Exploració per tema "Radar"

Ara es mostren els items 175-194 de 322

    • GEMINI: geosynchronous SAR for Earth monitoring by interferometry and imaging 

      Monti Guarnieri, Andrea; Tebaldini, Stefano; Rocca, Fabio; Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper we discuss a preliminary design for a constellation of geosynchronous (GEO) Synthetic Aperture Radars (SAR). The key design concept is to employ one or more pairs of closely-spaced twin receivers flown ...

    • Generació eficient d'interferogrames diferencials mitjantçant un DEM extrem 

      Monells Miralles, Daniel (Universitat Politècnica de Catalunya, 2008-12-15)
      Projecte/Treball Final de Carrera
      Accés obert
      Aquest projecte està emmarcat en el camp de la interferometria, una aplicació que permet tenir informació al llarg de l’eix d’observació d’una escena. La informació d’alçada s’extreu a partir del que s’anomena interferograma, ...

    • Generación de clutter radar coherente y correlado con estadística tipo K o de Hankel 

      Elias Fusté, Antoni (1989)
      Text en actes de congrés
      Accés obert
      This paper presents an exogenous model to generate K-distributed, coherent and correlated clutter. This model has been tested for exponencial and gaussian autocorrelation functions, showing good fits for autocorrelation ...

    • GeoSAR Mission: Orbit Determination Techniques for a Ground-based Interferometer System 

      Fernàndez Uson, Marc (Universitat Politècnica de Catalunya, 2018-03)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      The aim of Geostationary Synthetic Aperture Radar (GeoSAR) missions is to obtain daily images of events that take place over the Earth's surface. Some of them are critical to monitor (e.g. land stability control, natural ...

    • Geostationary radar orbit determination from radar interferometry 

      Aparicio Aramayo, Oscar Felipe (Universitat Politècnica de Catalunya, 2016-06)
      Treball Final de Grau
      Accés obert
      Geostationary Synthetic Aperture Radars require a precise orbit modelling to obtain high resolutions images of the Earth. Applying interferometric techniques to single received signal from pairs of ground stations it is ...

    • Global L-band vegetation volume fraction estimates for modeling vegetation optical depth 

      Chaparro Danon, David; Jagdhuber, Thomas; Piles Guillem, María; Entekhabi, Dara; Jonard, François; Fluhrer, Anke; Feldman, Andrew F.; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The attenuation of microwave emissions through the canopy is quantified by the vegetation optical depth (VOD), which is related to the amount of water, the biomass and the structure of vegetation. To provide microwave-derived ...

    • GNSS-R derived centimetric sea topography: an airborne experiment demonstration 

      Carreño Luengo, Hugo; Hyuk, Park; Camps Carmona, Adriano José; Fabra Cervellera, Fran; Rius Jordán, Antonio (2013-06)
      Article
      Accés restringit per política de l'editorial
      The results of two airborne experiments performed to test the precision and the relative accuracy of the conventional Global Navigation Satellite Systems Reflectometry (GNSS-R) technique employing only the C/A code are ...

    • GRECO Code Rejuvenated: hybrid CPU-graphical processing 

      Rius Casals, Juan Manuel; Carbo, Alex; Úbeda Farré, Eduard; Heldring, Alexander (IEEE, 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      GRECO code has been updated by replacing the graphical processing technique for computation of Physical Optics surface integral by a hybrid CPU-graphical processing approach. The resulting code needs more CPU power for ...

    • Ground moving target indication using multi-channel SAR with non-uniform displaced phase centers 

      Makhoul Varona, Eduardo; Broquetas Ibars, Antoni; Ruiz Rodon, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents an evaluation of a post-Doppler spacetime adaptive Processing (STAP) technique for non-uniformly displaced phase center receivers synthetic aperture radar (SAR). Both theoretical and simulation ...

    • Herramienta de calculo de la potencia de clutter producida por perfiles topograficos reales 

      Elias Fusté, Antoni; Broquetas Ibars, Antoni (1991)
      Text en actes de congrés
      Accés obert
      The surface clutter becames a interference in a radar system that makes it warse. So, ir was built a personal computer tool that obtains the surface clutter power. This tool takes imo consideration the orographic and ...

    • High accuracy synthetic aperture radar (SAR) processor for UAV platforms 

      Rodriguez Torrecillas, Ricard (Universitat Politècnica de Catalunya, 2018-10-18)
      Treball Final de Grau
      Accés obert
      The combination of frequency-modulated continuous-wave (FMCW) technology and synthetic aperture radar (SAR) techniques leads to lightweight cost-effective imagining sensor of high resolution. One limiting factor to use of ...

    • High frequency radar cross section of complex objects in real time 

      Rius Casals, Juan Manuel; Vall-Llossera Ferran, Mercedes Magdalena (Institute of Electrical and Electronics Engineers (IEEE), 1991)
      Text en actes de congrés
      Accés obert
      It is shown that real-time RCS (radar cross section) computation is possible with a high-performance graphics workstation. Physical optics (PO) and physical theory of diffraction (PTD) approximation are computed using the ...

    • High resolution GPR 3D images optimization 

      Vera González, Arnaldo (Universitat Politècnica de Catalunya, 2017-05)
      Treball Final de Grau
      Accés obert
      The present final bachelor’s degree project is an experimental-based work, where we seek the optimization on the creation and representation of three dimensional images using ground penetrating radar (GPR) technology. This ...

    • Identificación selectiva de centros de dispersion radar utilizando tecnicas ISAR 

      Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni; Jofre Roca, Lluís (1991)
      Text en actes de congrés
      Accés obert
      This paper presents an ISAR technique which is able to identify the scattering mechanisms in the target structure wich are responsible of each significant lo be of the RCS vs. angle diagram. The technique is based on a ...

    • Image and radar fusion for autonomous driving 

      De Gibert Duart, Francesc Xavier (Universitat Politècnica de Catalunya, 2023-10-06)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat

    • Image formation for synthetic aperture radar using MATLAB 

      Cequiel Mir, Mireia (Universitat Politècnica de Catalunya, 2008-02-27)
      Projecte/Treball Final de Carrera
      Accés obert
      The study of SAR (Synthetic Aperture Radar) image formation using MATLAB it is explained in the following project. The main to use MATLAB in this project was the most important thing to choose it. As MATLAB it is one of ...

    • Impact analysis of wind turbines blockage on doppler weather radar 

      Belmonte Molina, Aniceto; Fabregas Canovas, Francisco Javier (2010)
      Text en actes de congrés
      Accés obert

    • Impact of clutter decorrelation on Geosynchronous SAR 

      Recchia, Andrea; Monti Guarnieri, Andrea; Broquetas Ibars, Antoni; Ruiz Rodon, Josep (VDE Conference Publications, 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      We discuss the effects of the clutter on a Geosynchronous SAR system exploiting long integration times (from minutes to hours) to counteract for spread losses and increase azimuth resolution. Only stable targets will be ...

    • Implementació del precondicionador SAI com a eina acceleradora en el càlcul de la Secció Recta Radar de blancs conductors 

      Cresswell Baldellou, Adam Andreu (Universitat Politècnica de Catalunya, 2009-07-17)
      Treball Final de Grau
      Accés obert

    • Implementation of pc control of an adapted boat radar as an eye-safety accessory for an aerosol lidar system 

      Solana, Eduard (Universitat Politècnica de Catalunya, 2018-07)
      Treball Final de Grau
      Accés obert
      This project is about an implementation of a remote pc control, developed on the labview environment, for a naval comertial Radar in witch we had no knowledge of it's intern behaviour.