Title:
ULTRA-SHORT BASELINE LIGHTNING THREE-DIMENSIONAL POSITIONING METHOD BASED ON BROADBAND VERY HIGH FREQUENCY RADIATION SIGNAL DETECTION
Document Type and Number:
WIPO Patent Application WO/2022/174486
Kind Code:
A1
Abstract:
The present invention relates to the technical field of lightning positioning, and in particular, to an ultra-short baseline lightning three-dimensional positioning method based on broadband very high frequency radiation signal detection. The present invention combines the ultra-short baseline advantage of an interferometer and the three-dimensional positioning capability of multi-station time difference of arrival technique, and an ultra-short baseline multi-station lightning observation layout is designed; a traditional "centroid method" technical route is abandoned; an original signal is upsampled; an ensemble empirical mode decomposition technique is introduced to analyze and optimize the upsampled signal; a cross-correlation signal matching technique based on the combination of a main window and an auxiliary window is used to fully match and extract pulse information in a very high frequency radiation signal; three-dimensional positioning is performed using the time difference of arrival technique. According to the present invention, the ultra-high resolution three-dimensional positioning of a lightning discharge process can be realized; the time resolution at which a lightning discharge event is positioned can reach the nanosecond magnitude; the theoretical resolution of a spatial error is increased to the decimeter magnitude.
Inventors:
FAN XIANGPENG (CN)
ZHANG YIJUN (CN)
WANG GUOYIN (CN)
ZHANG YIJUN (CN)
WANG GUOYIN (CN)
Application Number:
PCT/CN2021/082299
Publication Date:
August 25, 2022
Filing Date:
March 23, 2021
Export Citation:
Assignee:
ZHUHAI FUDAN INNOVATION INST (CN)
International Classes:
G01S3/00
Foreign References:
| CN103235284A | 2013-08-07 | |||
| CN102095943A | 2011-06-15 | |||
| US20100007558A1 | 2010-01-14 | |||
| JP2017181457A | 2017-10-05 |
Attorney, Agent or Firm:
MUDA INTELLECTUAL PROPERTY FIRM (CN)
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