Integrating acoustic shooter detection into a hearing protection device

Autor: Marcus Christoph, Véronique Zimpfer, Pascal Duffner, Pascal Hamery, Sébastien Hengy
Rok vydání: 2019
Předmět:
Zdroj: The Journal of the Acoustical Society of America. 145:1661-1661
ISSN: 0001-4966
DOI: 10.1121/1.5101097
Popis: Recent advances in the development of hearing protection devices open new fields of applications on the battlefield. While the TCAPS (Tactical Communication And Protective Systems) protect against acute acoustic traumas, they maintain information relative to the acoustic environment of the soldiers. Today, these systems are efficient for both hearing protection and communication. We propose to use the microphones equipping the TCAPS headsets in order to detect and localize shooters on the battlefield. The microphone underneath the hearing protection is used in order to detect the shock and muzzle waves generated by supersonic shots. A meshed network between the TCAPS deployed on the field allows transmitting asynchronous information relative to the detected waves to data fusion nodes that allow estimating the shooter’s position. Solutions are proposed in order to compensate the effects of the presence of the head between the microphones underneath the hearing protection. Results concerning the estimation of the time difference of arrival of a transient wave in free field and in the presence of an artificial head are presented. The data fusion process is tested thanks to simulations in various deployment configurations.
Databáze: OpenAIRE