Monday, November 26, 2012

Check out the November issue of Transactions on Antennas and Propagation: A Through-Dielectric Ultrawideband (UWB) Switched-Antenna-Array Radar Imaging System


Abstract:

A through-dielectric switched-antenna-array radar imaging system is shown that produces near real-time imagery of targets on the opposite side of a lossy dielectric slab. This system operates at S-band, provides a frame rate of 0.5 Hz, and operates at a stand-off range of 6 m or greater. The antenna array synthesizes 44 effective phase centers in a linear array providing $lambda/2$ element-to-element spacing by time division multiplexing the radar's transmit and receive ports between 8 receive elements and 13 transmit elements, producing 2D (range vs. cross-range) imagery of what is behind a slab. Laboratory measurements agree with simulations, the air-slab interface is range gated out of the image, and target scenes consisting of cylinders and soda cans are imaged through the slab. A 2D model of a slab, a cylinder, and phase centers shows that blurring due to the slab and bistatic phase centers on the array is negligible when the radar sensor is located at stand-off ranges of 6 m or greater.

This paper appears in:
Antennas and Propagation, IEEE Transactions on
Date of Publication: Nov. 2012
Author(s): Charvat, G. L. 
Department of Electrical and Computer Engineering, Michigan State University, East Lansing, 
Kempel, L. C. ;  Rothwell, E. J. ;  Coleman, C. M. ;  Mokole, E. L.
Volume: 60 , Issue: 11 
Page(s): 5495 - 5500 
Product Type: Journals & Magazines


Download the article here:
IEEE Xplore - A Through-Dielectric Ultrawideband (UWB) Switched-Antenna-Array Radar Imaging System