IEEE

IEEE 356-1974

IEEE Guide for Radio Methods for Measuring Earth Conductivity

IEEE 356-1974

IEEE Guide for Radio Methods for Measuring Earth Conductivity


IEEE 356-1974

IEEE Руководство по методам радиосвязи для измерения Земли Проводимости


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Дата ввода
20.02.1974
Дата утверждения
Тип Цена
Электронная версия ( PDF ) 87.00
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IEEE 356-1974 IEEE Guide for Radio Methods for Measuring Earth Conductivity

IEEE 356-1974 IEEE Руководство по методам радиосвязи для измерения Земли Проводимости

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Область применения

The earth’s surface and the material below it affect both the point-to-point radio-wave propagation above and below the earth’s surface and the impedance of the antennas employed. For this reason the radio engineer is concerned with the macroscopic electrical properties of the earth. The properties of concern here are the conductivity and dielectric constant (or permittivity). We are also concerned with the horizontal stratification that may exist. However, we do not consider the effects of surface roughness in any detail. In what follows, the magnetic permeability of the earth is taken to be that of free space po = 4~ x lo-’ H/m. Exceptions, of course, occur in localized regions containing magnetic material for which the magnetic permeability p differs from p, (for example magnetite). The techniques for determining the electrical constants of the earth can be broadly divided into two categories: (1) those where drill-hole access into the earth does not exist (2) those where drill holes can be employed Where a drill hole can be used, the methods for single drill holes give localized values of the constants in the vicinity of the hole. Propagation between two holes can be used to deduce bulk values of the electrical constants of the earth between. To

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[23] IEEE Antennas and Propagation Society

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