Exploració per tema "Radar"

Ara es mostren els items 55-74 de 322

    • Aplicación de imágenes de satélite SAR,en los estudios de contaminación marina y de dinámica de las aguas en el mediterráneo noroccidental 

      Platónov, Alexéi Konstantínovich (Universitat Politècnica de Catalunya, 2002-07-19)
      Tesi
      Accés obert
      This thesis presents diverse theoretical and practical applications of the ERS 1/2 and RADARSAT satellite images of the Synthetic Aperture Radar SAR sensor (near 330 images in the Northwest Mediterranean NWM and 980 in ...

    • Aplicación de los generadores de forma de onda arbitraria en la simulación de señales radar 

      Broquetas Ibars, Antoni; Aguasca Solé, Alberto; Elias Fusté, Antoni (1992)
      Text en actes de congrés
      Accés obert

    • Aplicación de sistemas PLL en la recuperación del sincronismo de portadora para un radar Biestatico coherente 

      Aguasca Solé, Alberto (1991)
      Text en actes de congrés
      Accés obert
      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 ...

    • Aplicación del análisis fractal al estudio de las estructuras dinámicas de fluidos medioambientales 

      Platónov, Alexéi Konstantínovich; Grau Barceló, Joan; Redondo Apraiz, José Manuel (Fundación para el Fomento de la Ingeniería del Agua, 2008-09)
      Article
      Accés obert
      La aparición de múltiples escalas, que interactúan entre si en diversos fenómenos físicos medioambientales, especialmente cuando el régimen fluido es turbulento, exige métodos de análisis nuevos. El análisis multi-fractal ...

    • Approach to velocity and acceleration measurement in the Bi-Directional SAR imaging mode 

      Mittermayer, Josef; Prats, Pau; Wollstadt, Steffen; Baumgartner, Stefan; López Dekker, Francisco J.; Broquetas Ibars, Antoni; Makhoul Varona, Eduardo; Krieger, Gerhard; Moreira, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents an initial analysis of the possibilities for velocity and acceleration m easurement with the Bi- Directional SAR imaging mode (BiDi). It comprises single satellite single path acquisitions as well ...

    • Arbitrary wave synthesis using spectral transformations 

      Ferrando Bataller, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 1993)
      Text en actes de congrés
      Accés obert
      The different transformations among plane, cylindrical and spherical spectrum allow to tackle the arbitrary field synthesis from a set of known sources. Putting all the spectrums in the same coordinate axis we can obtain ...

    • Architecting optimized spaceborne Earth observation missions 

      Llaveria Godoy, David; Araguz López, Carles; Camps Carmona, Adriano José; Alarcón Cot, Eduardo José (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Spaceborne constellations composed by several heterogeneous platforms are an actual solution to undertake Earth Observation missions. However, designing such missions present problems due to the heterogeneity and the ...

    • Array antena SIW 24 GHz para radar de automóviles 

      Rosselló Fabregat, Joaquim (Universitat Politècnica de Catalunya, 2015-05-21)
      Treball Final de Grau
      Accés obert
      In this project a flat antenna array on Substrate Integrated Waveguide technology (SIW) has been designed, simulated and built to be used in automotive radar at 24 GHz. The software used in the simulation, configuration ...

    • Ascending-descending orbit combination SAR interferometry assessment 

      Carrasco, D; Díaz, J; Broquetas Ibars, Antoni; Arbiol, Roman; CASTILLO, M; Palà, V (ESA Publications Division, 1997)
      Text en actes de congrés
      Accés obert
      Ascending-descending orbit combination for DEM generation is very promising technique which can be used to fill in ome gaps in the DEMs caused by the geometric deformations or SAR images. The benefits from the combination ...

    • Assesment of atmospheric phase screen impact on Geosynchronous SAR 

      Recchia, Andrea; Monti Guarnieri, Andrea; Broquetas Ibars, Antoni; Ruiz Rodon, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The paper evaluates the effects of Atmospheric Phase Screen on focused Geosynchronous SAR data. We derive theoretical models for the resolution, the interferometric de-correlation and the induced clutter in presence of an ...

    • Assessment of L-Band SAR polarimetry for soil and crop monitoring 

      Barber, Matías; López Martínez, Carlos; Grings, Francisco (VDE-Verlag, 2016)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Near-future L-band fully polarimetric Synthetic Aperture Radar (SAR) missions will provide meaningful and timely information over agricultural lands. In this paper, we evaluate the potential of L-band SAR polarimetry for ...

    • Atmospheric artifacts correction with a covariance-weighted linear model over mountainous regions 

      Hu, Zhongbo; Mallorquí Franquet, Jordi Joan; Fan, Hongdong (Institute of Electrical and Electronics Engineers (IEEE), 2018-12-01)
      Article
      Accés obert
      Mitigating the atmospheric phase delay is one of the largest challenges faced by the differential synthetic aperture radar (SAR) interferometry community. Recently, many publications have studied correcting the stratified ...

    • Atmospheric phase screen retrieval from GEOSAR long term acquisition 

      Ruiz Rodon, Josep; Broquetas Ibars, Antoni; Monti Guarnieri, Andrea; Rocca, Fabio (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, a GEOSAR mission with typical LEOSAR parameters but longer integration time to increase the received power is presented. Such systems can provide images of large areas with continuous monitoring. The revisit ...

    • Atmospheric Remote Sensing and Adaptive Processing: Boundary-Layer radar observation in the context of U.S. VORTEX project 

      Villalonga Llauger, Joan (Universitat Politècnica de Catalunya, 2020-06-29)
      Treball Final de Grau
      Accés restringit per decisió de l'autor

    • Automotive radar and radome calibration to improve the direction of arrival detection performance 

      Buitrago Ventura, Santiago; Blanch Boris, Sebastián; Romeu Robert, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      An assessment of the improvement in the Direction of Arrival (DoA) measurements in automotive radar sensor by joint calibration of the radar sensor plus the radome is presented. Nowadays, radar sensors are calibrated before ...

    • Automotive radar sensor characteritzation at 77GHz band. 

      Esbrí Vidal, José Manuel (Universitat Politècnica de Catalunya, 2023-05-26)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat
      Automotive radars are used to determine the distance and speed of objects that are close to the vehicle. In this project an automotive radar has been characterized in order to prepare a suitable set-up to measure radomes ...

    • Beam alignment for vehicle-to-infrastructure communications using IEEE 802.11ad radar 

      Reus Muns, Guillem (Universitat Politècnica de Catalunya, 2017-10-19)
      Treball Final de Grau
      Accés obert
      This work suggests a MAC modification of the 802.11ad standard in order to accommodate a radar application that reuses the stanrdard, for communications V2I (Vehicle-to-Infrasatructure). This radar will be used a substitute ...

    • Benchmarking vector accelerators with an automotive application 

      Petrovic, Matej (Universitat Politècnica de Catalunya, 2023-06-29)
      Projecte Final de Màster Oficial
      Accés obert
      This project focuses on the development and optimization of an automotive radar application.The project aims to generate a functional version of the application in collaboration with Infineon Germany. The implementation ...

    • Calibració i ajustament d'un cloud-radar a banda W 

      Colomé Cirera, Xavier (Universitat Politècnica de Catalunya, 2016-06)
      Treball Final de Grau
      Accés obert
      This project is focused on the characterization, calibration and the improvement of the radar that works at 94 GHz. The aim of this project is that the radar detects clouds and then analyzes the data. The first part of the ...

    • Calibración polarimetrica de un campo compacto de medida RCS 

      Broquetas Ibars, Antoni; Jofre Roca, Lluís (1991)
      Text en actes de congrés
      Accés obert
      A polarimetric calibrarion procedure for a compact range RCS measurement system is presented. This merhod is based on a marhematical model which includes al! possible errors. Some RCS measurements and ISAR images are included.