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Optical Time domain Reflectometry [PDF]

, 1981
Title: Optical Time domain Reflectometry, Author: Randall E.
Park, Randall E.
openaire   +2 more sources

Time domain reflectometry-based liquid level sensor

Review of Scientific Instruments, 2005
An innovative system based on the time domain reflectometry TDR principle for the measurement of liquid level and interface is presented in this paper.
Raffaella Di Sante
exaly   +2 more sources

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Time-domain reflectometry in carbohydrate solutions

Journal of Food Engineering, 1995
With time-domain reflectometry (TDR) the dielectric permittivity of foodstuffs can be measured with the use of a cheap cable tester, which has proved its value in soil science. The materials which are examined are solutions of mono-, di- and polysaccharides.
van Loon, W.K.P., Smulders, P.E.A., van den Berg, C., van Haneghem, I.A.   +3 more
openaire   +2 more sources

Dispersion Errors in Time Domain Reflectometry

2021 13th International Conference on Electromagnetic Wave Interaction with Water and Moist Substances (ISEMA), 2021
Measurement of moisture content in a range of materials commonly uses time domain reflectometry and a transmission line surrounded by the material under test. The approach uses propagation time on the transmission line as a surrogate for permittivity and hence moisture content.
Ian Woodhead, Adrian Tan, Kim Eccleston, Ian Platt, David Rankin   +4 more
openaire   +1 more source

Time extraction method for time domain reflectometry measurements

2015 IEEE Sensors Applications Symposium (SAS), 2015
Determination and monitoring of moisture content in the soil is a requirement in many agricultural and civil engineering applications. Time domain reflectometry (TDR) is a well-known technique for its accuracy and applicability in the field. A typical TDR system consists of three units: A signal generation unit, a signal acquisition and encoding ...
Mangesh Gurav, Shahbaz Sarik, Maryam Shojaei Baghini   +2 more
openaire   +1 more source

Chaos correlation optical time domain reflectometry

Science China Information Sciences, 2010
We propose a novel correlation optical time domain reflectometry (C-OTDR) of using broadband chaotic light. This reflectometry has the advantage over the conventional OTDR and the pseudorandom signal C-OTDR in range-independent spatial resolution. We employ a laser diode with feedback from a long fiber ring cavity as the source of chaotic probe light ...
Anbang Wang, Yuncai Wang
openaire   +1 more source

time domain reflectometry

, 2011
This file contains hourly TDR soil moisture data for 1996. A key factor in a spatially explicit water-balance model is a measure of moisture in the soils over time for both calibration and validation of such a model.
core   +3 more sources

Interconnect characterization using time domain reflectometry

Proceedings of 1994 IEEE Electrical Performance of Electronic Packaging, 1995
An approach is presented for macromodeling interconnect circuitry based on measured time domain reflectometry (TDR) data. In two example circuits which are macromodeled, delay, reflection, transmission, and crosstalk are accurately simulated as compared to measured data.
S.D. Corey, A.T. Yang
openaire   +1 more source

Time Domain Reflectometry

2018
Originally, the TDR measurement technique was developed to detect defects in telecommunication cables and electrical wires, Moffitt (1964). Within recent decades, TDR was also applied to determine and monitor volumetric moisture contents in particulate and porous media, in particular soil but lately also building materials such as building bricks ...
Alexander Michel, Henryk Sobczuk, Kurt Kielsgaard Hansen   +2 more
openaire   +1 more source

Advances in optical time domain reflectometry

Journal of Lightwave Technology, 1989
Advances in optical time-domain reflectometry (OTDR), such as enlargement of dynamic range, enhancement in resolution, reduction of noise intrinsic to single-mode fibers, and increase in user friendliness of the equipment, are reviewed. The gated detection technique and recent progress in OTDR are presented.
M. Tateda, T. Horiguchi
openaire   +1 more source