Multi shooter localization with acoustic sensors

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mühendislik Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümü, Türkiye

Tezin Onay Tarihi: 2017

Öğrenci: ÇAĞLAR AKMAN

Danışman: MEHMET KEMAL LEBLEBİCİOĞLU

Özet:

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.