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@MISC{Zhao:139381,
author = {Zhao, Yulong and Zimmermann, Egon and Huisman, Johan
Alexander and Treichel, Andrea and Wolters, Bernd and van
Waasen, Stefan and Kemna, A.},
title = {{N}umerical modeling of the electromagnetic coupling
effects for phase error correction in {EIT} borehole
measurement},
reportid = {FZJ-2013-05377},
year = {2013},
abstract = {Electrical 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.},
organization = {IEEE Sensors 2013, Baltimore (USA)},
cin = {ZEA-2 / IBG-3},
cid = {I:(DE-Juel1)ZEA-2-20090406 / I:(DE-Juel1)IBG-3-20101118},
pnm = {246 - Modelling and Monitoring Terrestrial Systems: Methods
and Technologies (POF2-246)},
pid = {G:(DE-HGF)POF2-246},
typ = {PUB:(DE-HGF)17},
url = {https://juser.fz-juelich.de/record/139381},
}