11/28/2022
By Joanne Gagnon-Ketchen
Physics colloquium, Wednesday, Nov. 30 at 4 p.m. in Ball 210
"Novel Applications of Compact Radar Range Systems," with Guy DeMartinis, Director, UML STL The compact radar range (CRR) is a type of measurement system that generates planar electromagnetic fields within a specified volume (quiet zone) in order to quantify the far-field scattering and/or radiative properties of an object or collection of objects. Far-field measurements are achieved using a compact radar range while employing source-to-target distances and related physical dimensions smaller than those specified by the Fraunhofer Criterion, hence the presence of the qualifier “compact.”
The fundamental design aspects of the radar cross section (RCS) compact radar range will be specified in this presentation and compared to those of the far-field range. The concept of electromagnetic scale modeling will be introduced from which flows the requirement for RCS compact range systems operating at mm wave to terahertz frequencies. This will be followed by the presentation of novel measurement applications of RCS compact range systems achieved by UML STL personnel, including: capturing and/or modeling moving target effects such as Doppler and micro-Doppler; as well as the implementation of compact range Compressed Sensing data acquisition and signal reconstruction.
Bio: Guy DeMartinis is the Director of the Submillimeter-Wave Technology Laboratory (STL) located at the University of Massachusetts Lowell and is also the Principal Investigator of the laboratory’s Department of Defense multi-year Submillimeter-Wave Radar Signature Modeling program. In these roles he supports the day-to-day operations of the laboratory including financial management, the overseeing of program deliverables and personnel administration. DeMartinis also works with approximately 20 full-time staff and 10 undergraduate/graduate students to expand laboratory efforts in a number of areas including the design, modeling, and novel implementation of high-frequency electromagnetic systems, devices, signal processing techniques and complex materials. He has previously held the positions of Assistant Director and Senior Radar Engineer at STL and, prior to STL, was employed as a Senior Electrical Engineer with the Raytheon Integrated Defense Systems Antenna and Microwave Group. Guy earned undergraduate degrees in both Music and Physics, as well as Masters and Doctoral degrees in Electrical Engineering, all from UMass Lowell.
As a student at UMass Lowell DeMartinis was a recipient of the C. Daniel Cole and Charles Mingin undergraduate awards in Physics as well as the Outstanding Graduate Student Award in Electrical Engineering. DeMartinis is a Senior Member of the IEEE, a member of the Tau Beta Pi and Sigma Pi Sigma Honor Societies, as well as the Order of the Engineer. He is also an FCC-licensed Extra Class Amateur Radio Operator and ARRL-VEC-accredited Volunteer Examiner.