Sökning: "Gunshot Detection"

Hittade 5 uppsatser innehållade orden Gunshot Detection.

  1. 1. Gunshot Detection and Direction of Arrival Estimation Using Machine Learning and Received Signal Power

    Master-uppsats, Linköpings universitet/Institutionen för systemteknik

    Författare :David Grahn; Timothy Cooper; [2023]
    Nyckelord :Direction of arrival; Machine Learning; Received signal power; Project Ngulia; Gunshot Detection; Poaching;

    Sammanfattning : Poaching is a persistent issue that threatens many of earth’s species including therhino. The methods used by poachers are varied, but many use guns to carry outtheir illegal activities. Gunfire is extremely loud and can be heard for kilometres. LÄS MER

  3. 2. Gunshot Detection from Audio Streams in Portable Devices

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Linnea Bokelund; Ellen Grane; [2022]
    Nyckelord :machine learning; gunshot detection; convolutional neural networks; sound event detection; portable devices; Technology and Engineering;

    Sammanfattning : Machine learning and artificial neural networks can be used to classify or detect specific sound events in audio signals. Gunshot detection is one use case for such networks and can be used to help law enforcement by alerting officers or triggering camera recordings. LÄS MER

  4. 3. Development of a Neutron Activation Analysis station at the Lund Ion Beam Analysis Facility

    Kandidat-uppsats, Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Författare :Josephine Lindsey-Clark; [2021]
    Nyckelord :Neutron Activation Analysis; NAA; European Spallation Source; ESS; Lund Ion Beam Analysis Facility; LIBAF; Gamma-Ray Spectra; Physics and Astronomy;

    Sammanfattning : This report outlines the first stages of the development of the Neutron Activation Analysis station at the Lund Ion Beam Analysis Facility in the Division of Nuclear Physics, Lund University. The motivation for this project is to use the Neutron Activation Analysis detection technique for environmental monitoring around the European Spallation Source, soon to come into operation. LÄS MER

  5. 4. Detection and Localisation of Gunshots Using Sound Data

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Martin Chan; Sofie Karlsson; [2018]
    Nyckelord :Mathematics and Statistics;

    Sammanfattning : The goal of this master's thesis is to detect and position sharp sounds using Axis speakers with built-in microphones. Sharp sounds of special interest are gunshots. The system needs at least five speakers to function and is designed for usage in indoor environments. LÄS MER

  7. 5. Detection of gunshot residue and explosives using hybrid graphene/quantum dot based sensors

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Elsa de Geer; [2017]
    Nyckelord :Graphene; quantum dots; explosives; gunshot residue; fluorescence; quenching; Technology and Engineering;

    Sammanfattning : This master thesis investigates the use of chemically exfoliated graphene, CdSe/CdS/ZnS quantum dots and graphene quantum dots for fluorescence based detection of gunshot residue and explosives. Specifically, nitroglycerine is chosen as the target substance in gunshot residue and the nitroaromatic compounds trinitrotoluene and dinitrotoluene are chosen as target explosives. LÄS MER