Sökning: "jammer"

Visar resultat 1 - 5 av 9 uppsatser innehållade ordet jammer.

  1. 1. Design of a metal detector

    Master-uppsats, Högskolan i Gävle/Avdelningen för elektronik, matematik och naturvetenskap

    Författare :Ammar Haider; [2018]
    Nyckelord :Antenna; Radar; Frequency;

    Sammanfattning : Electromagnetic wave propagation is a well-known phenomenon in the scientific world and when the first telescope was built method of sensing objects excelled afterwords. Research in optical system and infrared is growing day by day but radar system still dominates the world in object sensing. LÄS MER

  3. 2. Methods for locating signal jammers with a UAV

    Master-uppsats, Linköpings universitet/Fysik och elektroteknik; Linköpings universitet/Tekniska fakulteten

    Författare :Andreas Höggren; Love Lindmark; [2018]
    Nyckelord :UAV; Signal jammer; RSSI; Signal reflection;

    Sammanfattning : Wireless communication today is a modern way to transport data from one location to another. One of the drawbacks of this feature is that a signal jammer can disrupt communications between the receiver and transmitter since the radio waves travel in the open air. This drawback can be exploited in both military and civilian applications. LÄS MER

  4. 3. Evaluating LoRa and WiFi Jamming

    Kandidat-uppsats, Mittuniversitetet/Avdelningen för informationssystem och -teknologi

    Författare :Albert Öst; [2018]
    Nyckelord :IoT; LoRa; WiFi; Arduino; HackRF One; RSSI; RTT; Packet loss;

    Sammanfattning : Internet of Things changes our world with everything we have around us, our everyday things will be connected to the Internet. According to experts, in two years there will be up to 29 billion devices connected to the Internet. LÄS MER

  5. 4. Crowdsourcing GNSS Jamming Detection and Localization

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Luka Strizic; [2017]
    Nyckelord :gnss; gps; galileo; glonass; beidou; crowdsourcing; smartphones; android; e911; j911; jamming; jammer; detection; localization; pdoa; tdoa;

    Sammanfattning : Global Navigation Satellite Systems (GNSS) have found wide adoption in various applications, be they military, civilian or commercial. The susceptibility of GNSS to radio-frequency interference can, thus, be very disruptive, even for emergency services, therefore threatening people's lives. LÄS MER

  7. 5. Detection and Classification of Interference in Mobile Communication Systems

    Master-uppsats, Linköpings universitet/Kommunikationssystem

    Författare :Christoffer Ring; [2015]
    Nyckelord :GSM; Interference; Impulsiveness Ratio; USRP; GNU Radio;

    Sammanfattning : The usage of wireless technology has in the past decade vastly increased and it continues to do so as well. Because of this, we become more and more reliant on this considerably fragile technology. Wireless technology, which uses radio waves to transmit data from one point to another can easily be interfered by radio jammers. LÄS MER