3-D experimental UWB microwave imaging in dispersive media

ABSTRACT

Three-dimensional (3D) microwave imaging in very dispersive media using a phase shift and sum (PSAS) algorithm is presented. The phase shift and amplitude attenuation within the dispersive media are compensated individually for each frequency component and then integrated to calculate the pixel values in the region of interest (ROI). Therefore, the multi-speed and multipath issue when an ultra-wide band (UWB) signal propagates in the dispersive media is overcome. The current approach is validated by lab-collected data using our self-developed 3-D UWB microwave measurement system. Image results are compared with prior arts at the end of this paper.

KEYWORDS:

• Image reconstruction
• dispersive media
• microwave imaging
• phase compensation
• ultra-wide band

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

Wenyi Shao

Wenyi Shao was a microwave research and product development engineer. He received his BS in electrical engineering and MS in computer science in 2001 and 2004, respectively, both from Jiangsu University. He received Ph.D. in electrical engineering in 2012 from the University of North Carolina Charlotte, USA. He is now a researcher with the Johns Hopkins University Department of Radiology. He is the first author of more than 30 peer-reviewed papers, and the inventor of three US patents.

Beibei Zhou

Beibei Zhou is a senior software engineer with the Segami Corporation in USA. She received her BS and MS in 2002 and 2005, respectively, both from Jiangsu University, and Ph.D. in 2013 from the University of North Carolina Charlotte, USA, all in electrical engineering. Her research interests are image reconstruction, segmentation, and optimization.