REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

Acoustic Source Localization Using a discrete probability density method for position determination

ivan pokrajac

Department for Electronic System, Military Technical Institute, Belgrade, ivan.pokrajac@vs.rs

nadica kozić

Department for Electronic System, Military Technical Institute, Belgrade, nadica.kozic@gmail.com

predrag okiljeviĆ

Department for Electronic System, Military Technical Institute, Belgrade, predrag.okiljevic@vti.vs.rs

MIODRAG VRAČAR

Department for Armament, Military Technical Institute, Belgrade, vracarmiodrag@mts.rs

BRUSIN RADIANA

Department for Electronic System, Military Technical Institute, Belgrade

Abstract: The localization of various acoustic sources in a battlefield (weapon rounds, mortars, rockets, mines, improvised explosive devices, vehicle-borne improvised explosive devices and airborne vehicles) is a hot research topic. In acoustic source localization systems multiple sensors (microphones or microphone arrays), placed at known positions, are used to detect signals emitted from the source. In this paper, Discrete Probability Density (DPD) method, as a method for position determination, has been used to estimate location of acoustic sources such as artillery weapons. The DPD method provides position estimation using Time Difference of Arrival (TDOA) data. TDOA presents relative time difference of arrival of the sound signal between pairs of sensors. The results of the proposed method have been validated using real data from the field experiment hold under the technical panel NATO STO SET-189 “Battlefield Acoustics, Multi-modal Sensing, and Networked Sensing for ISR Applications”.

Keywords: acoustic emission, localization, DPD, TDOA.