Exploració per tema "Radar"

Ara es mostren els items 180-199 de 322

    • 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)
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      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)
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      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.

    • Importance sampling en simulaciones por computador de procesadores de señal radar 

      Elias Fusté, Antoni (1989)
      Text en actes de congrés
      Accés obert
      The application of importance-sampling technique can make possible to estímate very low false alarm rate in a radar simulator . The use of this technique to modify the probability density func t ion of the noise in a way ...

    • In-cabin MIMO radar system for human dysfunctional breathing detection 

      López Montero, María José; Palacios Arias, César Augusto; Romeu Robert, Jordi; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2022-12-15)
      Article
      Accés obert
      The integration of wireless sensors into the automotive industry is making vehicles increasingly safe and autonomous. At present, vehicles are equipped with external sensors that facilitate maneuverability and braking and ...

    • Insar atmospheric delays compensation: case study in Tenerife island 

      Hu, Zhongbo; Mallorquí Franquet, Jordi Joan; Centolanza, Giuseppe; Duro, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Differential Interferometry SAR (DInSAR) is an advanced technique to retrieve ground deformation in the geoscience community. Atmospheric Phase Screen (APS) is one of the largest challenges limiting the application of ...

    • Integrated near-surface geophysical survey of the Cathedral of Mallorca 

      Pérez Gracia, María de la Vega; Caselles Magallón, Josep Oriol; Clapés Boixader, Jaime; Osorio Gómez, Raúl; Martínez, G.; Canas Torres, José Antonio (Elsevier, 2009-07-01)
      Article
      Accés restringit per política de l'editorial
      This paper describes an integrated near-surface geophysical study carried out in order to obtain high-resolution images of the shallow subsurface under and around the Cathedral of Mallorca. The study was a part of a global ...

    • Interferometric error model for precise orbit determination of geostationary satellites 

      Aldana Alonso, Rubén (Universitat Politècnica de Catalunya, 2021-09-13)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat