Dr. Sebastien Hengy Profile

Dr. Sebastien Hengy

at Institut Franco-Allemand de Recherches de Saint-Louis

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Author

Publications (18)

Proceedings Article | 27 April 2018 Presentation + Paper

An adaptive sensing approach for the detection of small UAV: first investigation of static sensor network and moving sensor platform

M. Laurenzis, S. Hengy, M. Hammer, A. Hommes, W. Johannes, F. Giovanneschi, O. Rassy, E. Bacher, S. Schertzer, J.-M. Poyet

Proceedings Volume 10646, 106460S (2018) https://doi.org/10.1117/12.2304758

KEYWORDS: Sensors, Radar, Acoustics, LIDAR, Antennas, Unmanned aerial vehicles, Sensor networks, Optical imaging, Data fusion, Target detection

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Proceedings Article | 5 October 2017 Paper

Multimodal UAV detection: study of various intrusion scenarios

Sebastien Hengy, Martin Laurenzis, Stéphane Schertzer, Alexander Hommes, Franck Kloeppel, Alex Shoykhetbrod, Thomas Geibig, Winfried Johannes, Oussama Rassy, Frank Christnacher

Proceedings Volume 10434, 104340P (2017) https://doi.org/10.1117/12.2278212

KEYWORDS: Unmanned aerial vehicles, Acoustics, Radar, Optical sensors, Signal processing, Optical spheres, Sensor networks, Antennas, Optical tracking

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Proceedings Article | 2 May 2017 Presentation + Paper

Multi-sensor field trials for detection and tracking of multiple small unmanned aerial vehicles flying at low altitude

Martin Laurenzis, Sebastien Hengy, Alexander Hommes, Frank Kloeppel, Alex Shoykhetbrod, Thomas Geibig, Winfried Johannes, Pierre Naz, Frank Christnacher

Proceedings Volume 10200, 102001A (2017) https://doi.org/10.1117/12.2261930

KEYWORDS: Unmanned aerial vehicles, Radar, Acoustics, Optical sensors, Electro optics, Defense and security, Safety, Environmental sensing, Sensor networks, Antennas, Sensors, Doppler effect, Target detection, LIDAR, Detection and tracking algorithms

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Proceedings Article | 24 October 2016 Presentation + Paper

Detection of acoustic, electro-optical and RADAR signatures of small unmanned aerial vehicles

Alexander Hommes, Alex Shoykhetbrod, Denis Noetel, Stephan Stanko, Martin Laurenzis, Sebastien Hengy, Frank Christnacher

Proceedings Volume 9997, 999701 (2016) https://doi.org/10.1117/12.2242180

KEYWORDS: Optical sensors, Radar, Unmanned aerial vehicles, Sensors, Acoustics, Antennas, Sensor technology, Doppler effect, Electroluminescent displays, Target detection

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Proceedings Article | 21 October 2016 Presentation + Paper

Optical and acoustical UAV detection

Frank Christnacher, Sébastien Hengy, Martin Laurenzis, Alexis Matwyschuk, Pierre Naz, Stéphane Schertzer, Gwenael Schmitt

Proceedings Volume 9988, 99880B (2016) https://doi.org/10.1117/12.2240752

KEYWORDS: Unmanned aerial vehicles, Imaging systems, Defense and security, Video, Acoustics, Sensors, Short wave infrared radiation, Sensor networks, Detection and tracking algorithms, Cameras

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Proceedings Article | 21 May 2015 Paper

Electro-optical detection probability of optical devices determined by bidirectional laser retro-reflection cross section

Martin Laurenzis, Frank Christnacher, Alexis Matwyschuk, Stephane Schertzer, Sebastien Hengy

Proceedings Volume 9461, 94611L (2015) https://doi.org/10.1117/12.2175858

KEYWORDS: Sensors, Optical components, Sniper detection, LIDAR, Signal attenuation, Atmospheric optics, Electro optics, Active optics, Image resolution, Laser systems engineering

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Proceedings Article | 20 May 2015 Paper

Acoustic sensor network for hostile fire indicator for ground bases and helicopter-mounted applications

P. Naz, S. Hengy, M. Laurenzis

Proceedings Volume 9464, 94640G (2015) https://doi.org/10.1117/12.2178885

KEYWORDS: Acoustics, Sensors, Weapons, Rockets, Missiles, Sensor networks, Digital signal processing, Signal detection, Signal processing, Global Positioning System

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Proceedings Article | 17 October 2014 Paper

Improvement of optical and acoustical technologies for the protection: Project IMOTEP: Network of heterogeneous sensor types for the protection of camps or mobile troops

Sébastien Hengy, Martin Laurenzis, Véronique Zimpfer, Armin Schneider

Proceedings Volume 9248, 92480C (2014) https://doi.org/10.1117/12.2066822

KEYWORDS: Acoustics, Sensors, Sensor networks, 3D displays, Imaging systems, Data fusion, Algorithm development, Data communications, Stereoscopy, Short wave infrared radiation

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Proceedings Article | 22 May 2013 Paper

Hostile fire indicator threat data collection for helicopter-mounted applications

P. Naz, S. Hengy, S. De Mezzo

Proceedings Volume 8742, 87420J (2013) https://doi.org/10.1117/12.2015691

KEYWORDS: Acoustics, Weapons, Sensors, Interference (communication), Rockets, Signal detection, Signal processing, Data modeling, 3D modeling, Digital signal processing

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Proceedings Article | 8 November 2012 Paper

Wireless acoustic modules for real-time data fusion using asynchronous sniper localization algorithms

S. Hengy, S. De Mezzo, P. Duffner, P. Naz

Proceedings Volume 8540, 85400T (2012) https://doi.org/10.1117/12.974578

KEYWORDS: Acoustics, Data fusion, Error analysis, Digital signal processing, Algorithm development, Global Positioning System, Network architectures, 3D modeling, Prototyping, Detection and tracking algorithms

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The presence of snipers in modern conflicts leads to high insecurity for the soldiers. In order to improve the soldier's protection against this threat, the French German Research Institute of Saint-Louis (ISL) has been conducting studies in the domain of acoustic localization of shots. Mobile antennas mounted on the soldier's helmet were initially used for real-time detection, classification and localization of sniper shots. It showed good performances in land scenarios, but also in urban scenarios if the array was in the shot corridor, meaning that the microphones first detect the direct wave and then the reflections of the Mach and muzzle waves (15% distance estimation error compared to the actual shooter array distance). Fusing data sent by multiple sensor nodes distributed on the field showed some of the limitations of the technologies that have been implemented in ISL's demonstrators. Among others, the determination of the arrays' orientation was not accurate enough, thereby degrading the performance of data fusion. Some new solutions have been developed in the past year in order to obtain better performance for data fusion. Asynchronous localization algorithms have been developed and post-processed on data measured in both free-field and urban environments with acoustic modules on the line of sight of the shooter. These results are presented in the first part of the paper. The impact of GPS position estimation error is also discussed in the article in order to evaluate the possible use of those algorithms for real-time processing using mobile acoustic nodes. In the frame of ISL's transverse project IMOTEP (IMprovement Of optical and acoustical TEchnologies for the Protection), some demonstrators are developed that will allow real-time asynchronous localization of sniper shots. An embedded detection and classification algorithm is implemented on wireless acoustic modules that send the relevant information to a central PC. Data fusion is then processed and the estimated position of the shooter is sent back to the users. A SWIR active imaging system is used for localization refinement. A built-in DSP is related to the detection/classification tasks for each acoustic module. A GPS module is used for time difference of arrival and module's position estimation. Wireless communication is supported using ZigBee technology. These acoustic modules are described in the article and first results of real-time asynchronous sniper localization using those modules are discussed.

Proceedings Article | 24 May 2012 Paper

Soldier detection using unattended acoustic and seismic sensors

P. Naz, S. Hengy, P. Hamery

Proceedings Volume 8389, 83890T (2012) https://doi.org/10.1117/12.920449

KEYWORDS: Acoustics, Weapons, Sensors, Roads, Seismic sensors, Firearms, Detection and tracking algorithms, Interference (communication), Buildings, RF communications

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Proceedings Article | 20 May 2011 Paper

Networked localization of sniper shots using acoustics

S. Hengy, P. Hamery, S. De Mezzo, P. Duffner

Proceedings Volume 8046, 804602 (2011) https://doi.org/10.1117/12.883906

KEYWORDS: Wave propagation, Acoustics, Data modeling, Algorithm development, Computer simulations, Time metrology, Mirrors, Reflectivity, Reverse modeling, Buildings

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Proceedings Article | 8 May 2010 Paper

Network of acoustic sensors for the detection of weapons firing: tests for the choice of individual sensing elements

P. Naz, Ch. Marty, S. Hengy, P. Hamery

Proceedings Volume 7694, 76940X (2010) https://doi.org/10.1117/12.852537

KEYWORDS: Sensors, Acoustics, Antennas, Weapons, Sniper detection, Artillery, Protactinium, Prototyping, Sensor networks, Chemical elements

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Proceedings Article | 5 May 2009 Paper

Acoustic detection and localization of weapons fire by unattended ground sensors and aerostat-borne sensors

P. Naz, Ch. Marty, S. Hengy, L. Miller

Proceedings Volume 7333, 73330N (2009) https://doi.org/10.1117/12.819450

KEYWORDS: Sensors, Acoustics, Weapons, Atmospheric propagation, Artillery, Antennas, Wave propagation, Data acquisition, Atmospheric modeling, Unattended ground sensors

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Proceedings Article | 16 April 2008 Paper

Acoustic detection and localization of small arms, influence of urban conditions

P. Naz, Ch. Marty, S. Hengy, P. Hamery

Proceedings Volume 6963, 69630E (2008) https://doi.org/10.1117/12.783450

KEYWORDS: Antennas, Acoustics, Reflection, Atmospheric propagation, Sensors, Signal processing, Signal to noise ratio, Sniper detection, Environmental sensing, Visualization

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Proceedings Article | 11 May 2007 Paper

Sniper detection using a helmet array: first tests in urban environment

S. Hengy, S. Demezzo, P. Hamery

Proceedings Volume 6562, 656212 (2007) https://doi.org/10.1117/12.723757

KEYWORDS: Signal detection, Algorithm development, Environmental sensing, Polonium, Sniper detection, Acoustics, Firearms, Detection and tracking algorithms, Signal to noise ratio, Defense and security

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Proceedings Article | 30 November 2004 Paper

Source localization using widely separated special microphone arrays: study of the applicability of higher order statistics

Sebastien Hengy, Pierre Naz, Patrick Gounon

Proceedings Volume 5611, (2004) https://doi.org/10.1117/12.577446

KEYWORDS: Sensors, Head, Source localization, Statistical analysis, Magnetometers, Global Positioning System, Acoustics, Receivers, Interference (communication), Neodymium

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Proceedings Article | 18 September 2003 Paper

Source detection and high-resolution localization using microphone arrays for UGS: results of the NATO TG25 experiment measurements (Bourges, October 2002)

Sebastien Hengy, Pierre Naz, Patrick Gounon

Proceedings Volume 5090, (2003) https://doi.org/10.1117/12.498316

KEYWORDS: Sensors, Error analysis, Acoustics, Unattended ground sensors, Interference (communication), Data processing, Data acquisition, Signal processing, Magnetic sensors, Meteorology

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Showing 5 of 18 publications

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