Exploració per tema "Radar imaging"
Ara es mostren els items 1-13 de 13
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A comparison of phase unwrapping techniques in synthetic aperture radar interferometry
(Institute of Electrical and Electronics Engineers (IEEE), 1999)
Text en actes de congrés
Accés obertA comparison of different phase unwrapping techniques based on the least mean square error is presented. A testing environment based on simulated interferograms has been created in order to assess the methods described in ... -
A new spectral analysis algorithm for SAR data processing of ScanSAR data and medium resolution data without interpolation
(Institute of Electrical and Electronics Engineers (IEEE), 1998)
Text en actes de congrés
Accés obertThis paper describes a new approach for ScanSAR data image generation, which performs efficient data processing and multilook operation without the need of interpolation stages. This new technique is based on the spectral ... -
Accuracy assessment of SAR interferometry using the ERS-1
(Institute of Electrical and Electronics Engineers (IEEE), 1995)
Text en actes de congrés
Accés obertA 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 ... -
An adaptive scattering-mechanism-based filtering for multi-temporal pol(In)SAR data
(VDE Conference Publications, 2018)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents a new adaptive filtering method for multi-temporal Pol(In)SAR images' denoising. Based on the polarimetric scattering mechanism of the given PolSAR data, the filtering first classifies all pixels into ... -
Automatic vessel monitoring with single and multidimensional SAR images in the wavelet domain
(ELSEVIER SCIENCE BV, 2006-12-31)
Article
Accés obertSpaceborne 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 ... -
Brightness-temperature retrival methods in synthetic aperture radiometers
(IEEE, 2009-01)
Article
Accés obertBightness-temperature retrieval techniques for synthetic aperture radiometers are reviewed. Three different approaches to combine measured visibility and antenna temperatures, along with instrument characterization ... -
Fusing Landsat and SAR data for mapping tropical deforestation through machine learning classification and the PVts-ß non-seasonal detection approach
(2021-07-26)
Article
Accés obertThis article focuses on mapping tropical deforestation using time series and machine learning algorithms. Before detecting changes in the time series, we reduced seasonality using Photosynthetic Vegetation (PV) index ... -
Generation of precise wide-area geocoded elevation models with ERS SAR data
(Institute of Electrical and Electronics Engineers (IEEE), 1999)
Text en actes de congrés
Accés obertThe authors present an improved technique for the generation of digital elevation models (DEM), capable of dealing with full scene images (100×100 km) coming from an interferogram obtained with ERS satellite data. Starting ... -
Interferometric SAR signal analysis in the presence of squint
(Institute of Electrical and Electronics Engineers (IEEE), 1999)
Text en actes de congrés
Accés obertIn the following paper an analysis of the SAR impulse response signal from the interferometric point of view is expounded, with the intention of studying its phase behaviour in the presence of high squint values. The work ... -
SAR interferometric coherence in wide band systems
(VSP BV, 2000-02-28)
Article
Accés obertThis paper presents a study of the interferometric coherence aimed to the understanding of the main sources of phase error of an operative wide band system. This objective is accomplished by finding a theoretical expression ... -
Sparsity-based radar imaging of building structures
(Institute of Electrical and Electronics Engineers (IEEE), 2012)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper, we address imaging of the interior structure of a building using a reduced number of measurements in through-the-wall imaging and urban sensing applications. Unlike majority of the feature detection methods ... -
Spherical wave near-field imaging and radar cross-section measurement
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-05-31)
Article
Accés obertThe paper presents a new inverse synthetic aperture radar (ISAR) algorithm intended for radar cross-section (RCS) imaging and measurement from scattered fields. The method, based on a spherical-wave near-field illumination ... -
Study of structural elements in heritage buildings with ground penetrating radar images
(2018)
Comunicació de congrés
Accés obertMaintenance and repairing or ancient buildings requires efforts and a wide knowledge of the structures. However, in many cases, the constructive methods, the distribution of supporting elements and the materials are unknown. ...