Dr. Socrates Deligeorges Profile

Dr. Socrates Deligeorges

President at BioMimetic Systems Inc

SPIE Involvement:

Author

Proceedings Article | 4 June 2014 Paper

Electric-field sensors for bullet detection systems

Stephen Vinci, David Hull, Simon Ghionea, William Ludwig, Socrates Deligeorges, Thorkell Gudmundsson, Maciej Noras

Proceedings Volume 9082, 908205 (2014) https://doi.org/10.1117/12.2053901

KEYWORDS: Sensors, Electric field sensors, Acoustics, Weapons, Firearms, Signal to noise ratio, Detection and tracking algorithms, Signal processing, Environmental sensing, Signal detection

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Research and experimental trials have shown that electric-field (E-field) sensors are effective at detecting charged projectiles. E-field sensors can likely complement traditional acoustic sensors, and help provide a more robust and effective solution for bullet detection and tracking. By far, the acoustic sensor is the most prevalent technology in use today for hostile fire defeat systems due to compact size and low cost, yet they come with a number of challenges that include multipath, reverberant environments, false positives and low signal-to-noise. Studies have shown that these systems can benefit from additional sensor modalities such as E-field sensors. However, E-field sensors are a newer technology that is relatively untested beyond basic experimental trials; this technology has not been deployed in any fielded systems. The U.S. Army Research Laboratory (ARL) has conducted live-fire experiments at Aberdeen Proving Grounds (APG) to collect data from E-field sensors. Three types of E-field sensors were included in these experiments: (a) an electric potential gradiometer manufactured by Quasar Federal Systems (QFS), (b) electric charge induction, or "D-dot" sensors designed and built by the Army Research Lab (ARL), and (c) a varactor based E-field sensor prototype designed by University of North Carolina-Charlotte (UNCC). Sensors were placed in strategic locations near the bullet trajectories, and their data were recorded. We analyzed the performance of each E-field sensor type in regard to small-arms bullet detection capability. The most recent experiment in October 2013 allowed demonstration of improved versions of the varactor and D-dot sensor types. Results of new real-time analysis hardware employing detection algorithms were also tested. The algorithms were used to process the raw data streams to determine when bullet detections occurred. Performance among the sensor types and algorithm effectiveness were compared to estimates from acoustics signatures and known ground truth. Results, techniques and configurations that might work best for a given sensor platform are discussed.

Proceedings Article | 25 May 2012 Paper

Fusion solution for soldier wearable gunfire detection systems

George Cakiades, Sachi Desai, Socrates Deligeorges, Bruce Buckland, Jemin George

Proceedings Volume 8388, 838802 (2012) https://doi.org/10.1117/12.924733

KEYWORDS: Sensors, Design for manufacturing, Acoustics, Computing systems, Network architectures, Sensor networks, Global Positioning System, Data fusion, Unattended ground sensors, Sensor fusion

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Proceedings Article | 5 May 2009 Paper

Biomimetic smart sensors for autonomous robotic behavior II: vestibular processing

Shuwan Xue, Socrates Deligeorges, Aaron Soloway, Lee Lichtenstein, Tyler Gore, Allyn Hubbard

Proceedings Volume 7321, 732108 (2009) https://doi.org/10.1117/12.820936

KEYWORDS: Sensors, Acoustics, Robotics, Vestibular system, Cameras, Biomimetics, Magnetic sensors, Head, Microelectromechanical systems, Visualization

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Proceedings Article | 5 May 2009 Paper

Biologically inspired circuitry that mimics mammalian hearing

Allyn Hubbard, Howard Cohen, Christian Karl, David Freedman, David Mountain, Leah Ziph-Schatzberg, Marianne Nourzad Karl, Sarah Kelsall, Tyler Gore, Yirong Pu, Zibing Yang, Xinyu Xing, Socrates Deligeorges

Proceedings Volume 7321, 732109 (2009) https://doi.org/10.1117/12.821282

KEYWORDS: Digital signal processing, Analog electronics, Nerve, Neurons, Signal processing, Field programmable gate arrays, Acoustics, Mirrors, Computing systems, Electronics

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Proceedings Article | 5 May 2009 Paper

Biomimetic smart sensors for autonomous robotic behavior I: acoustic processing

Socrates Deligeorges, Shuwan Xue, Aaron Soloway, Lee Lichtenstein, Tyler Gore, Allyn Hubbard

Proceedings Volume 7321, 732107 (2009) https://doi.org/10.1117/12.820935

KEYWORDS: Acoustics, Biomimetics, Sensors, Signal processing, Robotics, Ear, Detection and tracking algorithms, Receivers, Feature extraction, Smart sensors

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Proceedings Article | 16 April 2008 Paper

Miniaturization of electronics for a biomimetic acoustic direction finding system for use on multiple platforms

Allyn Hubbard, Howard Cohen, Socrates Deligeorges, David Freedman, Tyler Gore, Christian Karl, Sarah Kelsall, Marianne Nourzad, Yirong Pu, Shuwan Xue

Proceedings Volume 6963, 696311 (2008) https://doi.org/10.1117/12.784276

KEYWORDS: Digital signal processing, Analog electronics, Neurons, Transistors, Biomimetics, Field programmable gate arrays, Nerve, Algorithm development, Signal processing, Signal to noise ratio

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Proceedings Article | 16 April 2008 Paper

The development of a biomimetic acoustic direction finding system for use on multiple platforms

Socrates Deligeorges, David Anderson, Cassandra Browning, Howard Cohen, David Freedman, Tyler Gore, Christian Karl, Sarah Kelsall, David Mountain, Marianne Nourzad, Yirong Pu, Matt Sandifer, Shuwan Xue, Leah Ziph-Schatzberg, Allyn Hubbard

Proceedings Volume 6963, 696313 (2008) https://doi.org/10.1117/12.784246

KEYWORDS: Acoustics, Sensors, Cameras, Biomimetics, Weapons, Human-machine interfaces, Prototyping, Calibration, Robotics, Flame detectors

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Showing 5 of 7 publications

Conference Committee Involvement (1)

Bio-Inspired/Biomimetic Sensor Technologies and Applications

13 April 2009 | Orlando, Florida, United States

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