Masters Thesis Defense for Julie White
06/13/17 at 11:00 AM
June 8, 2017
Dear Faculty, graduate and undergraduate students,
You are cordially invited to my Masters thesis defense.
Title: A Curvelet Prescreener for Detection of Explosive Hazards in Handheld Ground-Penetrating Radar
When: Tuesday, June 13, 2017 at 11:00 AM
Where: Simrall Hall, Room 228
Candidate: Julie White
Degree: Masters, Electrical and Computer Engineering
Committee:
Dr. John E. Ball
Assistant Professor of Electrical and Computer Engineering (Major Professor)
Dr. Derek T. Anderson
Assistant Professor of Electrical and Computer Engineering (Committee Member)
Dr. Nicolas H. Younan
Department Head and Professor of Electrical and Computer Engineering (Committee Member)
Abstract:
Explosive hazards, above and below ground, are a serious threat to civilians and soldiers.
In an attempt to mitigate these threats, different forms of explosive hazard detection (EHD) exist; e.g, multi-sensor hand-held platforms, downward looking and forward looking vehicle mounted platforms, etc.
Robust detection of these threats resides in the processing and fusion of different data from multiple sensing modalities, e.g., radar,infrared, electromagnetic induction (EMI), etc.
The focus of this thesis is on the implementation of two new algorithms to form a new energy-based prescreener in hand-held ground penetrating radar (GPR).
First, B-scan signal data is curvelet filtered using either Reverse-Reconstruction followed by Enhancement (RRE) or selectivity with respect to wedge information in the Curvelet transform, Wedge Selection (WS).
Next, the result of a bank of matched filter are aggregated and run a size contrast filter with Bhattacharyya distance.
Alarms are then combined using weighted mean shift clustering.
Results are demonstrated in the context of receiver operating characteristics (ROC) curve performance on data from a U.S. Army test site that contains multiple target and clutter types, burial depths, and times of the day.
Best Regards,
Julie White
—
Julie White
jlw789@msstate.edu