Ara es mostren els items 1-20 de 62

  • A comparison of different techniques for atmospheric artefact compensation in GBSAR differential acquisitions 

    Pipia, Luca; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; Mallorquí Franquet, Jordi Joan (IEEE, 2006)
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    In this paper, a comparison of different techniques for compensating the atmospheric artifacts in Ground-Based SAR zero-baseline acquisitions at X-Band is presented. The way the fluctuation of atmospheric parameters like ...
  • Active zone self-similarity of fractal sierpinski antenna verified using infra-red thermograms 

    González, J.M.; Navarro Bernal, Manuel; Puente Baliarda, Carles; Romeu Robert, Jordi; Aguasca Solé, Alberto (Institution of Electrical Engineers, 1999-08)
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    The surface current distribution of a Sierpinski fractal antenna shows a self-similar behaviour determined by the self-similar properties of its geometry. The application of infra-red thermography to electromagnetic near ...
  • Advanced polarimetric optimization for DInSAR applications with Ground-Based SAR 

    Iglesias González, Rubén; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; López Martínez, Carlos; Alonso González, Alberto (2012)
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    In this paper, the applications of advanced polarimetric optimization techniques for Differential Interferometric SAR (DInSAR) pixel selection are explored in the framework of deformation map retrieval in landslides. ...
  • Altimetry study performed using an airborne GNSS-reflectometer 

    Rodríguez Álvarez, Nereida; Acevo Herrera, René; Aguasca Solé, Alberto; Valencia Domènech, Enric; Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena; Bosch Lluís, Xavier; Ramos Pérez, Isaac (2010)
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    The Global Navigation Satellite Signals Reflections (GNSSR)techniques have been widely used for remote sensing purposes retrieving geophysical parameters over different types of surfaces. Over the ocean, altimetry or sea ...
  • An example from the Basic Engineering Project subject at the UPC Telecom-BCN School: learning radiofrequency links, antennas and amplifiers with the help of recycled materials 

    Rocadenbosch Burillo, Francisco; Aguasca Solé, Alberto; Broquetas Ibars, Antoni; Camps Carmona, Adriano José (2018)
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  • Aplicación de los generadores de forma de onda arbitraria en la simulación de señales radar 

    Broquetas Ibars, Antoni; Aguasca Solé, Alberto; Elias Fusté, Antonio (1992)
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  • Aplicacion de sistemas Dll en la recuperacion de sincronismo de señales radar con Staggering 

    Aguasca Solé, Alberto (1991)
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    In a bistaric radar receiver we need an accurate synchronism with the transmitted signal in arder to get the position of targets from the received echoes. Here we have a system based on delay-lock techniques which allows ...
  • Aplicación de sistemas PLL en la recuperación del sincronismo de portadora para un radar Biestatico coherente 

    Aguasca Solé, Alberto (1991)
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    A bistatic radar, which allows to process the target velocity information, must synchronize the phase and the frequency of the transmitted carrier to demodulate coherently the radar echoes. The paper presents a PLL system ...
  • Application of high resolution spotlight TerraSAR-X data to landslide monitoring 

    Iglesias González, Rubén; Monells Miralles, Daniel; Centolanza, Giuseppe; Mallorquí Franquet, Jordi Joan; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; López Martínez, Carlos (2012)
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    This paper seeks to demonstrate that radar-based remote sensing techniques, especially those based on orbital sensors, can be as effective as the conventional geotechnical and discrete GPS measurement ones for the detection ...
  • Application of the conjugate gradient method to a self-matching network for industrial microwave heating antennas 

    Mallorquí Franquet, Jordi Joan; Aguasca Solé, Alberto; Cardama Aznar, Ángel; Pages, R; Haro, J M (Institute of Electrical and Electronics Engineers (IEEE), 1999)
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    One of the main problems regarding the efficiency in a heating industrial system using high power microwaves is related with the uncontrolled changes on the load. These changes can be caused both by the different kinds of ...
  • A pulsed carrier recovery using a discrete conception of the PLL 

    Aguasca Solé, Alberto; Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1992)
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    A bistatic radar system requires accurate synchronization between the transmitter and the remote receiver in order to achieve a correct coherent target detection and positioning. An unlinked receiver carrier phase/frequency ...
  • ARBRES: Light-weight CW/FM SAR sensors for small UAVs 

    Aguasca Solé, Alberto; Acevo Herrera, René; Broquetas Ibars, Antoni; Mallorquí Franquet, Jordi Joan; Fabregas Canovas, Francisco Javier (2013-03-06)
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    This paper describes a pair of compact CW/FM airborne SAR systems for small UAV-based operation (wingspan of 3.5 m) for low-cost testing of innovative SAR concepts. Two different SAR instruments, using the C and X bands, ...
  • Assessment of 3-D printing technologies for millimeter-wave reflectors 

    Romeu Robert, Jordi; Blanch Boris, Sebastián; Vidal, Neus; Lopez-Villegas, Jose Maria; Aguasca Solé, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2018-07-20)
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    Three different 3D printing technologies: Stereolithography (SLA), Fused Deposition Modeling (FDM) and HP Multi Jet Fusion Technology (MJF) are compared to build a parabolic reflector operating at 100 GHz. Fabrication ...
  • Atmospheric phase screen compensation in ground-based sar with a multiple-regression model over mountainous regions 

    Iglesias González, Rubén; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; Mallorquí Franquet, Jordi Joan; López Martínez, Carlos; Gili Ripoll, José Antonio; Corominas Dulcet, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2014-05-01)
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    In this paper, a new model-based technique for the compensation of severe height-dependent atmospheric artifacts, using ground-based synthetic aperture radar (SAR) data over mountainous regions, is proposed. The method ...
  • Automatic self-matching network for industrial microwave heating based on the conjugate gradient algorithm 

    Mallorquí Franquet, Jordi Joan; Aguasca Solé, Alberto; Cardama Aznar, Ángel; Pagès Serra, Romà; Haro Sánchez, Jose (IEE-INST ELEC ENG, 1999-02-28)
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    An automatic matching network has been implemented using a waveguide magic T with two sliding short circuit stubs whch are adjusted by a microcontroller running a conjugate gradient algorithm. The inclusion of this device ...
  • Comparing satellite based and ground based radar interferometry and field observations at the Canillo landslide (Pyrenees) 

    Corominas Dulcet, Jordi; Iglesias González, Rubén; Aguasca Solé, Alberto; Mallorquí Franquet, Jordi Joan; Fabregas Canovas, Francisco Javier; Planas, Xavier; Gili Ripoll, José Antonio (Springer, 2014)
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    The landslide of El Forn de Canillo in the Principality of Andorra is one of the largest in the Pyrenees. In 2007 a monitoring system (boreholes equipped with inclinometers, extensometers and piezometers) was set up. Between ...
  • Correlation techniques applied to antenna pattern measurement 

    Leather, P. S. H.; Parsons, J. D.; Romeu Robert, Jordi; Blanch Boris, Sebastián; Aguasca Solé, Alberto (2004-05-31)
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    A correlation processor based on the excellent periodic autocorrelation properties of maximal-length pseudorandom binary sequences has been used in antenna pattern measurements to resolve the direct (wanted) path from ...
  • Deforming and relief interferometric SAR imaging at W-band 

    Abril, Jordi; Nova, Enrique; Broquetas Ibars, Antoni; Aguasca Solé, Alberto; Romeu Robert, Jordi; Jofre Roca, Lluís (IEEE, 2011)
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    Interferometry at W Band can be exploited to form images of small deformations with precisions in the order of tenths of microns and retrieve surface relieves. An Interferometric Synthetic Aperture Radar setup is proposed ...
  • Design and first results of an UAV-borne L-band radiometer for multiple monitoring purposes 

    Acevo Herrera, René; Aguasca Solé, Alberto; Bosch Lluís, Xavier; Camps Carmona, Adriano José; Martínez-Fernández, José; Sánchez-Martín, Nilda; Pérez-Gutiérrez, Carlos (2010-06-29)
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    UAV (unmanned Aerial Vehicle) platforms represent a challenging opportunity for the deployment of a number of remote sensors. These vehicles are a cost-effective option in front of manned aerial vehicles (planes and ...
  • Differential SAR interferometry with orbital, airborne and ground-based sensors 

    Monells Miralles, Daniel; Mallorquí Franquet, Jordi Joan; Aguasca Solé, Alberto; Broquetas Ibars, Antoni; Fabregas Canovas, Francisco Javier; López Martínez, Carlos; Alonso González, Alberto; Iglesias González, Rubén; Centolanza, Giuseppe (2011)
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    • Introduction to Differential Interferometry • Orbital Sensors: ERS, ENVISAT, RADARSAT2, TerraSAR-X. • Airborne Sensors: DLR’s E-SAR • Ground-Based Sensors: UPC’s GB-SAR • Conclusions