Time-domain reflectometry

G. C. Topp; Ty Ferre

doi:10.1016/B978-0-12-822974-3.00284-6

Time-domain reflectometry

G. C. Topp, Ty Ferre

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

Time-domain reflectometry (TDR) is an electromagnetic (EM) technique using radar principles at radio frequency to estimate water content and electrical conductivity of soil. Buried parallel rods are inserted into soil, with the velocity of the TDR wave affected by the soil water content. In addition, the magnitude of the wave is decreased by electrical losses associated with the bulk electrical conductivity of the soil. From the dielectric properties of the soil, equations allow for the TDR waveform to be converted to water content and electrical conductivity. TDR has been combined with other measurements such as with tensiometers and the cone penetrometer.

Original language	English (US)
Title of host publication	Encyclopedia of Soils in the Environment, Second Edition
Publisher	Elsevier
Pages	V5-436-V5-443
ISBN (Electronic)	9780128229743
DOIs	https://doi.org/10.1016/B978-0-12-822974-3.00284-6
State	Published - Jan 1 2023
Externally published	Yes

Keywords

Dielectric constant
Electromagnetic
Frequency domain
Permittivity
Rods
Salinity
Sensor
Soil probe
Soil water content
Time domain reflectometry

ASJC Scopus subject areas

General Engineering
General Agricultural and Biological Sciences

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10.1016/B978-0-12-822974-3.00284-6

Cite this

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title = "Time-domain reflectometry",

abstract = "Time-domain reflectometry (TDR) is an electromagnetic (EM) technique using radar principles at radio frequency to estimate water content and electrical conductivity of soil. Buried parallel rods are inserted into soil, with the velocity of the TDR wave affected by the soil water content. In addition, the magnitude of the wave is decreased by electrical losses associated with the bulk electrical conductivity of the soil. From the dielectric properties of the soil, equations allow for the TDR waveform to be converted to water content and electrical conductivity. TDR has been combined with other measurements such as with tensiometers and the cone penetrometer.",

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author = "Topp, {G. C.} and Ty Ferre",

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doi = "10.1016/B978-0-12-822974-3.00284-6",

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AU - Ferre, Ty

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N2 - Time-domain reflectometry (TDR) is an electromagnetic (EM) technique using radar principles at radio frequency to estimate water content and electrical conductivity of soil. Buried parallel rods are inserted into soil, with the velocity of the TDR wave affected by the soil water content. In addition, the magnitude of the wave is decreased by electrical losses associated with the bulk electrical conductivity of the soil. From the dielectric properties of the soil, equations allow for the TDR waveform to be converted to water content and electrical conductivity. TDR has been combined with other measurements such as with tensiometers and the cone penetrometer.

AB - Time-domain reflectometry (TDR) is an electromagnetic (EM) technique using radar principles at radio frequency to estimate water content and electrical conductivity of soil. Buried parallel rods are inserted into soil, with the velocity of the TDR wave affected by the soil water content. In addition, the magnitude of the wave is decreased by electrical losses associated with the bulk electrical conductivity of the soil. From the dielectric properties of the soil, equations allow for the TDR waveform to be converted to water content and electrical conductivity. TDR has been combined with other measurements such as with tensiometers and the cone penetrometer.

KW - Dielectric constant

KW - Electromagnetic

KW - Frequency domain

KW - Permittivity

KW - Rods

KW - Salinity

KW - Sensor

KW - Soil probe

KW - Soil water content

KW - Time domain reflectometry

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DO - 10.1016/B978-0-12-822974-3.00284-6

M3 - Chapter

AN - SCOPUS:85191916153

SP - V5-436-V5-443

BT - Encyclopedia of Soils in the Environment, Second Edition

PB - Elsevier

ER -

Time-domain reflectometry

Abstract

Keywords

ASJC Scopus subject areas

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