Ara es mostren els items 156-175 de 199

  • El Radar : de dónde viene y hacia dónde va 

    Broquetas Ibars, Antoni (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1994)
    Article
    Accés obert
  • Radar biestàtic sincronitzat per Hitchhiking 

    Pous i Sabadí, Carles; Aguasca Solé, Alberto; Elias Fusté, Antoni; Broquetas Ibars, Antoni (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1993)
    Article
    Accés obert
  • Radar Doppler de bajo coste como sensor de alarma en tecnología impresa 

    de los Reyes, Elías; Ferrando Bataller, Miquel; Elias Fusté, Antonio; Corbella Sanahuja, Ignasi (1981)
    Text en actes de congrés
    Accés obert
    General configurations for homodyne Doppler Radars for intruder detection are presented. A prototype on microstrip technology has been realized which exhibits excellent performances at a low component cost. This prototype ...
  • Radar en Banda W (94 GHz) para aplicaciones meteorológicas 

    Zhu, Yanfang (Universitat Politècnica de Catalunya, 2015-06)
    Treball Final de Grau
    Accés obert
    design the radar system which operates at 94GHz for measurements of clouds
  • Radar system based on Frequency-Modulated Continuous Wave transmission 

    Cañellas Cruz, Ferran (Universitat Politècnica de Catalunya, 2016-06)
    Treball Final de Grau
    Accés obert
    The appearance of the first wireless sensors attracted the idea of using this technology to detect and monitor human vital signs. With this, lots of non-medical applications became possible, like detecting trapped victims ...
  • Radiometric Sensitivity Computation in Aperture Synthesis Interferometric Radiometry 

    Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Torres Torres, Francisco (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-03-31)
    Article
    Accés obert
    This paper is concerned with the radiometric sensitivity computation of an aperture synthesis interferometric radiometer devoted to Earth observation. The impact of system parameters and the use of simultaneous redundant ...
  • Radiometric sensitivity computation in aperture synthesis interferometric radiometry 

    Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Torres Torres, Francisco (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-03-01)
    Article
    Accés obert
    This paper is concerned with the radiometric sensitivity computation of an aperture synthesis interferometric radiometer devoted to Earth observation. The impact of system parameters and the use of simultaneous redundant ...
  • Randomizing ties in a sign radar detector 

    Figueiras Vidal, Aníbal R.; Mariño Acebal, José Bernardo; Lagunas Hernandez, Miguel A.; García Gómez, Ramón; Martín Funke, Enrique (Imperial College Press (ICP), 1981)
    Text en actes de congrés
    Accés obert
    A general formulation to consider the effects of typical randomization methods (RMs) for a digital application of Generalized Sign Test (GST) detector in Radar is introduced. A first approximation leads us to some basic ...
  • Receptor biestático sin enlace dedicado con el transmisor 

    Aguasca Solé, Alberto; Broquetas Ibars, Antoni; Elias Fusté, Antonio (Unión Científica Internacional de Radio (URSI), 1990)
    Text en actes de congrés
    Accés obert
    This paper presents an introduction to the study and development of a new concept of Bistatic Radar Receiver, which eliminates any kind of direct microwave or optical fiber link between them. It is based on discret phase-lock ...
  • Reconstrucción de la reflectividad de blancos radar 

    Broquetas Ibars, Antoni; Rius Casals, Juan Manuel; Fabregas Canovas, Francisco Javier; Galmes, S; Jofre Roca, Lluís (Unión Científica Internacional de Radio (URSI), 1989)
    Text en actes de congrés
    Accés obert
    Processing radar cross section data is possible to image sorne properties of a target. The paper presents two radar imaging algorithms allowing the reconstruction of reflectivi ty distribution of the target or i ts ...
  • Refined estimation of time-varying baseline errors in airborne SAR interferometry 

    Reigber, Andreas; Prats Iraola, Pau; Mallorquí Franquet, Jordi Joan (IEEE, 2006-01-31)
    Article
    Accés obert
    The processing of airborne synthetic aperture radar (SAR) data requires a precise compensation of the deviations of the platform movement from a straight line. This is usually carried out by recording the trajectory with ...
  • Relationship between aquarius L-band active and passive multi-year observations over Australia 

    de Quadras Gambús, María (Universitat Politècnica de Catalunya, 2016)
    Projecte/Treball Final de Carrera
    Accés obert
    Realitzat a/amb: Monash University
    The aim of this Thesis is to further our understanding of the geophysical information that can be estimated from active and passive L-band sensors. All data was obtained from NASA's satellite Aquarius durin the period Sept. ...
  • Remote bistatic receiver synchronization using DLL techniques 

    Aguasca Solé, Alberto; Broquetas Ibars, Antoni; Fernández de Muniain Comajuncosa, Javier (Institute of Electrical and Electronics Engineers (IEEE), 1992)
    Text en actes de congrés
    Accés obert
    Pulse to pulse staggering in the pulse reference interval (PRI), usually used to increase the radar unambiguous range and MTI blind speeds, complicates notably the synchronization of the pulsed waveform. A free running ...
  • Resolution in evaluation of structural elements by using ground-penetrating radar 

    Pérez Gracia, María de la Vega (2009-10-29)
    Comunicació de congrés
    Accés obert
    Ground-penetrating radar (GPR) is a non-invasive geophysical technique widely used in civil engineering, archaeology and shallow geology. Radar images of the inner media provides information about inner.
  • Resonant pulse-shaping power supply for radar transmitters 

    Bell Rodriguez, Miguel Victoria Ramo; Roberg, Michael; Pack, Riley; Garcia Fernandez, Pablo; Alarcón Cot, Eduardo José; Popoviç, Zoya; Maksimovic, Dragan (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The final radiofrequency power amplifier (PA) of a radar transmitter module is a large factor in system efficiency. Typical radar transmitter signals are frequency-modulated with constant-amplitude pulse envelopes in order ...
  • Results on spatial-temporal atmospheric phase screen retrieval from long-term GEOSAR acquisition 

    Ruiz Rodon, Josep; Broquetas Ibars, Antoni; Makhoul Varona, Eduardo; Monti Guarnieri, Andrea; Rocca, Fabbio (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this paper, a high integration gain GEOSAR mission for Earth imaging is presented. The spatial-temporal atmospheric decorrelation issues of a long integration time GEOSAR mission must be carefully studied. The ...
  • RF interference analisys in aperture synthesis interferometric radiometers: Application to L-band MIRAS instrument 

    Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Bará Temes, Francisco Javier; Capdevila Vives, Joan (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-03-31)
    Article
    Accés obert
    Current spaceborne radiometers do not achieve the required spatial resolution demanded by the scientific community due to antenna-size technological limitations. In recent years, several space agencies have been studying ...
  • Robust array configuration for a microwave interferometric radiometer: application to the geoSTAR project 

    Torres Torres, Francisco; Tanner, Alan B.; Brown, S. T.; Lambrigsten, Bjorn H. (IEEE Institute of Electrical and Electronics Engineers, 2007-01-31)
    Article
    Accés obert
    The Geostationary Synthetic Thinned Array Radiometer represents a promising new approach to microwave atmospheric sounding from geostationary orbit based on passive interferometry. One of the major concerns about the ...
  • SAR Interferometric phase noise reduction using wavelet transform 

    López Martínez, Carlos; Cànovas, Xavier Fàbregas; Chandra, A. M. (IEE-INST ELEC ENG, 2001-05-31)
    Article
    Accés obert
    The problem of synthetic aperture radar interferometric phase noise reduction is addressed. A new technique based on discrete wavelet transforms is presented. This technique guarantees high resolution phase estimation ...
  • Simulació estadística de clutter marí amb models de distribució K 

    González Moragas, Oriol (Universitat Politècnica de Catalunya, 2011-09-07)
    Projecte/Treball Final de Carrera
    120 months embargo
    English: The aim of this project is the simulation of the radar echo signal scattered by the sea surface which is called "Sea clutter". This project is related with the SAR MTI systems which are a type of radar systems ...