Exploració per tema "Radar d'obertura sintètica"
Ara es mostren els items 143-162 de 244
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Ku Band GB-SAR system integration and validation
(Universitat Politècnica de Catalunya, 2015-07-21)
Treball Final de Grau
Accés obertThis paper contains full detailed the process of calibration of the radar system with its measurements -
Local isotropy indicator for SAR image filtering: application to Envisat/ASAR images of the Doñana Wetland
(2015-04)
Article
Accés obertThis paper explores a geometrical and computationally simple operator, named Ds, for local isotropy assessment on SAR images. It is assumed that isotropic intensity distributions in natural areas, either textured or ... -
Local texture stationarity indicator for filtering Doñana wetlands SAR images
(IEEE, 2012)
Text en actes de congrés
Accés obertThis paper defines a new operator, named Ds, for local texture stationarity assessment on SAR images. . The aim is to discriminate heterogeneous targets from land cover types of high normalized variance values, as those ... -
Marine applications of SAR polarimetry
(Universitat Politècnica de Catalunya, 2007-07-11)
Tesi
Accés obertEls oceans mantenen una fràgil i complexa cadena que enllaça un alt nombre de factors biològics, sociològics i econòmics. Actualment, aquest ecosistema està amenaçat per l'activitat humana i uns dels punts més crítics és ... -
Marine pollution in European coastal waters monitored by the ERS-2 SAR: a comprehensive statistical analysis
(1999)
Text en actes de congrés
Accés obertThe oil pollution of the southern Baltic Sea, the North Sea, and the northwestern Mediterranean Sea has been studied within a two-year period from December 1996 until November 1998. In total, the authors have analyzed more ... -
Mathematical Morphology on the Sphere: Application to Polarimetric Image processing
(Universitat Politècnica de Catalunya, 2011-07-19)
Projecte/Treball Final de Carrera
Accés obert
Realitzat a/amb: Ecole nationale supérieure des mines de ParisEnglish: The fully polarimetric synthetic aperture radar (PolSAR) provides data containing the complete scattering information. Therefore, these data have drawn more attention in recent years. PolSAR data can be represented ... -
Micrometric deformation imaging at W-Band with GBSAR
(2017-02-17)
Article
Accés obertThe paper presents the experimental evaluation of 94 GHz CW-FM Radar that can be configured as a Ground Based SAR (Synthetic Aperture Radar) for high resolution imaging and deformation control. This system has been designed ... -
MIMO tracking radar performance analysis with reinforcement learning: SARSA and modified double SARSA approach
(Universitat Politècnica de Catalunya, 2023-10-24)
Treball Final de Grau
Accés obertMulti-Input Multi-Output (MIMO) radar systems have been extensively studied for their potential to enhance target tracking in complex environments. Recent advancements in the field of Artificial Intelligence (AI) and Machine ... -
Modeling fast boat motion impact on satellite SAR MTI systems
(2015-10-01)
Article
Accés obertThis letter analyzes the problems of imaging small and fast boats with synthetic aperture radar (SAR), which may experience severe defocusing and/or smearing. This situation is encountered, inter alia, in ocean traffic ... -
Models de reflectivitat del clutter marí per a la simulació d'imatges sar
(Universitat Politècnica de Catalunya, 2015-03)
Projecte/Treball Final de Carrera
Accés obert[ANGLÈS] This paper aims to explain the concept of sea reflectivity, the physical model to characterize sea clutter and effects on backscattering coefficient changes in wavelength, grazing angle, polarization and sea ... -
Modified oriented dihedral model for scattering characteristic description with PolSAR data
(Institute of Electrical and Electronics Engineers (IEEE), 2024-01-19)
Article
Accés obertDihedral is a common structure in polarimetric SAR images and can be found on many man-made targets. Many researchers have proposed different dihedral models, but the accuracy of these models is limited. In this case, the ... -
Monitoring changes in the coastal environment based on SAR Sentinel-1 time-series
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Text en actes de congrés
Accés obertThis research addresses the use of Sentinel-1 time series with the aim of detecting spatio-temporal changes in the coastal environment. To this end an automatic and unsupervised coastline detection method is proposed. ... -
Monitorización y deformaciones del terreno mediante teledetección radar
(Universitat Politècnica de Catalunya, 2005)
Projecte/Treball Final de Carrera
Accés restringit per decisió de l'autorEste proyecto, realizado en el Instituto de Geomática en colaboración con la unidad de Teledetección Activa, está dedicado a un particular tipo de aplicación de la teledetección: la medida de las deformaciones del terreno. El ... -
Multidimensional and temporal SAR data representation and processing based on binary partition trees
(Universitat Politècnica de Catalunya, 2014-06-13)
Tesi
Accés obertThis thesis deals with the processing of different types of multidimensional SAR data for distinct applications. Instead of handling the original pixels of the image, which correspond to very local information and are ... -
Multidimensional SAR data analysis based on binary partition trees and the covariance matrix geometry
(2014)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper, we propose the use of the Binary Partition Tree (BPT) as a region-based and multi-scale image representation to process multidimensional SAR data, with special emphasis on polarimetric SAR data. We also ... -
Multidimensional SAR data representation and processing based on Binary Partition Trees
(Universitat Politècnica de Catalunya, 2011-07-20)
Projecte Final de Màster Oficial
Accés obertEnglish: A novel multidimensional SAR data abstraction is presented, based on Binary Partition Trees (BPT). This data abstraction is employed for different applications, as data filtering and segmentation, change detection, ... -
Multidimensional speckle noise. Modelling and filtering related to sar data.
(Universitat Politècnica de Catalunya, 2003-06-02)
Tesi
Accés obertLos Radares de Apertura Sintética, o sistemas SAR, representan el mejorejemplo de sistemas activos de teledetección por microondas. Debido a su naturaleza coherente, un sistema SAR es capaz de adquirir información dedispersión ... -
Multifractal analysis of SAR of the ocean surface, currents, eddy structure, oil slicks and diffusivity analysis
(2010)
Comunicació de congrés
Accés restringit per política de l'editorial -
Multiscale analysis of SAR from the earth surface
(Universidad Complutense de Madrid (UCM), 2010)
Comunicació de congrés
Accés obertThe use of Synthetic Aperture Radar (SAR) to investigate the earth’s surface provides a wealth of useful information. Here we will discuss some recent fractal and multi-fractal techniques used to identify oil spills and ... -
Multitemporal SAR and polarimetric SAR optimization and classification: Reinterpreting temporal coherence
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Article
Accés obertIn multitemporal synthetic aperture radar (SAR) and polarimetric SAR (PolSAR), coherence is a capital parameter to exploit common information between temporal acquisitions. Yet, its use is limited to high coherences. This ...