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IJRSP Vol.37(3) [June 2008] >


Title:  Measurement of complex dielectric constant of soils of Gujarat at X- and C-band microwave frequencies
Authors: Gadani, D H
Vyas, A D
Keywords: Dielectric constant
Microwave frequency
Soil moisture content
Emissivity
Issue Date: Jun-2008
Publisher: CSIR
PACS No.: 77.22.Gm
Abstract:  Dielectric constant and dielectric loss of soils collected from different districts of Gujarat state for various moisture contents have been measured at X- and C-band microwave frequencies. It has been observed that the dielectric constant of soils depend on the moisture content in the soils and frequency of measurement. Dielectric constant of soils increases slowly with increase in the moisture content in the soil up to the transition moisture, after which it increases rapidly with moisture content. The measured values of complex permittivity of dry and wet soils are compared with the values calculated from the empirical models and are found to be in agreement. The observed complex permittivity is used to calculate emissivity of soils for various moisture contents. It has been found that emissivity of soils decreases with increase in moisture content in the soil.
Page(s): 221-229
ISSN: 0975-105X (Online); 0367-8393 (Print)
Source:IJRSP Vol.37(3) [June 2008]

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