Exploració per tema "Radar"

Ara es mostren els items 217-236 de 322

    • 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, ...

    • New microwave-based missions applications for rainfed crops characterization 

      Sánchez, Nilda; López Sánchez, Juan Manuel; Arias Pérez, B.; Valcarce Diñeiro, R.; Martinez Fernandez, Jose; Calvo Heras, J. M.; Camps Carmona, Adriano José; González Zamora, Ángel; Vicente Guijalba, F. (International Society for Photogrammetry and Remote Sensing (ISPRS), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A multi-temporal/multi-sensor field experiment was conducted within the Soil Moisture Measurement Stations Network of the University of Salamanca (REMEDHUS) in Spain, in order to retrieve useful information from satellite ...

    • Non-parametric serial decision fusion 

      Elias Fusté, Antoni; Broquetas Ibars, Antoni; Castro Fouz, R. (1990)
      Text en actes de congrés
      Accés obert

    • Novel biomedical applications of millimeter wave high resolution radars 

      Martorell Jorba, Xavier (Universitat Politècnica de Catalunya, 2019-01)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      This project consists in designing the work parameters of a new radar system for the ocular detection and in improving a cardio-respiratory radar detection system by implementing a new acquisition subsystem based on a ...

    • Object detection with radar : present and future automotive technology 

      Díaz Martínez, Daniel (Universitat Politècnica de Catalunya, 2022-07-20)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Hochschule für Technik und Wirtschaft Dresden
      Radar-based object detection in cars is an integral part of autonomous driving systems. Radar sensors benefit from their excellent robustness in adverse weather conditions such as snow, fog or heavy rain. Although machine ...

    • Obtención de imágenes ISAR de blancos móviles 

      Puente Baliarda, Carles; Broquetas Ibars, Antoni; Jofre Roca, Lluís (1992)
      Text en actes de congrés
      Accés obert
      A new method for motion compensation has been developed for radar imaging of moving targets (ISAR). Phase shifts (due to target motion) among adjacent pulses from a STEPPED FREQUENCY signal, are removed with a parabolic ...

    • Obtención de mapas de detección en escenarios marítimos mediante simulación paramétrica en sistemas SAR-MTI 

      Bertomeu Rojas, Xavier (Universitat Politècnica de Catalunya, 2014-04-28)
      Projecte/Treball Final de Carrera
      Accés obert
      [ANGLÈS] This project is a small part of a larger project called SIMTISYS. The purpose of SIMTISYS is to simulate the behavior of a synthetic aperture radar with moving target indication (MTI) capabilities in maritime ...

    • On the amount of information content in microwave radiometry for wet delay correction 

      Gual de Torrellas, José María; Camps Carmona, Adriano José (Aalto University, 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The scope of this work is the determination of the set of optimum frequencies to be used in the companion microwave radiometers in future synthetic aperture radar altimeters, to provide higher spatial resolution of the ...

    • On the use of the l(2)-norm for texture analysis of polarimetric SAR data 

      Deng, xinping; López Martínez, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2016-11-01)
      Article
      Accés obert
      In this paper, the use of the l2-norm, or Span, of the scattering vectors is suggested for texture analysis of polarimetric synthetic aperture radar (SAR) data, with the benefits that we need neither an analysis of the ...

    • On-board phase and modulus calibration of large aperture synthesis radiometers: study applied to miras. 

      Torres Torres, Francisco; Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Corbella Sanahuja, Ignasi; Ferrero Pintor, Roberto (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1996-07-01)
      Article
      Accés obert
      On-board calibration of bidimensional aperture synthesis radiometers with a large number of antennas by the standard correlated noise injection method is technologically very critical because of the stringent requirements ...

    • Optical Doppler shift with structured light 

      Belmonte Molina, Aniceto; Pérez Torres, Juan (2011-11-15)
      Article
      Accés obert
      When a light beam with a transverse spatially varying phase is considered for optical remote sensing, in addition to the usual longitudinal Doppler frequency shift of the returned signal induced by the motion of the scatter ...