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

fYear

2007

fDate

18-20 Oct. 2007

Firstpage

189

Lastpage

193

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APCC.2007.4433533

Filename

4433533