Multi shooter localization with acoustic sensors

Date

2017

Author

Akman, Çağlar

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This thesis proposes a generalized estimation framework for acoustic based shooter localization system relying on time of arrival (ToA) and direction of arrival (DoA) of gunshot acoustic events, namely muzzle blast and shockwave. This framework is valid in case both acoustic events are present or one of them is missing. Furthermore, it provides a solution not only for a single shooter but also for simultaneous multiple shooters. As regards to details, this thesis proposes a DoA estimation method based on beamforming for simultaneous multi shooter detection in reverberant environment. A system calibration method for adjusting microphone positions in the microphone array and estimating local speed of sound to enhance shooter localization accuracy is also proposed in this thesis. Finally, this thesis proposes an architecture and a hardware design for the implementation of this acoustic based shooter localization system. 

Subject Keywords

Beamforming., Signal processing., Acoustical engineering.

URI

http://etd.lib.metu.edu.tr/upload/12621435/index.pdf
https://hdl.handle.net/11511/26817

Collections

Graduate School of Natural and Applied Sciences, Thesis