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

被引：35
|
作者：
Zeng, Xuezhi [1 ]
Fhager, Andreas [1 ]
Linner, Peter [2 ]
Persson, Mikael [1 ]
Zirath, Herbert [2 ]
机构：
[1] Chalmers, Dept Signals & Syst, S-41296 Gothenburg, Sweden
[2] Chalmers, Microwave Elect Lab, S-41296 Gothenburg, Sweden
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2011年 / 60卷 / 12期
关键词：
Measurement errors; microwave imaging; microwave measurements; oscilloscopes; random noise; time-domain measurements; DIELECTRIC-PROPERTIES; SAMPLING OSCILLOSCOPES; BIOLOGICAL TISSUES; INVERSE SCATTERING; TUMOR-DETECTION; BREAST; RECONSTRUCTION; COMPENSATION; FEASIBILITY; CALIBRATION;
D O I：
10.1109/TIM.2011.2141250
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
引用
收藏
页码：3939 / 3949
页数：11
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