Experimental Investigation of the Accuracy of an Ultrawideband Time-Domain Microwave-Tomographic System
Artikel i vetenskaplig tidskrift, 2011

The measurement accuracy of an ultrawideband (UWB) time-domain microwave-tomographic system is investigated. In order to make an assessment of the random variation of the measurements, the measurement repeatability of the system is evaluated by comparison with an UWB frequency-domain system. A phantom is imaged with the time-domain microwave-tomographic system, and the reconstructed images are compared with those obtained by using the frequency-domain system. The results suggest that with the averaging tens of measurements, the time-domain system can achieve the same level of measurement repeatability as that of the frequency-domain system in the interesting frequency range of microwave tomography. The imaging results, however, indicate that the phantom reconstruction does not require such high measurement accuracy. The permittivity profile of the phantom reconstructed from the nonaveraging time-domain measurements is very similar with that obtained by means of the frequency-domain system.

oscilloscopes

Measurement errors

random noise

time-domain measurements

microwave imaging

microwave measurements

Författare

Xuezhi Zeng

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Biomedicinsk elektromagnetik

Andreas Fhager

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Biomedicinsk elektromagnetik

Peter Linner

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Mikael Persson

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Biomedicinsk elektromagnetik

Herbert Zirath

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

IEEE Transactions on Instrumentation and Measurement

0018-9456 (ISSN)

Vol. 60 3939-3949

Styrkeområden

Livsvetenskaper och teknik

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1109/TIM.2011.2141250