Abstract
A fully automatic time-domain measurement system for ultra-wideband (UWB) microwave imaging is presented. The system uses a pair of movable antennas to transmit and receive custom UWB pulse designs with each antenna able to be independently controlled to rotate about a region of interest. A full measurement, consisting of both incident and total field collections, is completed within 20 min using custom software. The collected data is processed to reconstruct images of three test objects. Imaging results demonstrate the system can localize and recognize different shaped objects, and differentiate multiple objects. The precision of antenna positioning and the impact of random noise on the microwave signal are investigated. The maximal positioning error for the antennas allows for accurate use of the system up to 7 GHz. A comparison between the time-domain system and a frequency-sweep method shows both methods allow for accurate imaging results. The signal-to-noise ratio and image quality may be improved with time-domain results when properly selecting a time window for the received signal.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IEEE Transactions on Microwave Theory and Techniques
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
