Ara es mostren els items 41-60 de 199

  • Calibración polarimetrica de un campo compacto de medida RCS 

    Broquetas Ibars, Antoni; Jofre Roca, Lluís (1991)
    Text en actes de congrés
    Accés obert
    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
    Accés obert
    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)
    Treball Final de Grau
    Accés restringit per acord de confidencialitat
  • Chirp Fourier Processor Design: A Time-domain Approach 

    Delgado Penin, José A.; Serrat Fernández, Juan (Institute of Electrical and Electronics Engineers (IEEE), 1990)
    Text en actes de congrés
    Accés obert
  • 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
    Accés obert
    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 ...
  • Compact acquisition system for high resolution radars 

    Snider Fiñana, Rodrigo (Universitat Politècnica de Catalunya, 2016-10)
    Projecte Final de Màster Oficial
    Accés obert
    Current analog data acquisition systems are complex systems based on high speed FPGA and microprocessors. Digital technologies are growing faster; microcontrollers are implementing more powerful peripherals, like ...
  • Comparative analyses of multi-frequency PSI ground deformation measurements 

    Sabater Cifuentes, José Raúl (Universitat Politècnica de Catalunya, 2012-03-29)
    Projecte/Treball Final de Carrera
    Accés restringit per decisió de l'autor
    [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
    Accés obert
    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)
    Text en actes de congrés
    Accés obert
  • Compresión digital de señales chirp. Compresión en coma fija 

    de los Reyes, Elías; Casadevall, Laura; Elias Fusté, Antonio; Ferrando, Miguel (1987)
    Text en actes de congrés
    Accés obert
    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
    Accés obert
    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 ...
  • Constraints in azimuth resolution by refocusing slowly moving targets from single-look complex SAR vignettes 

    Yam Ontiveros, Luis Eduardo; Mallorquí Franquet, Jordi Joan; Rius Casals, Juan Manuel (VDE Conference Publications, 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Accessing the raw data of spaceborne SAR systems is not always possible to refocus blurred SAR signatures of vessels. Instead, the single-look complex (SLC) data is usually more available, but since the vessel motion can ...
  • 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)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    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 ...
  • Data processing of a polarimetric X-Band phased array weather radar 

    Vilardell Sánchez, Jezabel (Universitat Politècnica de Catalunya, 2016-07)
    Treball Final de Grau
    Accés obert
    Weather forecast estimation has been a matter of analysis for many years. The arrival of dual polarization radars meant an improvement due to the incorporation of new variables. This project illustrates how to obtain the ...
  • Desarrollo de una aplicación para informar sobre carreteras usando social networks 

    Álvarez Morales, Ferran (Universitat Politècnica de Catalunya, 2015-04-24)
    Treball Final de Grau
    Accés obert
    [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)
    Treball Final de Grau
    Accés obert
  • Design and Analysis of Superresolution algorithm and signal separation technique for an OFDM-based MIMO radar 

    Nguyen, Thanh Thuy (Universitat Politècnica de Catalunya / Karlsruher Institut für Technology, 2012-10-31)
    Projecte Final de Màster Oficial
    Accés obert
    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 Catalunya / Technische Universität Darmstadt, 2013-09-10)
    Projecte/Treball Final de Carrera
    Accés obert
    [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 Catalunya / University of Massachusetts at Amherst. Microwave Sensing Laboratory, 2013-12-10)
    Treball Final de Grau
    Accés obert
    [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 Catalunya / Technische Universität Darmstadt, 2013-09-26)
    Projecte/Treball Final de Carrera
    Accés obert
    [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) ...