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Entry: Frequency domain reflectometry

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URI: http://codes.wmo.int/wmdr/ObservingMethodTerrestrial/419    

Measurement of soil capacitance by means of radio frequency waves. The soil acts as the dielectric completing a capacitance circuit, which is part of a feedback loop of a high-frequency transistor oscillator. [Based on 'Frequency domain reflectometry' in Guide to Hydrological Practices (WMO-No. 168), Volume I. 2008 edition, updated in 2020.]

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date submitted 2 Jan 2024 17:12:41.761
definition
entity Frequency domain reflectometry
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description Measurement of soil capacitance by means of radio frequency waves. The soil acts as the dielectric completing a capacitance circuit, which is part of a feedback loop of a high-frequency transistor oscillator. [Based on 'Frequency domain reflectometry' in Guide to Hydrological Practices (WMO-No. 168), Volume I. 2008 edition, updated in 2020.]
item class Concept
label Frequency domain reflectometry
notation 419
register observing method terrestrial
status status stable
submitter
account name https://api.github.com/users/amilan17
name amilan17

type register item
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Definition

description Measurement of soil capacitance by means of radio frequency waves. The soil acts as the dielectric completing a capacitance circuit, which is part of a feedback loop of a high-frequency transistor oscillator. [Based on 'Frequency domain reflectometry' in Guide to Hydrological Practices (WMO-No. 168), Volume I. 2008 edition, updated in 2020.]
label Frequency domain reflectometry
notation 419
type Concept