On the use of the time reversal of electromagnetic fields to locate lightning discharges

Lugrin, Gaspard (Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland) ; Mora, Nicolas (Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland) ; Rachidi, Farhad (Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland) ; Rubinstein, Marcos (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Diendorfer, Gerhard (Austrian Electrotechnical Association, Vienna, Austria)

In this paper, we discuss the use of the Electromagnetic Time Reversal (EMTR) method to locate lightning discharges. The main problem of EMTR is that losses are not invariant under time reversal. In this paper, we propose 3 different models of back-propagation to fix this problem. Simulations are made to evaluate the accuracy of the proposed methods. It is shown that by assuming a lossless back-propagation model, the resulting location errors are in the order of some hundreds of meters. It is also shown that a theoretically exact estimate can be obtained considering a back-propagation over a fictitious `inverted-loss' ground.


Keywords:
Conference Type:
short paper
Faculty:
Ingénierie et Architecture
School:
HEIG-VD
Institute:
IICT - Institut des Technologies de l'Information et de la Communication
Publisher:
Vienna, Austria, 2-7 September 2012
Date:
2012-11
Vienna, Austria
2-7 September 2012
Pagination:
4 p.
Published in:
Proceedings of 2012 International Conference on Lightning Protection (ICLP), 2-7 September 2012, Vienna, Austria
DOI:
ISBN:
978-1-4673-1897-6
Appears in Collection:

Note: The status of this file is: restricted


 Record created 2020-10-20, last modified 2020-10-27

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