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    Tytuł:
    Bistatic Noise SAR Experiment with a Non-Cooperative Illuminator
    Autorzy:
    Maślikowski, Ł.
    Kulpa, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/226516.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    SAR
    noise radar
    passive radar
    COTS
    Opis:
    The paper describes the results of a conception-stage experiment with a ground-based bistatic noise SAR (Synthetic Aperture Radar) demonstrator. Its aim was to research the ability of a simple Commercial-Off-The-Shelf (COTS) build system to provide a bistatic SAR image using non-cooperative illuminator. The noise signal used in the experiment is similar to a signal used in many transmission systems such as DVB-T that can be employed in passive bistatic radars. The paper presents the system setup, details of the measurement campaign, signal processing and the results of SAR imaging.
    Źródło:
    International Journal of Electronics and Telecommunications; 2011, 57, 1; 85-89
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reconstruction of the Reference Signal in DVB-T-based Passive Radar
    Autorzy:
    Baczyk, M. K.
    Malanowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/226577.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    passive radar
    passive coherent location
    DVB-T
    Opis:
    In the paper the problem of decoding of digital television signal and its reconstruction for the purpose of using it in passive radar is presented. The main focus is the reconstruction of the signal using a general purpose receiver, not dedicated to digital television signal reception. The performance of the proposed method is verified on simulated and real-life signals.
    Źródło:
    International Journal of Electronics and Telecommunications; 2011, 57, 1; 43-48
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Multichannel Receiver of the Experimental FM Based Passive Radar Using Software Defined Radio Technology
    Autorzy:
    Szlachetko, B.
    Lewandowski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/226436.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    SDR
    passive radar
    GNU Radio
    USRP
    Opis:
    In this paper we present results of research on multichannel receiver using Software Defined Radio technology. This receiver is a part of the experimental FM based passive radar being designed. The hardware platform of the receiver consists of the Universal Software Defined Radio Peripheral devices. In the paper we propose modifications of the USRP's FPGA configuration and GNU Radio code. These modifications allow for developing six/nine synchronous input channel receiver based on two/tree USRPs respectively. Issues of synchronization of separate USRP devices by assuring synchronous sampling were presented. We also propose the solution of the problem of the alignment of the data streams being sent from USRP devices via USB to the PC host.
    Źródło:
    International Journal of Electronics and Telecommunications; 2012, 58, 4; 301-306
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Trial Results on Bistatic Passive Radar Using Non-Cooperative Pulse Radar as Illuminator of Opportunity
    Autorzy:
    Samczyński, P.
    Wilkowski, M.
    Kulpa, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/227268.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bistatic radar
    non-cooperative radar
    passive radar
    passive coherent location
    PCL
    Opis:
    The paper presents the concept of passive radar exploiting the active Air Traffic Control (ATC) radar as the source of illumination, and the primary results of the measurement campaign carried out at the DSP Laboratory of the Warsaw University of Technology. The system, built using commercial off the shelf components, was able to detect and track airliners landing at Warsaw airport. To verify the system accuracy the IFF mode S messages were recorded, providing ground truth of the observed planes.
    Źródło:
    International Journal of Electronics and Telecommunications; 2012, 58, 2; 171-176
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quad channel software defined receiver for passive radar application
    Autorzy:
    Pető, T.
    Seller, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/141410.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    DPIS
    multichannel receiver
    passive radar
    PCL
    SDR
    Opis:
    In recent times the growing utilization of the electromagnetic environment brings the passive radar researches more and more to the fore. For the utilization of the wide range of illuminators of opportunity the application of wideband radio receivers is required. At the same time the multichannel receiver structure has also critical importance in target direction finding and interference suppression. This paper presents the development of a multichannel software defined receiver specifically for passive radar applications. One of the relevant feature of the developed receiver platform is its up-todate SoC (System on hip) based structure, which greatly enhance the integration and signal processing capacity of the system, all while keeping the costs low. The software defined operation of the discussed receiver system is demonstrated with using DVB-T (Digital Video Broadcast – Terrestrial) signal as illuminator of opportunity. During this demonstration the multichannel capabilities of the realized system are also tested with real data using direction finding and beamforming algorithms.
    Źródło:
    Archives of Electrical Engineering; 2017, 66, 1; 5-16
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Algorithm for Target Tracking Using Passive Radar
    Autorzy:
    Malanowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/226412.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    passive coherent location
    passive bistatic radar
    target tracking
    Opis:
    In the paper the problem of target tracking in passive radar is addressed. Passive radar measures bistatic parameters of a target: bistatic range and bistatic velocity. The aim of the tracking algorithm is to convert the bistatic measurements into Cartesian coordinates. In the paper a two-stage tracking algorithm is presented, using bistatic and Cartesian tracking. In addition, a target localization algorithm is applied to initialize Cartesian tracks from bistatic measurements. The tracking algorithm is tested using simulated and real data. The real data were obtained from an FM-based passive radar called PaRaDe, developed at Warsaw University of Technology.
    Źródło:
    International Journal of Electronics and Telecommunications; 2012, 58, 4; 345-350
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    System Concept of WIFI Based Passive Radar
    Autorzy:
    Rzewuski, S.
    Kulpa, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/227053.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    passive radar system
    WIFI signal decoding
    frame detection
    processing signal from wireless networks
    Opis:
    In this paper idea of passive radar system based on popular wireless networks commonly named WIFI is presented. In such an networks many transmitters operates in the same channel using multiple access. Wireless networks operating on frequencies 2.4GHz and 5GHz are very common today (IEEE 802.11 a/b/g/n). Classic passive radar determines bistatic distance and velocity by using cross-ambiguity function. To seek target position in XYZ space at least illumination of 3 different transmitters is required. In that paper it was assumed, that all transmitters operate on the same band frequency and the passive radar receiver has to couple each transmission burst with transmitter position by decoding the physical address of transmitter from captured data stream. Having most of the signal sources in our passive radar environment it is possible to detect and to localize objects of interest.
    Źródło:
    International Journal of Electronics and Telecommunications; 2011, 57, 4; 447-450
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A concept of a passive radar with quadrature microwave phase discriminators
    Autorzy:
    Rutkowski, A. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/221600.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    passive radar
    instantaneous frequency measurement
    IFM
    microwave phase discriminator
    phase of noise signal
    Opis:
    Passive radar does not have its own emitter. It uses so-called signals of opportunity emitted by non-cooperative illuminators. During the detection of reflected signals, a direct signal from a non-cooperative emitter is used as the reference signal. Detection of electromagnetic echoes is, in present day radars, performed by finding the maximum of the cross ambiguity function. This function is based on the multiplication of the received signal and the reference signal. Detection of echoes by means of a quadrature microwave phase discriminator QMPD was proposed in the work as an alternative solution for ambiguity function evaluation. This discriminator carries out vectorial summing of the received and the reference signals. The summing operations in QMPD are carried out with the aid of microwave elements and without the use of expensive digital signal processors. Definitions of the phase and phase difference of the so-called simple signals and noise signals were described. A proposal of a passive radar equipped with several independent quadrature microwave phase discriminators was presented. Ideas of algorithms of object detection and of the distance-to-object estimation designed for this radar have been also sketched.
    Źródło:
    Metrology and Measurement Systems; 2012, 19, 1; 95-104
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of passive and active radar systems
    Autorzy:
    Žáčik, N.
    Novák, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/253633.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Naukowo-Wydawniczy TTS
    Tematy:
    tracking system
    passive radar system
    active radar system
    radar network
    pasywny system radarowy
    aktywny system radarowy
    sieć radarowa
    Opis:
    This article presents the conclusion from my two theses, Comparison of tracking systems and Tracking systems. In the first part with title Comparison of tracking system, was my work focused to research of primary and secondary radar technology with very detailed description and principle of their use. This part of my research consists also from comparison of those two different types of technologies, their advantages and disadvantages. This research was the base stone for my second part of thesis with title: Tracking systems and conclusions, summarized in this article. The second part of thesis is more focused to civil and army passive radar and meteorological technology. The main topic is: how to build up the new radar network by using passive radar technology and what are the advantages and disadvantages of this concept, in comparison with actual primary and secondary radar network. I have chosen Slovak Republic for new network planning but this theory and research is applicable for all the other countries, with some minor changes. This topic is focused mainly to advantages of passive surveillance system and multilateration.
    Źródło:
    TTS Technika Transportu Szynowego; 2015, 12; 1709-1712, CD
    1232-3829
    2543-5728
    Pojawia się w:
    TTS Technika Transportu Szynowego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthetic Aperture Radar Using Emitters of Opportunity
    Autorzy:
    Serafin, P.
    Kawalec, A.
    Leśnik, C.
    Pyć, M.
    Pietrasiński, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/226408.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Synthetic Aperture Radar (SAR)
    passive SAR
    Opis:
    The capability of a radar imaging system to stay undetected while gathering data is one of the most desired for military reconnaissance systems. This is particularly difficult to achieve for synthetic aperture radar (SAR), that have to emit electromagnetic energy all the time during the operation and to move along a strictly defined route. Therefore the idea of a passive imaging system although encountering many constraints seems to be very interesting. The possibilities of a passive synthetic aperture radar system working with different types of emitters of opportunity are described in the paper. Impact of signal characteristics on image quality and geometry issues are discussed among others. Results of computer simulations of such a system implementing different imaging algorithms as well as the results of the experiment performed with passive SAR system model are presented.
    Źródło:
    International Journal of Electronics and Telecommunications; 2012, 58, 4; 357-362
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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