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

Accuracy Evaluation of Ultrawideband Time Domain Systems for Microwave Imaging

Xuezhi Zeng (Institutionen för signaler och system, Biomedicinsk elektromagnetik) ; Andreas Fhager (Institutionen för signaler och system, Biomedicinsk elektromagnetik) ; Mikael Persson (Institutionen för signaler och system, Biomedicinsk elektromagnetik) ; Peter Linnér (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; Herbert Zirath (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik)
IEEE Transactions on Antennas and Propagation (0018-926X). Vol. 59 (2011), 11, p. 4279-4285.
[Artikel, refereegranskad vetenskaplig]

We perform a theoretical analysis of the measurement accuracy of ultrawideband time domain systems. The theory is tested on a specific ultrawideband system and the analytical estimates of measurement uncertainty are in good agreements with those obtained by means of simulations. The influence of the antennas and propagation effects on the measurement accuracy of time domain near field microwave imaging systems is discussed. As an interesting application, the required measurement accuracy for a breast cancer detection system is estimated by studying the effect of noise on the image reconstructions. The results suggest that the effects of measurement errors on the reconstructed images are small when the amplitude uncertainty and phase uncertainty of measured data are less than 1.5 dB and 15 degrees, respectively.

Nyckelord: Biomedical imaging, measurement errors, microwave imaging, 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: 148116

 

Läs direkt!

Lokal fulltext (fritt tillgänglig)

Länk till annan sajt (kan kräva inloggning)