Performance Analysis of Filtered VHF Signals Captured by Lightning Interferometer System

Proceedings of the 3rd International Conference on Science and Technology Applications in Climate Change

生态环境科学

Azmi, N.A.I.^1 ; Ahmad, M.R.^1 ; Esa, M.R.M.^2 ; Sabri, M.H.M.^1 ; Periannan, D.^1 ; Seah, B.Y.^1 ; Mohamad, S.A.^2 ; Lu, G.^3 ; Yusop, N.^4 ; Ismail, M.M.^1 ; Cooray, V.^5 ; Alkahtani, A.A.^6 ; Kadir, M.Z.A.A.B.^6

Atmospheric and Lightning Research Lab, Centre for Telecommunication Research and Innovation (CeTRI), Fakulti Kejuruteraan Elektronik Dan Kejuruteraan Komputer, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, Durian Tunggal, Melaka

76100, Malaysia^1

Institute of High Voltage and High Current (IVAT), School of Electrical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), Skudai, Johor Bharu

81310, Malaysia^2

Institute of Atmospheric Physics, Chinese Academy of Sciences, China^3

Space Science Centre (ANGKASA), Institute of Climate Change, Universiti Kebangsaan Malaysia, Bangi, Selangor

43600, Malaysia^4

Ångström Laboratory, Division for Electricity, Department of Engineering Sciences, Uppsala University, Box 534, S-75121, Sweden^5

Universiti Tenaga Nasional (UNITEN), Jalan IKRAM-UNITEN, Selangor, Kajang

43000, Malaysia^6

关键词: Azimuth and elevation angles;    Cloud-to-ground flash;    Cross-correlation algorithm;    Interferometer systems;    Narrow bipolar events;    Performance analysis;    Very high frequency;    Vhf interferometers;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/228/1/012005/pdf
DOI  :  10.1088/1755-1315/228/1/012005

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

A lightning interferometer is a system that can determine the location of Very High Frequency (VHF) radiation of lightning. Such system has been studied and used for several decades ago. In this project, VHF Interferometer is used to determine the location of VHF radiations emitted by Narrow Bipolar Event (NBE) lightning flash by correlating the signals that received at three antennas. In order to get the better result, cross-correlation algorithm technique is employed to process the signals. This algorithm can determine the time delay between the antennas baselines and then determine the azimuth and elevation angles which are used to locate the location of the NBE flash. This interferometer system also can act as an earlier warning system as it detects the first cloud flash and a forecast can be made before cloud-to-ground flashes occur. Therefore, this interferometer system is very useful for the public citizens in protecting themselves from lightning strikes.