Experimental Investigation of the Accuracy of an Ultrawideband Time-Domain Microwave-Tomographic System

Autor:	Herbert Zirath, Xuezhi Zeng, Andreas Fhager, Peter Linner, Mikael Persson
Rok vydání:	2011
Předmět:	Accuracy and precision Observational error Materials science Acoustics Physics::Medical Physics Repeatability Iterative reconstruction Imaging phantom Microwave imaging Electronic engineering Time domain Tomography Electrical and Electronic Engineering Instrumentation
Zdroj:	IEEE Transactions on Instrumentation and Measurement. 60:3939-3949
ISSN:	1557-9662 0018-9456
DOI:	10.1109/tim.2011.2141250
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4a029f0f96b17c2fa37de9d3bb6b1465 https://doi.org/10.1109/tim.2011.2141250 Zobrazit plný text záznamu