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    Item type:Publication, Access status: without files ,
    Air target detection using pulsar FSR
    (IEEE, 2017-08-10)
    Kabakchiev, Hristo
    ;
    Behar, Vera
    ;
    Garvanov, Iwan
    ;
    Kabakchieva, Dorina
    ;
    Kabakchiev, Avgust
    The feasibility of Forward Scatter Radar (FSR) that exploits pulsars as transmission sources for the purpose of air targets detection is examined. We theoretically calculated the power budget for air target detection using such a FSR system with the higher-gain radio telescopes used as receivers. The numerical results are obtained for three known radio telescopes and three pulsars..
    Publicationtype: Conference Paper
      147
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    Item type:Publication, Access status: without files ,
    Data mining classification of cars based on GPS shadows in Forward Scatter Radar systems
    (IEEE, 2017-08-10)
    Kabakchiev, Christo
    ;
    Kabakchieva, Dorina
    ;
    Garvanov, Iwan
    ;
    Behar, Vera
    ;
    Kabakchiev, Kalin
    The goal of this paper is to introduce a new concept - using Data Mining approach for radar classification of vehicles, based on their GPS shadow signals detected in a GPS L1-based Forward Scatter Radar (FSR) system. Real data is used for the current experiments, recording the GPS radio shadows of several moving vehicles with commercial non-professional GPS equipment. The records are further processed in MATLAB computational environment in order to obtain the estimated parameters of the GPS shadows. Data Mining approach is then implemented for classifying the cars, comparing classifiers generated with different classification algorithms -A decision tree, a neural network, and a Bayesian classifier, for two different variants of the class variable, taking three or two possible values. The best results are achieved for the two values of the class variable and the best performing classifiers are the neural networks..
    Publicationtype: Conference Paper
      130
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    Item type:Publication, Access status: without files ,
    Experimental parameter estimation of vehicles GPS shadows by Forward scattering systems
    (IEEE, 2017-08-10)
    Kabakchiev, Hristo
    ;
    Garvanov, Iwan
    ;
    Behar, Vera
    ;
    Kabakchieva, Dorina
    ;
    Kabakchiev, Kalin
    In this paper, we conduct an experimental study with the aim to obtain a large number of estimates of various parameters characterizing the GPS shadows created by three types of moving vehicles. The experimental cars have a similar size and therefore, the obtained estimates have similar values. From the results, it can be seen that the cars can be differentiated by means of their shadow parameters..
    Publicationtype: Conference Paper
      152