same time, the widespread use of high-precision integrated circuits has greatly increased the demand for lightning electromagnetic radiation pulse protection for high-tech equipment. Therefore, with the development of the country's economy and society, higher and...

AI Technical Summary

Problems solved by technology

However, the system uses a horizontal antenna array, and the number of antennas at a single station must be at least three, which makes the hardware structure complex and difficult to install

Most importantly, due to the influence of the horizontal antenna array, the measurement accuracy of the elevation angle of a single station is lower for the lightning that is farther away, which seriously reduces its detection accuracy for long-distance lightning.

Images