Improved electric field modelling for TDR

Measurement Science and Technology

Volumn 18, Issue 4, 2007, Pages 1110-1117

  Woodhead, Ian ^a   Buchan, Graeme ^b   Platt, Ian ^a   Christie, John ^b  

^a LINCOLN AGRITECH LTD   (New Zealand)

^b LINCOLN UNIVERSITY   (New Zealand)

Author keywords

Dielectric; Heterogeneous; Integral equation; TDR

Indexed keywords

APPROXIMATION THEORY; INTEGRAL EQUATIONS; MICROWAVE MEASUREMENT; MOISTURE; POROUS MATERIALS; TIME DOMAIN ANALYSIS;

CELL DENSITY; INTEGRATION ERRORS; TIME-DOMAIN REFLECTOMETRY (TDR);

SIGNAL ANALYSIS;

APPROXIMATION THEORY; INTEGRAL EQUATIONS; MICROWAVE MEASUREMENT; MOISTURE; POROUS MATERIALS; SIGNAL ANALYSIS; TIME DOMAIN ANALYSIS;

EID: 34247268201     PISSN: 09570233     EISSN: 13616501     Source Type: Journal    
DOI: 10.1088/0957-0233/18/4/020     Document Type: Conference Paper

References (18)

1. Ferré P A, Rudolph D L and Kachanoski R G 1996 Spatial averaging of water content by time domain reflectometry: Implications for twin rod probes with and without dielectric coatings Water Resour. Res. 32 271-9
2. Harrington R F 1968 Field Computation by Moment Methods (R E Kreiger)
3. Hill S C, Durney C H and Christensen D A 1983 Numerical calculation of low-frequency TE fields in arbitrarily shaped inhomogeneous lossy dielectric cylinders Fields in Inhomogeneous Lossy Cylinders 328-36
4. Hook W R, Livingston N J, Sun Z J and Hook P B 1992 Remote diode shorting improves measurement of soil water by time domain reflectometry Soil Sci. Soc. Am. J. 56 1384-91
5. Kip A F 1969 Fundamentals of Electricity and Magnetism (New York: McGraw-Hill)
6. Knight J H 1992 Sensitivity of time domain reflectometry measurements to lateral variations in soil water content Water Resour. Res. 33 1455-60
7. Or D, Fisher B, Hubscher R A and Wraith J 1998 WinTDR 98 V4.0-Users Guide Utah State University Accessed 2006 from: http://soilphysics.usu.edu/wintdr/ index.htm
8. Qian W and Boerner D E 1995 Basis functions in 1D EM integral equation modelling Three-Dimensional Electromagnetics Ridgefield, CT
9. Ramo S, Whinnery J R and Van Duzer T 1993 Fields and Waves in Communication Electronics (New York: Wiley)
10. Savitzky A and Golay M J E 1964 Smoothing and differentiation of data by simplified least squares procedures Anal. Chem. 36 1627-39
11. Spaans E J A and Baker J M 1993 Simple baluns in parallel probes for time domain reflectometry Soil Sci. Soc. Am. J. 57 668-73
12. Tikhonov A N and Arsenin V Y 1977 Solutions of Ill-Posed Problems (Washington, DC: V H Winston and Sons)
13. Topp G C, Davis J L and Annan A P 1980 Electromagnetic determination of soil water content: measurements in coaxial transmission lines Water Resour. Res. 16 574-82
14. Torres-Verdin C and Habashy T M 1994 Rapid 2.5-dimentional forward modeling and inversion via a new nonlinear scattering approximation Radio Sci. 29 1050-79
15. van Gemert M J C 1973 High-frequency time-domain methods in dielectric spectroscopy Philips Res. Rep. 28 530-72
16. Williams W E 1980 Partial Differential Equations (Oxford: Oxford University Press)
17. Woodhead I M, Buchan G and Kulasiri D 1999 Modelling TDR response in heterogeneous composite materials 3rd Workshop on Electromagnetic Wave Interaction with Water and Moist Substances (Athens, Georgia)
18. Woodhead I, Buchan G, Kulasiri D and Christie J 2001 Non-invasive measurement of moisture distribution using TDR 4th Workshop on Electromagnetic Wave Interaction with Water and Moist Substance (Weimar, Germany)