Exploració per tema "Synthetic aperture radar"

Ara es mostren els items 41-60 de 201

    • Basic principles of SAR polarimetry 

      López Martínez, Carlos; Pottier, Eric (Springer, 2021)
      Capítol de llibre
      Accés obert
      This chapter critically summarizes the main theoretical aspects necessary for a correct processing and interpretation of the polarimetric information towards the development of applications of synthetic aperture radar (SAR) ...

    • BIBLOS for simulation of the Earth observation missions 

      Kedzierawski, Robert; Oryszczak, Wojciech; Szczepankiewicz, Karolina; Camps Carmona, Adriano José; Hyuk, Park; Barrios García, Pedro A. (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      End-to-End Mission Performance Simulators for Earth Observation missions are one of the prominent tools for system design and scientific validation in early mission phases. The European Space Agency has promoted efforts ...

    • Bilateral distance based filtering for polarimetric SAR data 

      Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean; Deng, Xinping (2013-10-30)
      Article
      Accés obert
      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 ...

    • Biomass End-to-End PErformance Simulator: Description of the ionosphere module 

      Camps Carmona, Adriano José; Barbosa, José; Nestoras, Ioannis; Jordão, Adriano; Sanjuán Ferrer, María José; Rodríguez Cassola, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés obert
      ESA's BIOMASS Earth Explorer mission aims at providing global above ground forest biomass. Its payload is a UHF synthetic aperture radar. At UHF ionospheric effects, notably the group delay and phase advance, the Faraday ...

    • 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)
      Projecte Final de Màster Oficial
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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)
      Projecte Final de Màster Oficial
      Accés obert
      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 ...

    • Boreal forest classification and monitoring using Sentinel-1 coherence information 

      Herrera Gimenez, Marc (Universitat Politècnica de Catalunya, 2022-07-12)
      Projecte Final de Màster Oficial
      Accés obert
      Many works in the world of Earth observation focus on forest monitoring and classification to analyze the evolution and impact on the planet and society, notably for climate change. In all those studies, using Synthetic ...

    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...

    • Built-up area mapping using Sentinel-1 SAR data 

      Verma, Abhinav; Bhattacharya, Avik; Dey, Subhadip; López Martínez, Carlos; Gamba, Paolo (Elsevier, 2023-09)
      Article
      Accés restringit per política de l'editorial
      A timely and accurate spatial mapping of built-up areas (BA) is crucial in making cities and human settlements safe, resilient, and sustainable. Synthetic Aperture Radar (SAR) data are useful for BA mapping due to strong ...

    • 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
      Accés obert
      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)
      Projecte/Treball Final de Carrera
      Accés obert
      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
      Accés obert
      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)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   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 ...

    • Classification of wheat and barley fields using high-resolution Sentinel-1 backscatter data 

      Domínguez Costa, Alejandro (Universitat Politècnica de Catalunya, 2020-06)
      Treball Final de Grau
      Accés obert
      In a world where food demand keeps increasing due to constant population growth, it is very important to ensure food supply to all the inhabitants despite the high arable land demand. To manage that, it is crucial that the ...

    • Cloud-based InSAR delivery architecture and mobile application 

      Casanova Yñiguez, Guillem (Universitat Politècnica de Catalunya, 2017-04)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat

    • 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
      Accés obert
      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 ...

    • Coastline detection based on Sentinel-1 time series for ship- and flood-monitoring applications 

      Pelich, Ramona; Chini, Marco; Hostache, Renaud; Matgen, Patrick; López Martínez, Carlos (2020-10)
      Article
      Accés obert
      This letter addresses the use of the Sentinel-1 time series with the aim of proposing an automatic and unsupervised coastline detection method that averages the dynamical variations of coastal areas over a limited period ...

    • 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
      Accés obert
      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 ...

    • Combination of fully focused sentinel-6 and interferometric CryoSat-2 to enhance sea ice retrievals 

      Guerra Bernal, Michel Enrique (Universitat Politècnica de Catalunya, 2023-06)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   isardSAT
      Radar altimetry has proven to be key in Earth observation when retrieving remote and systematic data for looking at long term trends, this is the case of the cryosphere monitoring. In this context, important missions ...