Ara es mostren els items 59-78 de 321

    • 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.
    • Calibration of Raman lidar water vapor mixing ratio measurements using zenithal measurements of diffuse sunlight and a radiative transfer model 

      Muñoz Porcar, Constantino; Comerón Tejero, Adolfo; Sicard, Michaël; Barragán Cuesta, Rubén; García Vizcaíno, David; Rodríguez Gómez, Alejandro Antonio; Rocadenbosch Burillo, Francisco; Granados Muñoz, María José (Institute of Electrical and Electronics Engineers (IEEE), 2018-07-20)
      Article
      Accés obert
      Among the different techniques available for measuring the atmospheric water vapor content, Raman lidars stand out as accurate instruments providing detailed profiles with high temporal and altitude resolution. Their ...
    • Car radome measurement system 

      Rovayo Sierra, Juan Pablo (Universitat Politècnica de Catalunya, 2019-07)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat
      Radars have been a key technology for enabling autonomous driving, collision avoidance and pedestrian detection are some of the uses that this technology has. Radomes play an important role for this, therefore, their correct ...
    • Caracterització del sistema i de la generació precisa de senyal FM en radars de curt abast treballant a 120 GHz per aplicacions biomèdiques 

      Bosch Balagué, Andreu (Universitat Politècnica de Catalunya, 2018-06)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat
      Aquest projecte consisteix en revisar, caracteritzar i redissenyar si és necessari les diferents parts que componen un prototip biomèdic basat en la tecnologia radar. Mitjançant aquesta tecnologia capaç de detectar moviments ...
    • Caracterización de la circulación superficial del mar en las proximidades del Delta del Ebro 

      Segura Morera, Oriol (Universitat Politècnica de Catalunya, 2018-09-28)
      Treball Final de Grau
      Accés obert
      La variabilidad de la circulación en el mediterráneo está determinada por el efecto de los procesos locales y remotos generados por el viento, así como de la configuración de la batimetría y la línea de orilla. En este ...
    • Caracterización de la densidad de los cultivos en tiempo real con técnicas de radar de microondas 

      Giménez Colom, Pol (Universitat Politècnica de Catalunya, 2023-05-25)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat