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000139381 1001_ $$0P:(DE-Juel1)143969$$aZhao, Yulong$$b0$$eCorresponding author
000139381 1112_ $$aIEEE Sensors 2013$$cBaltimore$$wUSA
000139381 245__ $$aNumerical modeling of the electromagnetic coupling effects for phase error correction in EIT borehole measurement
000139381 260__ $$c2013
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000139381 520__ $$aElectrical Impedance Tomography (EIT) applications in geophysics require long electrode chains (25 m) for current injection and potential measurements. Undesired inductive coupling between the wire loops for current injection and potential measurement and capacitive coupling between the cable shield and the soil strongly decrease the phase accuracy of such measurements for frequencies above 100 Hz.  Therefore, the bandwidth of EIT field measurements is typically limited to the mHz to Hz range. To overcome this limitation, we derived correction procedures for inductive and capacitive coupling by combining numerical modeling with calibration measurements. The correction procedures were verified with test measurements, where a phase accuracy better than 1 mrad at 10 kHz was achieved.
000139381 536__ $$0G:(DE-HGF)POF2-246$$a246 - Modelling and Monitoring Terrestrial Systems: Methods and Technologies (POF2-246)$$cPOF2-246$$fPOF II$$x0
000139381 7001_ $$0P:(DE-Juel1)133962$$aZimmermann, Egon$$b1
000139381 7001_ $$0P:(DE-Juel1)129472$$aHuisman, Johan Alexander$$b2
000139381 7001_ $$0P:(DE-Juel1)144273$$aTreichel, Andrea$$b3
000139381 7001_ $$0P:(DE-Juel1)133958$$aWolters, Bernd$$b4
000139381 7001_ $$0P:(DE-Juel1)142562$$avan Waasen, Stefan$$b5
000139381 7001_ $$0P:(DE-HGF)0$$aKemna, A.$$b6
000139381 773__ $$y2013
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000139381 9132_ $$0G:(DE-HGF)POF3-255$$1G:(DE-HGF)POF3-250$$2G:(DE-HGF)POF3-200$$aDE-HGF$$bMarine, Küsten- und Polare Systeme$$lTerrestrische Umwelt$$vTerrestrial Systems: From Observation to Prediction$$x0
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