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Titolo:
Broadband radio interferometer utilizing a sequential triggering techniquefor locating fast-moving electromagnetic sources emitted from lightning
Autore:
Mardiana, R; Kawasaki, Z;
Indirizzi:
Osaka Univ, Fac Engn, Dept Elect Engn, Suita, Osaka 565, Japan Osaka UnivSuita Osaka Japan 565 Dept Elect Engn, Suita, Osaka 565, Japan
Titolo Testata:
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
fascicolo: 2, volume: 49, anno: 2000,
pagine: 376 - 381
SICI:
0018-9456(200004)49:2<376:BRIUAS>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
PICTURES; FLASHES;
Keywords:
broadband interferometer; electromagnetic radiation; interferometer; lightning; sequential trigger;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Mardiana, R Osaka Univ, Fac Engn, Dept Elect Engn, Suita, Osaka 565, JapanOsaka Univ Suita Osaka Japan 565 ngn, Suita, Osaka 565, Japan
Citazione:
R. Mardiana e Z. Kawasaki, "Broadband radio interferometer utilizing a sequential triggering techniquefor locating fast-moving electromagnetic sources emitted from lightning", IEEE INSTR, 49(2), 2000, pp. 376-381

Abstract

A broadband radio interferometer to investigate the location of fast-moving electromagnetic (EM) sources emitted from lightning discharges has been designed, A sequential triggering technique was applied to the system for recording the data of broadband electromagnetic pulses from 25 to 250 MHz. Once the electromagnetic pulse is detected and its amplitude exceeds a threshold level, the triggering circuit is turned on to record the waveform and get ready to acquire another pulse afterwards. This technique can overcome the limitation of the digitizer's memory due to such high digitization rate and very large bandwidth. We have implemented our system to locate and retrace fast-moving electromagnetic sources emitted from lightning discharges during a held experiment in Australia in summer 1997, As one of the results,a cloud-to-ground lightning discharge has been reconstructed in the two-spatial dimension and in time sequence.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/08/20 alle ore 17:51:10