A reconfigurable UWB system for real-time through wall imaging applications
- Resource Type
- Conference
- Authors
- Wang, Yazhou; Yang, Yunqiang; Fathy, Aly E.
- Source
- 2010 IEEE Radio and Wireless Symposium (RWS) Radio and Wireless Symposium (RWS), 2010 IEEE. :633-636 Jan, 2010
- Subject
- Communication, Networking and Broadcast Technologies
Computing and Processing
Real time systems
Direction of arrival estimation
Directional antennas
Performance analysis
Telecommunication switching
Directive antennas
Space technology
Interference
Antenna radiation patterns
Solids
Reconfigurable
UWB
real-time
through wall
imaging
- Language
- ISSN
- 2164-2958
2164-2974
A reconfigurable ultra-wideband system for through wall imaging application has been developed. The radar operating frequency can be selected to cover either 2–4 GHz or 8–10 GHz UWB bands. The lower UWB band is used to minimize through wall attenuation for relatively high loss wall materials, but the upper band can be utilized to achieve high image resolution for relatively low loss walls. A synthetic aperture radar has been developed that utilizes a wideband tapered slot Vivaldi array and covers an ultra wide frequency range, extending over 2–10 GHz; thus covering both regions. The developed beam-forming algorithm is based on near field models, and accounts for wall effects. Both the wave refraction and propagation speed changes are taken into considerations to obtain accurate images of various targets. Real-time experiments have been performed through both dry-walls and brick-walls to validate the performance of the radar system.