Title :
Accuracy improvement of focusing resolution for ultra wideband imaging systems
Author :
Payommai, Tanaporn ; Supanakoon, Pichaya ; Promwong, Sathaporn ; Sukutamtanti, Nikorn
Author_Institution :
King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok
Abstract :
The focusing resolution is very important performance for ultra wideband (UWB) imaging systems. In this paper, the accuracy of focusing resolution is improved for UWB imaging systems. The time-reversal (TR) electromagnetic (EM) pulse propagation is done via the numerical simulation of finite difference time domain (FDTD) method. The modulated Gaussian pulse is used as the UWB EM pulse. The accuracy is improved by increasing the elements of TR array (TRA). The directional error of each case is shown and investigated. From the results, we clearly see that the increasing of TRA elements can be improved the accuracy of focusing resolution.
Keywords :
finite difference time-domain analysis; image processing; imaging; ultra wideband communication; directional error; finite difference time domain method; focusing resolution accuracy; modulated Gaussian pulse; time-reversal electromagnetic pulse propagation; ultrawideband imaging systems; Bandwidth; Electromagnetic propagation; FCC; Finite difference methods; Focusing; High-resolution imaging; Image resolution; Pulse modulation; Time domain analysis; Ultra wideband technology;
Conference_Titel :
Communications, 2007. APCC 2007. Asia-Pacific Conference on
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-1374-4
Electronic_ISBN :
978-1-4244-1374-4
DOI :
10.1109/APCC.2007.4433533
