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Measurement Trials of Radiowave Propagation Through Pinus Pinaster Fuel Bed Under Fire

Faria, S. ; Vala, M. ; Leonor, N. ; Felício, J. M. ; Fernandes, C. A. ; Salema, C. ; Caldeirinha, R. F. S.

Measurement Trials of Radiowave Propagation Through Pinus Pinaster Fuel Bed Under Fire, Proc European Conf. on Antennas & Propagation - EUCAP, Madrid, Spain, Vol. , pp. - , March, 2022.

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Abstract
This paper presents results of a measurement campaign
conducted to evaluate the impact of forest fires on radiowave
propagation. A total mass of 3.4 kg of Pinus Pinaster
needles was used as fuel heap and it was uniformly placed in a
triangular shape bed, above a metallic table. The ignition sources
were two wool yarns soaked in diesel, allocated in two sides of
the triangle, with different incident angles, in order to generate
two independent fire fronts that will suffer a junction after some
seconds. The excess loss introduced by fire was evaluated for a
5 GHz bandwidth, from 3 to 8 GHz. A multipath analysis is also
presented in order to detect the variations on