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Software . 2011
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TDR-LAB - A compatible software with Tektronics 1502C Metallic and TDR-100 Campbell Sci. TDR Cable Testers for soil volumetric water content and soil bulk electrical conductivity measurements

Authors: Moret-Fernández, David; Vicente, José; Lera, F.; Latorre Garcés, Borja;

TDR-LAB - A compatible software with Tektronics 1502C Metallic and TDR-100 Campbell Sci. TDR Cable Testers for soil volumetric water content and soil bulk electrical conductivity measurements

Abstract

[ES] *Objetivos: La Reflectometría de Dominio Temporal es una técnica que permite realizar medidas simultáneas e instantáneas de la permitividad aparente (εa), la cual está relacionada con el contenido de humedad volumétrica del suelo(θ), y la conductividad eléctrica de la matriz del suelo (σa). Este trabajo presenta un nuevo software (TDR-Lab) que permite estimar θ y σa utilizando diferentes tipos de análisis de onda. El software, que presenta una interface de fácil manejo, puede conectarse a dos tipo diferentes de ecómetros TDR (Tektronixs 1502C y TDR100 Campbell), e incluye un sistema automático de medidas y análisis de ondas TDR. Cuatro métodos diferente de análisis de onda para la estimación de θ han sido incluidos: (i) método manual; (ii) método gráfico de “tangentes”; (iii) método gráfico que estima θ a partir del análisis de la derivada de las ondas TDR; y (iv) método numérico que estima θ por análisis inverso de la onda TDR. El software también incluye estimaciones de σa ya sea por el método gráfico o por modelización numérica de las señales TDR.

[EN] *Objectives: Time Domain Reflectometry (TDR) is a useful technique that allows real time and simultaneous estimation of the apparent permittivity (εa), which is related to the volumetric soil water content (θ), and the soil bulk electrical conductivity (σa). This work presents a new software (TDR-Lab) that allows estimation of θ and σa by using different TDR waveform analysis. The software, which has a user friendly graphical interface, can be connected to two different TDR cable testers (Tektronixs 1502C and TDR100 Campbell), and allows automated scheduling readings and analysis of TDR waveform. Four different methods of TDR waveform analysis for water content estimation have been included: (i) a manual method; (ii) the graphical “tangent method”; (iii) the derivative TDR waveform method; and (iv) a numerical modelling of the TDR signal, which estimates θ by inverse analysis of the TDR waveforms. The new software also includes estimation of σa either by graphical analysis or numerical modelling of the TDR signal.

1 Manual de usuario (54 Pag.) y 1 Fichero ejecutable para descarga del software descrito. Publicaciones relacionadas: 1) Vicente J., Lera F., Latorre B., Moret-Fernández, D., 2010. New TDR software for water content and electrical conductivity measurements. The third International Symposium on Soil Water Measurement Using Capacitance, Impedance and TDT. Murcia. 2)Vicente, J., Moret-Fernández, D., Latorre, B., González-Cebollada C., Lera, F., 2011. TDR-Lab: new TDR software for water content and electrical conductivity measurements. European Geoscience Union General Assembly. Viena, Austria.

This research was partially supported by the Ministerio de Ciencia e Inovación (Grants: PIE-200840I214; AGL2007-66320-CO2-02/AGR; AGL2009-08501) and DGA- Obra social La Caixa (Grants: GA-LC-010/2008; GA-LC-006-2008).

Peer reviewed

Country
Spain
Related Organizations
Keywords

TDR Software, Water content, Soil, Bulk electrical conductivity

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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