Sökning: "noise jamming"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden noise jamming.

  1. 1. Evaluation of FMCW Radar Jamming Sensitivity

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och system

    Författare :Ludvig Snihs; [2023]
    Nyckelord :FMCW; FMCW radar; radar; frequency-modulated radar; noise jamming; frequency-modulated continuous wave radar; FMCW Jamming; Jamming; Pulse Train; Pulse Jamming; Spoofing Attack; Spoofing; Deception; Repeater Jamming; Repeater; Automotive Radar; CFAR; sensor jamming; constant false alarm rate; electronic warfare; EW; FMCW; FMCW radar; frekvensmodulerad dopplerradar; dopplerradar; radar; brusstörning; radarstörning; pulsstörning; pulståg; falskmål; vilseledning; repeterstörning; bilradar; sensorstörning; CFAR;

    Sammanfattning : In this work, the interference sensitivity of an FMCW radar has been evaluated by studying the impact on a simulated detection chain. A commercially available FMCW radar was first characterized and its properties then laid the foundation for a simulation model implemented in Matlab. LÄS MER

  3. 2. Examining the Effects of AWGN Jamming on a Tactical Data Link Communication System

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Noor Schroen; [2023]
    Nyckelord :Tactical Data Links; VOACAP; HF; AWGN; Jamming; Tactical Data Links; VOACAP; HF; AWGN; Jamming; Tactical Data Links; VOACAP; HF; AWGN; Jamming;

    Sammanfattning : This master thesis investigates the jamming of Tactical Data Links (TDLs). The goal is to make a model that is capable of giving an overview of a communication system under jamming conditions, offering the user a suggestion for the best coding scheme and modulation to use in any given situation. LÄS MER

  4. 3. The Effect of Distortions Induced by Adaptive Antenna Arrays in GNSS Applications

    Master-uppsats, Linköpings universitet/Kommunikationssystem; Linköpings universitet/Tekniska fakulteten

    Författare :Emma Beskow; [2022]
    Nyckelord :GNSS; GPS; Jamming; Beamforming; Adaptive antenna arrays; Frequency response distortions;

    Sammanfattning : Global Navigation Satellite Systems (GNSS) are vital tools for accurate navigation and timing for both civil and military use. Due to the low power of the GNSS signals, these systems are sensitive to interference attacks. For wideband GNSS jamming, adaptive antenna arrays are commonly used to suppress interference. LÄS MER

  5. 4. Elektronisk krigföring mot sensorer i varnar- och motverkanssystem

    Uppsats för yrkesexamina på grundnivå, Försvarshögskolan

    Författare :Jesper Nilsson; [2021]
    Nyckelord :APS; DAS; Electronic warfare; Jamming; Arena; Afghanit; VMS; APS; DAS; aktiv radarstörning; telekrig; Arena; Afghanit; varnare och motverkanssystem;

    Sammanfattning : This report on the subject of Systems Science for Defence and Security, aims to study the possibility for electronic warfare (EW) against the radar in active protection system (APS) on ground combat vehicles. The goal of the EW is to ensure effect of current anti-tank systems against an enemy equipped with APS. LÄS MER

  7. 5. Time Synchronization of TDOA Sensors Using a Local Reference Signal

    Master-uppsats, Linköpings universitet/Kommunikationssystem

    Författare :Alfred Hult; [2020]
    Nyckelord :TDOA; synchronization; sensor network; correlation; time-delay estimation; estimation; UAV; GPS; timing signal;

    Sammanfattning : Synchronization of distributed time difference of arrival (TDOA) sensor networks can be performed using reference signals from GPS satellites. This method provides high accuracy, but is vulnerable to jamming, and is not reliable enough to be used in military applications. LÄS MER