Now showing items 1-7 of 7

  • Distributed Extended Kalman Filter for Position, Velocity, Time, Estimation in Satellite Navigation Receivers 

    Jakubov, O.; Kovar, P.; Kacmarik, P.; Vejrazka, F. (Společnost pro radioelektronické inženýrství, 2013-09)
    Common techniques for position-velocity-time estimation in satellite navigation, iterative least squares and the extended Kalman filter, involve matrix operations. The matrix inversion and inclusion of a matrix library ...
  • The DVB-T-Based Positioning System and Single Frequency Network Offset Estimation 

    Karasek, R.; Vejrazka, F. (Společnost pro radioelektronické inženýrství, 2018-12)
    As position information becomes more and more important in many fields of technology it is advantageous to recognize it in scenarios where satellite-based systems fail. Such a case is the scenario inside buildings where ...
  • Economic Galileo E5 Receiver 

    Kovar, P.; Kacmarik, P.; Vejrazka, F. (Společnost pro radioelektronické inženýrství, 2012-04)
    The Galileo system introduces an extremely wideband civil E5 signal for high precision navigation. The structure of the receiver for the E5 signal is complicated due to the signal complexity and the large bandwidth. It is ...
  • Modulation Schemes for Wireless Access 

    Javornik, T.; Kandus, G.; Vejrazka, F. (Společnost pro radioelektronické inženýrství, 2000-12)
    Four modulation schemes, namely minimum shift keying (MSK), Gaussian minimum shift keying (GMSK), multiamplitude minimum shift keying (MAMSK) and π/4 differential quadrature phase shift keying (π/4-QPSK) are described and ...
  • Precise Characterization and Multiobjective Optimization of Low Noise Amplifiers 

    Dobes, J.; Michal, J.; Popp, J.; Cerny, D.; Grabner, M.; Vejrazka, F.; Kakona, J.; Matejka, S. (Společnost pro radioelektronické inženýrství, 2015-09)
    Although practically all function blocks of the satellite navigation receivers are realized using the CMOS digital integrated circuits, it is appropriate to create a separate low noise antenna preamplifier based on a low ...
  • Universality and Realistic Extensions to the Semi-Analytic Simulation Principle in GNSS Signal Processing 

    Jakubov, O.; Kacmarik, P.; Kovar, P.; Vejrazka, F. (Společnost pro radioelektronické inženýrství, 2012-06)
    Semi-analytic simulation principle in GNSS signal processing bypasses the bit-true operations at high sampling frequency. Instead, signals at the output branches of the integrate&dump blocks are successfully modeled, thus ...
  • The Witch Navigator - A Low Cost GNSS Software Receiver for Advanced Processing Techniques 

    Jakubov, O.; Kovar, P.; Kacmarik, P.; Vejrazka, F. (Společnost pro radioelektronické inženýrství, 2010-12)
    The developement of advanced GNSS signal processing algorithms such as multi-constellation, multi-frequency and multi-antenna navigation requires an easily reprogrammable software defined radio solution. Various receiver ...