Open AccessPropagation loss and apparent conductivity models for through‐the‐earth communication in sedimentary soil
Author(s) -
Pena Carreno Josua D.,
Noll Barreto Andre,
Braga Judson
Publication year - 2019
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2018.5793
Subject(s) - attenuation , conductivity , monte carlo method , empirical modelling , channel (broadcasting) , finite element method , soil science , geology , geotechnical engineering , computer science , mathematics , physics , simulation , engineering , telecommunications , statistics , structural engineering , optics , quantum mechanics
Much of the channel modelling found in the literature for through‐the‐earth communication is based on deterministic formulations that consider few homogeneous layers of soil. However, due to the great variation in the properties of the soil, especially of its electrical conductivity, it is very difficult to generalise channel characterisation with such models. Some empirical models are used to identify apparent conductivity at specific sites in order to determine the propagation loss at these sites at any time. However, the use of these models is limited to the few frequencies used in the reference measurements. This study aims to statistically characterise magnetic field attenuation in underground coal mines. The authors use the Monte Carlo method based on electromagnetic simulations, using the finite element method. The simulations allowed empirical modelling, resulting in optimal operating frequency, propagation loss and apparent electrical conductivity statistics, especially for transmissions at the optimal frequency of each channel.