Assessment of the Automation Algorithm for TDR Bridge - Ohio ...
Assessment of the Automation Algorithm for TDR Bridge - Ohio ...
Assessment of the Automation Algorithm for TDR Bridge - Ohio ...
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• Effective measured dielectric constant<br />
– Tap water: 26.2 (numerical simulation), 26.6<br />
<strong>TDR</strong> measurement<br />
– Saturated sand: 13.3 (numerical simulation),<br />
13.3 <strong>TDR</strong> measurement<br />
• Calibration equation<br />
K =<br />
−<br />
−<br />
a,<br />
r<br />
2<br />
59. 50 + 7.<br />
93K<br />
a,<br />
m 0.<br />
12K<br />
a,<br />
m<br />
Real dielectric constant<br />
60<br />
55<br />
50<br />
45<br />
40<br />
35<br />
30<br />
25<br />
Real dielectric constant<br />
Polynomial Fit <strong>of</strong> Real dielectric constant<br />
12 14 16 18 20 22<br />
Measured dielectric constant<br />
Model<br />
Polynomial<br />
Equation<br />
y = Intercept + B1*x^1 + B2*x^2<br />
Weight<br />
No Weighting<br />
Residual Sum <strong>of</strong><br />
Squares<br />
4.13799<br />
Adj. R-Square<br />
0.99099<br />
Value Standard Error<br />
Intercept -59.50104 20.48274<br />
Real dielectric<br />
constant<br />
B1<br />
B2<br />
7.92859<br />
-0.12049<br />
2.33675<br />
0.06493<br />
94
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