James H. McClellan
Department of Electrical and Computer Engineering
Georgia Institute of Technology
Atlanta, GA

Array Signal Processing for Locating Buried Objects

Detection and location of buried landmines and subsurface objects is being investigated at Georgia Tech using multi-sensor systems; in this case, seismic/acoustic sensors, metal detectors, and multi-static ground penetrating radars (GPR). Images from a multi-static GPR system, formed via migration, provide excellent depth information, and are sensitive to dielectric changes. Images from EMI data (metal detectors) use the break frequency to characterize different metals. Images for seismic are made from reflected surface (Rayleigh) waves measured by an array of sensors placed at the surface. The interaction of surface waves with buried targets can be used for detection and identification, because surface waves tend to induce a resonant response in man-made targets. Algorithms based on time-reversal, as well as classical array processing, are being developed by our group at Georgia Tech.

Monday, February 14, 2005
11:00 a.m. - McMurtry Auditorium, Duncan Hall
Rice University

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* Biography:

James H. McClellan received the B.S. degree in Electrical Engineering from L.S.U. in 1969, and the M.S. and Ph.D. degrees from Rice University in 1972 and 1973, respectively. Since 1987, he has been a Professor in the School of Electrical and Computer Engineering at Georgia Tech, where he presently holds the John and Marilu McCarty Chair. He is the co-recipient of the 2004 Jack S. Kilby Signal Processing Medal from the IEEE. Prof. McClellan is a co-author of the texts Signal Processing First, Number Theory in Digital Signal Processing, Computer Exercises for Signal Processing, and DSP First: A Multimedia Approach.