Sökning: "Doppler Processing."

Visar resultat 1 - 5 av 21 uppsatser innehållade orden Doppler Processing..

  1. 1. Waveform agility for robust radar detection and jamming mitigation

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fasta tillståndets elektronik

    Författare :Karl-Johan Hällgren; [2021]
    Nyckelord :radar; electronic warfare; jamming; jamming resistance; waveforms; phase codes; MIMO; radar; telekrig; störning; störskydd; vågformer; faskoder; MIMO;

    Sammanfattning : In this report metrics for jamming resistance and radar performance of waveform sets are described and developed, and different sets of waveforms are optimized, evaluated and compared. It is shown that without additional processing or PRI jitter, waveform sets can reach jamming resistance a few dB worse than what is provided by PRI jitter alone, and together with PRI jitter a few dB better. LÄS MER

  3. 2. LPI waveforms for AESA radar

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fasta tillståndets elektronik

    Författare :Andreas Sjöberg; [2020]
    Nyckelord :Radar LPI waveform AESA;

    Sammanfattning : The purpose of low probability of intercept (LPI) radar is, on top of the standard requirements on a radar, to remain undetected by hostile electronic warfare (EW) systems. This can be achieved primarily by reducing the amount of radiated power in any given direction at all times and is done by transmitting longer modulated pulses that can then be compressed digitally in order to retain range resolution. LÄS MER

  4. 3. Clutter Removal in Single Radar Sensor Reflection Data via Digital Signal Processing

    Master-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Författare :Mohammadreza Kazemisaber; [2020]
    Nyckelord :Surveillance Radar; Ultra-Wideband Radar; Clutter Reduction; FMCW radar; Digital signal processing; Moving target detection; Doppler Processing.;

    Sammanfattning : Due to recent improvements, robots are more applicable in factories and various production lines where smoke, fog, dust, and steam are inevitable. Despite their advantages, robots introduce new safety requirements when combined with humans. LÄS MER

  5. 4. Doppler Wheel for Emulation of Automotive Radar Target

    Magister-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Mohammed ALRimawi; [2019]
    Nyckelord :Radar; Doppler; emulator; speed controller; microcontroller; automotive; demonstration; signal processing; testing;

    Sammanfattning : Automotive radar is an emerging field of research and development. Technological ‎advancements in this field will improve safety for vehicles, pedestrians, and ‎bicyclists, and enable the development of autonomous vehicles. Usage of the ‎Automotive radar is expanding ‎in car and road areas to reduce collisions and ‎accident. LÄS MER

  7. 5. Developing a New Method for MRI Triggering Using Doppler Ultrasound

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Usama Gazay; [2019]
    Nyckelord :;

    Sammanfattning : Purpose: Magnetic Resonance Imaging (MRI) is a medical imaging technique used in radiology to produce high quality images of the anatomy and the physiological processes of the body. Cardiac gating is a triggering system used for the MRI scanner to synchronize the MRI scanner with the cardiac cycle of the patient while imaging. LÄS MER