Exploració per tema "Radar"

Ara es mostren els items 18-37 de 322

    • A suboptimum rank test for radar detection 

      Sanz González, José Luis; Figueiras Vidal, Aníbal R.; Mariño Acebal, José Bernardo (Universitat Politècnica de Catalunya (UPC), 1983)
      Text en actes de congrés
      Accés obert
      In this communication, a new nonparametric rank scheme is in traduced for Radar application and its performance briefly analyzed. The proposed scheme has a suboptimum character, since it is introduce as a simplification ...

    • A temporal phase coherence estimation algorithm 

      Zhao, Feng; Mallorquí Franquet, Jordi Joan (VDE Conference Publications, 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Pixel selection is a critical procedure in DInSAR processing. In this paper a new temporal phase coherence (TPC) estimation algorithm is proposed for the pixel selection. TPC is calculated based on the estimated interferometric ...

    • A two-dimensional doppler-radiometer for earth observation 

      Camps Carmona, Adriano José; Swift, Calvin T. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-07-31)
      Article
      Accés obert
      Compared to synthetic aperture radars (SARs), the angular resolution of microwave radiometers is quite poor. Traditionally, it has been limited by the physical size of the antenna. However, the angular resolution can be ...

    • A4CAT. A plataform for weather-related risk events management 

      Boota, Adnan (Universitat Politècnica de Catalunya, 2020-06)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   HYDS (Hydrometeorological Innovate Solutions)
      In the framework of the EU funded research project under the H2020 framework programme ANYWHERE (Enhancing emergency management and response to extreme weather and climate events) a system to integrate both hazard and ...

    • Accuracy assessment of SAR interferometry using the ERS-1 

      Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1995)
      Text en actes de congrés
      Accés obert
      A SAR raw data simulator and a SAR processor are used as a tool for performance assessment of SAR interferometry algorithms like the multi-baseline and multifrequency. Traditional algorithms have also been tested with real ...

    • Accurate numerical modeling of the TARA reflector system 

      Heldring, Alexander; Rius Casals, Juan Manuel; Ligthart, Leo P.; Cardama Aznar, Ángel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2004-07-31)
      Article
      Accés obert
      The radiation pattern of the large parabolic reflectors of the Transportable Atmospheric RAdar system (TARA), developed at Delft University of Technology, has been accurately simulated. The electric field integral ...

    • Accurate, grid-robust and versatile combined-field discretization for the electromagnetic scattering analysis of perfectly conducting targets 

      Úbeda Farré, Eduard; Sekulic, Ivan; Rius Casals, Juan Manuel; Heldring, Alexander (2020-04-15)
      Article
      Accés obert
      Recent implementations of the Electric-Field Integral Equation (EFIE) for the electromagnetic scattering analysis of perfectly conducting targets rely on the electric current expansion with the monopolar-RWG basis functions, ...

    • Active signal repeater for interferometric precise orbit determination 

      Garcia Monterrubio, Berta (Universitat Politècnica de Catalunya, 2021-07-27)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat

    • ADS-B radar system for data gathering and real time air traffic monitoring 

      Algar Creus, Eduard (Universitat Politècnica de Catalunya, 2023-06-07)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat
      This thesis will aim to design and implement an ADS-B integral and distributed system for detecting aircrafts broadcasts messages. Those messages will be processed and stored in a SQL database the project will rely on an ...

    • Advanced radar geosynchronous observation system: ARGOS 

      Monti Guarnieri, Andrea; Broquetas Ibars, Antoni; Recchia, Andrea; Rocca, Fabio; Ruiz Rodon, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2015-07-01)
      Article
      Accés obert
      The Advanced Radar Geosynchronous Observation System is proposed to be a multiple-input–multiple-output synthetic aperture radar (SAR) system hosted on a swarm of minisatellites in quasi-geostationary orbits. The system ...

    • Algoritmo interferométrico para un sistema radar de apertura sintética circular de corto alcance 

      Sagués Piella, Lluís; Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni (1997)
      Text en actes de congrés
      Accés obert
      This paper presents an interferometric algorithm capable of working with SAR images obtained from measurements carried out with antennas that describe a circular trajectory. The antennas are positioned on a vertical mast ...

    • Alternative processing for micro rain radar (MRR) observations 

      Garcia Benadí, Albert; Bech, Joan; González Herrero, Sergi; Río Fernandez, Joaquín del (2018)
      Comunicació de congrés
      Accés obert
      The most common function of weather radars is to provide a description of the precipitation field, typically in four dimensions: temporal evolution of a 3D field, including characteristics of precipitation and rainfall ...

    • An adaptive multilooking scheme for multi-temporal insar data 

      Zhao, Feng; Mallorquí Franquet, Jordi Joan (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Multilooking is an effective speckle reduction tool for InSAR images. However, it has some limitations. Based on the De-specKS and NL-SAR algorithms, an adaptive multilooking scheme for multi-temporal InSAR data has been ...

    • An improvement of offset tracking for cross hair (CH) and patch like (PL) elimination and reliability estimation for large deformation monitoring with SAR data 

      Du, Sen; Mallorquí Franquet, Jordi Joan (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés obert
      SAR based offset tracking (OT) is an efficient tool for ground deformation observation, and signal to noise ratio (SNR) is its common error indicator. However, ground feature variations often weaken the accuracy of OT. In ...

    • Analisis y caracterización de un detector radar en entornos interferentes con estadistica Weibull coherente 

      Fernández de Muniain Comajuncosa, Javier; Elias Fusté, Antoni (1991)
      Text en actes de congrés
      Accés obert
      The paper deals wilh the problem of radar delection of a target echo embedded in Weibull cluner and while gaussian noise. To derive a suitable processing scheme, the paper resons lo the general theory of radar delection ...

    • Analysis and design of an interferometer for geostationary synthetic aperture radars orbit determination 

      Grimaldo Sánchez, Germán Angel (Universitat Politècnica de Catalunya, 2015-07)
      Projecte/Treball Final de Carrera
      Accés obert
      The industry of remote sensing has nowadays strongly developed systems, which are versatile and adaptable, however they are not optimal for certain applications. With more than enough reason from it, a new technology of ...

    • Analysis and reduction of the distortions induced by time-domain filtering techniques in network analyzers 

      Porrata-Dòria i Yagüe, Ramir de; Broquetas Ibars, Antoni; Martínez, Luís Fernando (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-08-31)
      Article
      Accés obert
      The removal of isolation errors plays an essential role in the calibration process of radar scattering measurements. One of the most common techniques used for that purpose is time-domain filtering, also known as gating. ...

    • Analysis of denoising algorithms for Polarimetric SAR data: the cases of the Bilateral and the Non Local Means filters 

      Martinez Del Hoyo Guri, Antonio (Universitat Politècnica de Catalunya, 2014-09-12)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   Technische Universität Berlin
      [ANGLÈS] The aim of this thesis is to do an in-depth analysis of state-of-the-art denoising methods for Polarimetric SAR data and to propose a new algorithm taking advantage on their strong points. The filters under analysis ...

    • Analysis of energetic radiation associated with thunderstorms in the Ebro delta region in Spain 

      Fabró Tàpia, Ferran; Montañá Puig, Juan; Pineda Rüegg, Nicolau; Argemí Ribera, Oriol; Van der Velde, Oscar Arnoud; Romero Durán, David; Soula, Serge (2016-08-25)
      Article
      Accés obert
      The analysis of high-energy background radiation (0.1 – 2 MeV) enhancements during eight winter thunderstorms and ¿ve summer storms in the Ebro delta region in the northeast of Spain is presented. For the ¿rst time, ...

    • Analysis of several configurations that affect the Quantitative Precipitation Estimation by radar and rain gauge blending 

      Moreno González, Ana (Universitat Politècnica de Catalunya, 2018-08-24)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor