Now showing items 27-46 of 149

  • Calibración polarimetrica de un campo compacto de medida RCS 

    Broquetas Ibars, Antoni; Jofre Roca, Lluís (1991)
    Conference report
    Open Access
    A polarimetric calibrarion procedure for a compact range RCS measurement system is presented. This merhod is based on a marhematical model which includes al! possible errors. Some RCS measurements and ISAR images are included.
  • CFAR data fusion center with inhomogeneous receivers 

    Elias Fusté, Antonio; Broquetas Ibars, Antoni (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1992-01-02)
    Article
    Open Access
    Detection systems with distributed sensors and data fusion are increasingly used by surveillance systems. A system formed by N inhomogeneous constant false alarm rate (CFAR) detectors (cell-averaging (CA) and ordered ...
  • Characterization of a radar for autonomous vehicle location systems 

    Flores Abad, Ismael (Universitat Politècnica de Catalunya, 2015-10-14)
    Bachelor thesis
    Restricted access - confidentiality agreement
  • Circular synthetic aperture radar (C-SAR) system for ground based applications 

    Broquetas Ibars, Antoni; Porrata-Dòria i Yagüe, Ramir de; Sagués Piella, Lluís; Fabregas Canovas, Francisco Javier; Jofre Roca, Lluís (IEE-INST ELEC ENG, 1997-05-01)
    Article
    Open Access
    The authors present an SAR system capable of obtaining radar images from measurements carried out with antennas that describe a circular trajectory centred outside the target region. The analytical formulation of the ...
  • Comparative analyses of multi-frequency PSI ground deformation measurements 

    Sabater Cifuentes, José Raúl (Universitat Politècnica de Catalunya, 2012-03-29)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    [ANGLÈS] In recent years many new developments have been made in the field of SAR image analysis. The diversity of available SAR imagery allows a wider range of applications to be covered in the domain of risk management ...
  • Comparison of topography- and aperture-dependent motion compensation algorithms for airborne SAR 

    Prats Iraola, Pau; Câmara de Macedo, Karlus A.; Reigber, Andreas; Scheiber, Rolf; Mallorquí Franquet, Jordi Joan (IEEE, 2007-07-31)
    Article
    Open Access
    This letter presents a comparison between three Fourier-based motion compensation (MoCo) algorithms for airborne synthetic aperture radar (SAR) systems. These algorithms circumvent the limitations of conventional MoCo, ...
  • Compresión de pulsos: Análisis de formas de onda no lineales 

    de los Reyes, Elías; Clavera, Jordi; Elias Fusté, Antonio (Universidad Politécnica de Madrid (UPM), 1988)
    Conference report
    Open Access
  • Compresión digital de señales chirp. Compresión en coma fija 

    de los Reyes, Elías; Casadevall, Laura; Elias Fusté, Antonio; Ferrando, Miguel (1987)
    Conference report
    Open Access
    It is presented the simulation of a fixed point digital matched filter, in order to estimate their perfomances.
  • Considerations about antenna pattern measurements of 2-D aperture synthesis radiometers 

    Camps Carmona, Adriano José; Skou, Neils; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria (IEEE, 2006-04-30)
    Article
    Open Access
    Accurate measurement of the antenna voltage patterns of large-aperture synthesis radiometers is critical in order to achieve good radiometric accuracy, and a very time consuming and expensive task. Measurement requirements ...
  • DA-GLRT burst detection and synchronization based on a chirp-like preamble 

    Rodríguez, E; Lamarca Orozco, M. Meritxell; López Salcedo, José Antonio; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio J.; Jalón, A (2008)
    Conference report
    Restricted access - publisher's policy
    A specific preamble for the tasks of signal detection and synchronization in burst digital communications is presented. The preamble resembles a chirp signal used in RADAR applications. Its main benefit is that it allows ...
  • Desarrollo de una aplicación para informar sobre carreteras usando social networks 

    Álvarez Morales, Ferran (Universitat Politècnica de Catalunya, 2015-04-24)
    Bachelor thesis
    Open Access
    [CASTELLÀ] Desarrollo de una aplicación móvil que informa en tiempo real sobre la localización de radares. La información necesaria se obtiene mediante el análisis de las publicaciones de la red social Twitter.
  • Desenvolupament de codis d'anàlisi de la dispersió electromagnètica deguda a blancs RADAR molt petits 

    Crespí Font, Francisca (Universitat Politècnica de Catalunya, 2010-02-05)
    Bachelor thesis
    Open Access
  • Design and Analysis of Superresolution algorithm and signal separation technique for an OFDM-based MIMO radar 

    Nguyen, Thanh Thuy (Universitat Politècnica de CatalunyaKarlsruher Institut für Technology, 2012-10-31)
    Master thesis
    Open Access
    Recently, the concept of MIMO radar has been proposed. MIMO radar has the capability to transmit orthogonal (or incoherent) waveforms at multiple transmit antennas. It offers promising potentials for multipath fading, ...
  • Design of a Chipless Harmonic Radar Temperature Sensor 

    Romeu Gómez, Jordi (Universitat Politècnica de CatalunyaTechnische Universität Darmstadt, 2013-09-10)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] Passive chipless wireless sensor tags are used in environments with specific conditions where chips, wires or power supplies cannot be used. Nowadays a huge part of these sensors use Surface Acoustic Wave (SAW) ...
  • Design of a reflected power canceller for single-antenna FMC radars 

    Amézaga Sarries, Adrià (Universitat Politècnica de CatalunyaUniversity of Massachusetts at Amherst. Microwave Sensing Laboratory, 2013-12-10)
    Bachelor thesis
    Open Access
    [ANGLÈS] Frequency Modulated Continuous Wave radars suffer from an undesirable effect called transmitter leakage. The power leak between transmitter and receiver due to the lack isolation impairs reception performance. The ...
  • Design of a Temperature Sensitive Band Pass Filter for a Chipless Harmonic Radar Sensor 

    Romeu Gómez, Jordi (Universitat Politècnica de CatalunyaTechnische Universität Darmstadt, 2013-09-26)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] Passive chipless wireless sensor tags are used in environments with specific conditions where chips, wires or power supplies cannot be used. Nowadays a huge part of these sensors use Surface Acoustic Wave (SAW) ...
  • Design, fabrication and measurements of an s-band radar in an airborne platform 

    RuÍz Carregal, Gerard (Universitat Politècnica de Catalunya, 2014-10-24)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] The thesis describes the design and fabrication of an S-band radar. Moreover, discusses the results obtained from ground measurements, as well as measurements taken from an airborne platform.
  • Designing the quantizing step for a digital generalized sign test detector applied to Radar a first approach 

    Figueiras Vidal, Aníbal R.; García Gómez, Ramón; Mariño Acebal, José Bernardo; Lagunas Hernandez, Miguel A.; Martín Funke, Enrique (Institute of Electrical and Electronics Engineers (IEEE), 1981)
    Conference report
    Open Access
  • Detección de helicópteros mediante radares pulsados. Consideraciones de diseño 

    de los Reyes, Elías; Escanes, Juan Carlos; Elias Fusté, Antonio (Universidad Politécnica de Madrid (UPM), 1988)
    Conference report
    Open Access
    En el presente artículo se presenta en primer lugar la problemática en la detección de helicópteros y se propone un método para detectarlos basado en el efecto Doppler creado por el rotor principal del helicóptero. Para ...
  • Detección de movimiento mediante técnicas radar CW-FM en banda W 

    Vargas González, Daniel (Universitat Politècnica de Catalunya, 2014-03)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] Integration of a SAR adquisition system using a FM-CW 94 GHz radar and test the system by different measurement campaigns with the aim of detecting micrometic displacements using a phase analysis of the recived signal