Now showing items 21-40 of 124

  • Atmosphere characterisation with SAR interferometry 

    Moyano Sánchez, Gorka (Universitat Politècnica de Catalunya, 2009-07)
    Master thesis
    Open Access
    The contribution of the atmosphere in SAR interferometry is not completely known. Therefore, the goal of the project is to characterise the atmosphere, i.e., to study the way it relates to interferograms. The analysis ...
  • Automatic refocus and feature extraction of single-look complex SAR signatures of vessels 

    Yam Ontiveros, Luis Eduardo; Mallorquí Franquet, Jordi Joan (2016)
    Article
    Open Access
    In recent years, spaceborne synthetic aperture radar ( SAR) technology has been considered as a complement to cooperative vessel surveillance systems thanks to its imaging capabilities. In this paper, a processing chain ...
  • Automatic vessel monitoring with single and multidimensional SAR images in the wavelet domain 

    Tello Alonso, Mª Victoria; López Martínez, Carlos; Mallorquí Franquet, Jordi Joan (ELSEVIER SCIENCE BV, 2006-12-31)
    Article
    Open Access
    Spaceborne Synthetic Aperture Radar (SAR) techniques constitute an extremely promising alternative compared to traditional surveillance methods thanks to the all-weather and day-and-night capabilities of Radar linked with ...
  • Bilateral distance based filtering for polarimetric SAR data 

    Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean; Deng, Xinping (2013-10-30)
    Article
    Open Access
    This paper introduces a non-linear Polarimetric SAR data filtering approach able to preserve the edges and small details of the data. It is based on exploiting the data locality in both, the spatial and the polarimetric ...
  • Bistatic SAR data acquisition and processing using SABRINA-X, with TerraSAR-X as the opportunity transmitter 

    Siddique, Muhammad Adnan (Universitat Politècnica de Catalunya, 2010-07)
    Master thesis
    Open Access
    This thesis investigates the acquisition and processing of Bistatic SAR data using SABRINA-X, and with TerraSAR-X as the transmitter of opportunity. SABRINA-X is an X-band receiver system that has been recently designed ...
  • Bistatic SAR tomography: processing and experimental results 

    Duque Biarge, Sergio; López Dekker, Francisco J.; Merlano Duncan, Juan Carlos; Mallorquí Franquet, Jordi Joan (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Conference report
    Open Access
    This paper presents across-track tomography applied to a bistatic geometry with fixed receivers. This kind of geometry can overcome some of the classical monostatic tomography limitations such as temporal decorrelation and ...
  • Bistatic synthetitc aperture radar imaging based on Geostationatry transmitters and Ground-Based receivers 

    Pinar Riasol, Ricard (Universitat Politècnica de Catalunya, 2017-03)
    Master thesis
    Open Access
    This thesis belongs to the remote sensing field, particularly on the Geostationary Synthetic Aperture Radar (SAR) imaging systems with on-ground receiver. These systems forms images taking the signals along the orbital ...
  • Breakwater settlement monitoring with InSAR data 

    Pros, Francesc; González López, Silvia; Martínez Benjamín, Juan José; Palau Teixidó, Vicenç; Duro, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    This paper presents a use case of the Persistent Scatterer Interferometry (PSI) technique apply to Civil Engineering to monitor the dikes settlement on the Port of Barcelona. A geostatistical analysis of the two available ...
  • Capon- and APES-based SAR processing: performance and practical considerations 

    López Dekker, Francisco J.; Mallorquí Franquet, Jordi Joan (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-05)
    Article
    Open Access
    This paper discusses the use of Capon’s minimumvariance method (MVM) and Amplitude and Phase EStimation (APES) spectral-estimation algorithms to synthetic aperture radar range–azimuth focusing. The rationale of the ...
  • Caracterització i extensió a plataformes aèries no tripulades d'un processador SAR basat en la tècnica Backprojection 

    Guarch Calvó, Arnau (Universitat Politècnica de Catalunya, 2016-07-08)
    Master thesis (pre-Bologna period)
    Open Access
    The aim of this project is the characterization of a SAR processor for the GB-SAR UPC technique based on backprojection. It has also been decided to make a first evaluation of the feasibility of usethe GB-SAR system in ...
  • Circular synthetic aperture radar (C-SAR) system for ground based applications 

    Broquetas Ibars, Antoni; Porrata-Dòria i Yagüe, Ramir de; Sagués Piella, Lluís; Fabregas Canovas, Francisco Javier; Jofre Roca, Lluís (IEE-INST ELEC ENG, 1997-05-01)
    Article
    Open Access
    The authors present an SAR system capable of obtaining radar images from measurements carried out with antennas that describe a circular trajectory centred outside the target region. The analytical formulation of the ...
  • Classification of multi-source satellite images for large scale land cover mapping 

    Juan, Enric (Universitat Politècnica de Catalunya, 2018-01)
    Master thesis
    Open Access
    Covenantee:  Centre d’Etudes Spatial de la Biosphere
    Satellite remote sensing imagery represents an attractive data source to monitor large regions with frequent updates. In this context, the operational production of accurate land cover maps plays an important role in ...
  • Cloud-based InSAR delivery architecture and mobile application 

    Casanova Yñiguez, Guillem (Universitat Politècnica de Catalunya, 2017-04)
    Bachelor thesis
    Restricted access - confidentiality agreement
  • Coastal bathymetry estimation using an ensemble of synthetic aperture radar images from Sentinel-1 

    Lamas, L.; Pinto, J.P.; Vilar, P.; Moura, A. (SARTI, 2018)
    Article
    Open Access
    In this study, coastal bathymetry is estimated with a wave ray-tracing algorithm using wave parameters retrieved from Synthetic Aperture Radar (SAR) images acquired by the Sentinel-1 satellites. The method relies on the ...
  • Coherence estimation in synthetic aperture radar data based on speckle noise modeling 

    López Martínez, Carlos; Pottier, Eric (Optical Society of America, 2007-02-28)
    Article
    Open Access
    In the past we proposed a multidimensional speckle noise model to which we now include systematic phase variation effects. This extension makes it possible to define what is believed to be a novel coherence model able to ...
  • Comparison of InSAR atmospheric phase screen correction with Global Atmospheric Models (GAM) 

    Hu, Zheng; Mallorquí Franquet, Jordi Joan (VDE Conference Publications, 2018)
    Conference report
    Restricted access - publisher's policy
    Variations of atmospheric conditions cause Atmospheric Phase Screen (APS) in Interferometric Synthetic Aperture Radar (InSAR), which affects accuracy and reliability of its applications. Recent studies reveal that empirical ...
  • Comparison of topography- and aperture-dependent motion compensation algorithms for airborne SAR 

    Prats Iraola, Pau; Câmara de Macedo, Karlus A.; Reigber, Andreas; Scheiber, Rolf; Mallorquí Franquet, Jordi Joan (IEEE, 2007-07-31)
    Article
    Open Access
    This letter presents a comparison between three Fourier-based motion compensation (MoCo) algorithms for airborne synthetic aperture radar (SAR) systems. These algorithms circumvent the limitations of conventional MoCo, ...
  • Complex domain analysis of random volume over ground model for forest height 

    Jorge Ruiz, Jorge (Universitat Politècnica de Catalunya, 2019-05-22)
    Master thesis
    Open Access
    This work focuses on the analysis of X-band Interferometric Synthetic Aperture Radar (InSAR) satellite acquisitions over forested areas in Estonia with the main goal of estimating forest tree height. The objective is to ...
  • Desenvolupament d'algoritmes de compensació de moviment per a SAR embarcat en sistema aeri no tripulat 

    Alabort Medina, Arnau (Universitat Politècnica de Catalunya, 2014-03)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] Study and development of the main image focus algorithms for a Synthetic Aperture Radar (SAR). First starts studying the basic focus techniques and then are implemented autofocus methods to correct the errors in ...
  • Design and Implementation of a GNSS reflectometer using a software defined radio 

    Olivé Muñiz, Roger (Universitat Politècnica de Catalunya, 2015-09)
    Master thesis
    Open Access
    The 3Cat-2 nanosatellite payload includes, amongst other experiments, a Global Navigation Satellite System Reflectometry (GNSS-R) receiver. The payload captures GNSS data from the two channels of a Software Defined Radio ...