Publication

Application of the time reversal of electromagnetic fields to locate lightning discharges

Farhad Rachidi-Haeri, Marcos Rubinstein, Nicolas Mora Parra
2012
Journal Articles

Abstract

In this paper, we propose a new method for locating lightning discharges. The proposed method is based on the time reversal technique introduced for acoustics in the early 1990s. By analogy to the derivations in acoustics, equations for the focusing of electromagnetic fields back to the source by time reversal are derived. We show that the wavefronts generated by back-propagating the time-reversed fields will add up in phase at the lightning strike location. Based on this observation, we present an algorithm to locate lightning discharges which requires at least three field sensors. The algorithm is illustrated and shown to be very efficient using numerically-generated fields for different cases and considering different numbers of sensors. (C) 2011 Elsevier B.V. All rights reserved.

Official source

https://infoscience.epfl.ch/entities/publication/9cdbb87a-c9c7-4561-b175-797a8452250d

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Farhad Rachidi-Haeri, Marcos Rubinstein, Nicolas Mora Parra
2012
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/9cdbb87a-c9c7-4561-b175-797a8452250d

About this result

Related concepts (28)

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In mathematics and computational science, the Euler method (also called the forward Euler method) is a first-order numerical procedure for solving ordinary differential equations (ODEs) with a given initial value. It is the most basic explicit method for numerical integration of ordinary differential equations and is the simplest Runge–Kutta method. The Euler method is named after Leonhard Euler, who first proposed it in his book Institutionum calculi integralis (published 1768–1870).

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