A technique to determine the electromagnetic properties of soil using moisture content

dc.contributor.authorCoetzee, Petrus J.
dc.date.accessioned2014-08-25T05:23:03Z
dc.date.available2014-08-25T05:23:03Z
dc.date.issued2014-05
dc.description.abstractAccurate electromagnetic ground constants are required for applications such as modelling of ground wave propagation of radio signals and antennas above a real, imperfect earth and for use in geological surveys and agricultural applications. A simple method to determine the ground parameters (conductivity and relative dielectric constant) for any radio frequency is outlined here. The method has been verified over the 2–30-MHz frequency range but should be applicable up to several GHz. First, a low cost, commercial soil moisture meter using time domain reflectometry techniques is used to determine the soil moisture percentage. Then previously published universal soil models implemented on a programmable calculator or a PC are used to calculate the required constants at the frequency of interest according to the measured moisture percentage. The results obtained by this method compare favourably with those obtained by the input impedance of a low horizontal dipole technique. The received signal strength of a ground wave, HF transmission also compares favourably with that predicted by GRWave using ground constants calculated by the soil moisture technique. This method offers significant advantages in terms of simplicity, speed and cost when compared with current techniques.en_US
dc.description.librarianam2014en_US
dc.description.urihttp://www.sajs.co.za/en_US
dc.identifier.citationCoetzee PJ. A technique to determine the electromagnetic properties of soil using moisture content. S Afr J Sci. 2014;110(5/6), Art. #2013-0225, 4 pages. http://dx.DOI.org/ 10.1590/sajs.2014/20130225.en_US
dc.identifier.issn0038-2353 (print)
dc.identifier.issn1996-7489 (online)
dc.identifier.other10.1590/sajs.2014/20130225
dc.identifier.urihttp://hdl.handle.net/2263/41561
dc.language.isoenen_US
dc.publisherAOSIS Open Journalsen_US
dc.rights© 2014. The Authors. Published under a Creative Commons Attribution Licence.en_US
dc.subjectElectromagnetic propertiesen_US
dc.subjectSoil moistureen_US
dc.subjectTime domain reflectometryen_US
dc.subjectGround constantsen_US
dc.titleA technique to determine the electromagnetic properties of soil using moisture contenten_US
dc.typeArticleen_US

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