Five-channel VHF lightning detection method for cloud flashes

Author

Sun, Xiubin ; Zhang, Xiaochun ; Mou, Xiangyong ; Li, Yunmin

Author_Institution

Coll. of Electron. Eng., Chengdu Univ. of Inf. Technol., Chengdu, China

fYear

2011

fDate

1-4 Nov. 2011

Firstpage

878

Lastpage

881

Abstract

Based on the software radio technique, a five-channel VHF lightning detection method for cloud flashes is proposed in this paper. VHF radiation pulses emitted from the lightning channel are received by the five-element uniform circular arrays(UCA), and bandpass filtered in the frequency band from 110-118MHz. The band limited VHF signals are digitized with a sample rate of 52MHz, the Digital Down Converters(DDC) are used to shift their frequency down to baseband, and each channel has an I and a Q component. Using the combination of the phase difference between two baselines, the VHF sources can be located in digital signal processing (DSP) unit.

Keywords

atmospheric techniques; clouds; geophysical signal processing; geophysics computing; lightning; Q component; VHF radiation pulses; VHF sources; band limited VHF signals; cloud flashes; digital down converters; digital signal processing unit; five-channel VHF lightning detection method; five-element uniform circular arrays; frequency band; lightning channel; software radio technique; Azimuth; Clouds; Digital signal processing; Educational institutions; Lightning; Optical interferometry; Receiving antennas; Cloud Flashes; Lightning Detection Method; Software Radio; UCA; VHF;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning (APL), 2011 7th Asia-Pacific International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4577-1467-2

Type

conf

DOI

10.1109/APL.2011.6111037

Filename

6111037