Exploració per tema "Radar"

Ara es mostren els items 207-226 de 322

    • Joint wall mitigation and compressive sensing for indoor image reconstruction 

      Lagunas Targarona, Eva; Amin, Moeness; Ahmad, Fauzia; Nájar Martón, Montserrat (IEEE Press. Institute of Electrical and Electronics Engineers, 2012)
      Article
      Accés restringit per política de l'editorial
      Compressive sensing (CS) for urban operations and through-the-wall radar imaging has been shown to be successful in fast data acquisition and moving target localizations. The research in this area thus far has assumed ...

    • k-NN algorithm appled todata association and data fusion in multi-sensor multi-target OFDM radar scenarios 

      Rufas Talamas, Elisabet (Universitat Politècnica de Catalunya, 2020-06)
      Treball Final de Grau
      Accés obert
      In the recent years, numerous Machine Learning investigations have been centered around the topic of point-target positioning and tracking, which rises the interest for algorithms such as k-NN to be implemented for said ...

    • Ku Band GB-SAR system integration and validation 

      Palomas Riera, Clàudia (Universitat Politècnica de Catalunya, 2015-07-21)
      Treball Final de Grau
      Accés obert
      This paper contains full detailed the process of calibration of the radar system with its measurements

    • Laboratory characterization of a GPR antenna for high-resolution testing: radiation pattern and vertical resolution 

      Pérez Gracia, María de la Vega; Capua, Daniel di; González Drigo, José Ramón; Pujades Beneit, Lluís (2009-06)
      Article
      Accés restringit per política de l'editorial
      High-resolution ground-penetrating radar (GPR) evaluations of structures are usually carried out using antennas with high nominal centre frequencies (between 1 and 2GHz). A comprehensive characterization of such an antenna ...

    • Laboratory experiments of polarimetric radar interferometry: DEM generation and vegetation height estimation 

      Fortuny Guasch, Joaquim; Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
      Accés obert
      A coherence optimization method, which makes use of polarimetry to enhance the quality of the interferograms, has been experimentally tested under laboratory conditions in an anechoic chamber. The experiments have proved ...

    • Landslide monitoring with spotlight TerraSAR-X DATA 

      Iglesias González, Rubén; Monells Miralles, Daniel; Centolanza, Giuseppe (IEEE, 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper aims to demonstrate that radar-based remote sensing techniques can be as effective as the conventional geotechnical ones for the detection and monitoring of well suited areas. Many of the high mountain ...

    • Landslide monitoring with staring-spotlight data: Canillo case study 

      Mallorquí Franquet, Jordi Joan; Hu, Zhongbo; Corominas Dulcet, Jordi; Gili Ripoll, José Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      One of the main applications of SAR interferometry is the monitoring of hazard risks related with urban subsidence and landslide instabilities. The different sensors available offer different carrier frequencies, image ...

    • Linear and nonlinear terrain deformation maps from a reduced set of interferometric SAR images 

      Mora Sacristan, Óscar; Mallorquí Franquet, Jordi Joan; Broquetas Ibars, Antoni (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2003-10-31)
      Article
      Accés obert
      In this paper, an advanced technique for the generation of deformation maps using synthetic aperture radar (SAR) data is presented. The algorithm estimates the linear and nonlinear components of the displacement, the error ...

    • LMA observations of upward lightning flashes at the Säntis Tower initiated by nearby lightning activity 

      Sunjerga, A.; Rubinstein, M.; Pineda, Nicolau; Mostajabi, A.; Azadifar, M.; Romero Durán, David; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Figueras i Ventura, Jordi; Besic, Nikola; Grazioli, Jacopo; Hering, Alessandro; Germann, Urs; Diendorfer, Gerhard; Rachidi-Haeri, Farhad (2020-04)
      Article
      Accés obert
      We present in this paper lightning current measurements, LMA (Lightning Mapping Array) data and fast antenna electric fields associated with upward flashes observed at the Säntis Tower during summer of 2017. The LMA network ...

    • LTCC-based dielectric flat lens performance evaluation at 94 GHz 

      Imbert Villà, Marc; Blanch Boris, Sebastián; Romeu Robert, Jordi; Jofre Roca, Lluís; Baquero Escudero, M. (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The design and performance evaluation of an inhomogeneous LTCC-based dielectric flat lens at 94 GHz is presented. A previously introduced dielectric flat lens design with its effective permittivity (r) circularly distributed ...

    • Material measurement system for radomes 

      Fernández Rull, Josep Ramon (Universitat Politècnica de Catalunya, 2020-06)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat

    • Medida de sección recta radar con onda esférica en campo próximo 

      Broquetas Ibars, Antoni; Jofre Roca, Lluís; Cardama Aznar, Ángel (1992)
      Text en actes de congrés
      Accés obert
      The paper presents a new Inverse Synthetic Aperture Radar (ISAR) algorithm intended for Radar Cross Section (RCS) measurement from scattering fields. The method is based on a spherical wave near-field illumination of the ...

    • Micro rain radar for meteorological applications 

      Bikerskyy, Vadym (Universitat Politècnica de Catalunya, 2018-05)
      Treball Final de Grau
      Accés obert
      The main objective of this work is the development of a static reflectivity Doppler radar system from an existing system, introducing the necessary changes to achieve the desired application. The instrument that is proposed ...

    • Micrometric deformation imaging at W-Band with GBSAR 

      Martínez, Arturo; Aguasca Solé, Alberto; Lort Cuenca, Marc; Broquetas Ibars, Antoni (2017-02-17)
      Article
      Accés obert
      The paper presents the experimental evaluation of 94 GHz CW-FM Radar that can be configured as a Ground Based SAR (Synthetic Aperture Radar) for high resolution imaging and deformation control. This system has been designed ...

    • MIMO radar antenna with sectorial human torso illumination for an in-cabin breathing detection system 

      López Montero, María José; Palacios Arias, César Augusto; Romeu Robert, Jordi; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Text en actes de congrés
      Accés obert
      The vital sign measurement systems inside vehicles have taken great or impulse in recent years, and the technologies that have been most welcomed are based on wireless measurements that do not interrupt driving and are ...

    • MIMO Radar experiments and simulation for ADAS 

      Torres Benito, Sergio (Universitat Politècnica de Catalunya, 2023-07-10)
      Treball Final de Grau
      Accés obert
      In this thesis we aim to analyze the physical principles, design considerations, and performance characteristics of FMCW radar. We will delve into the signal processing algorithms employed for range and velocity estimation ...

    • Model type II regression for lagrangian validation of HF radar velocities in the NW Iberian Peninsula 

      Martínez Fernández, Adrián; Redondo Caride, Waldo; Alonso Pérez, Fernando; Piedracoba Varela, Silvia; Lorente, Pablo; Allen-Perkins Cáceres, Silvia; Montero Vilar, Pedro; Ayensa Aguirre, Garbiñe; Torres López, Silvia; Fernández Baladrón, Adrián; Varela Benvenuto, Ramiro Alberto; Velo Lanchas, Antón; Gil Coto, Miguel (SARTI, 2023)
      Article
      Accés obert
      Two designs of lagrangian low-cost drifting buoys have been developed in order to monitor the ocean surface dynamics in the North-west Iberian Peninsula and provide ground-truth observations that can be used to assess the ...

    • Modeling fast boat motion impact on satellite SAR MTI systems 

      Ceba Vega, Francisco; Makhoul Varona, Eduardo; Broquetas Ibars, Antoni; Zhan, Yu; Beaton, Alasdhair (2015-10-01)
      Article
      Accés obert
      This letter analyzes the problems of imaging small and fast boats with synthetic aperture radar (SAR), which may experience severe defocusing and/or smearing. This situation is encountered, inter alia, in ocean traffic ...

    • Multidisciplinary analysis of the torrential processes affecting the basin of Portainé (Eastern Pyrenees) 

      Palau Berastegui, Rosa Maria (Universitat Politècnica de Catalunya, 2017-06-04)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Debris flows and other torrential processes represent a significant geomorphological hazard in mountainous regions. This research focuses on the triggering mechanisms and flow dynamic. The multidisciplinary approach ...

    • Multiscale soil moisture retrievals from microwave remote sensing observations 

      Piles Guillem, Maria (Universitat Politècnica de Catalunya, 2010-07-16)
      Tesi
      Accés obert
      La humedad del suelo es la variable que regula los intercambios de agua, energía, y carbono entre la tierra y la atmósfera. Mediciones precisas de humedad son necesarias para una gestión sostenible de los recursos hídricos, ...