CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

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

Xuezhi Zeng (Institutionen för signaler och system, Biomedicinsk elektromagnetik) ; Andreas Fhager (Institutionen för signaler och system, Biomedicinsk elektromagnetik) ; Peter Linnér (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; Mikael Persson (Institutionen för signaler och system, Biomedicinsk elektromagnetik) ; Herbert Zirath (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik)
IEEE Transactions on Instrumentation and Measurement (0018-9456). Vol. 60 (2011), 12, p. 3939-3949.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Measurement errors, microwave imaging, microwave measurements, oscilloscopes, random noise, time-domain measurements



Den här publikationen ingår i följande styrkeområden:

Läs mer om Chalmers styrkeområden  

Denna post skapades 2011-11-03. Senast ändrad 2015-08-10.
CPL Pubid: 148117

 

Läs direkt!

Lokal fulltext (fritt tillgänglig)

Länk till annan sajt (kan kräva inloggning)