Exploració per tema "Radar"
Ara es mostren els items 160-179 de 322
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Evaluation of different memory efficient methods for storage of radar-sensor occupancy maps
(Universitat Politècnica de Catalunya, 2011-03-17)
Projecte/Treball Final de Carrera
Accés restringit per decisió de l'autorDriver Assistance Systems are in-vehicle systems that improve security in the automobile and increase comfort while driving. They have been acquiring great importance in recent years and will be very relevant in the near ... -
Evaluation of state-of-the-art GMTI techniques for future spaceborne SAR systems -simulation validation-
(2012)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents an evaluation of the state-of-the-art Ground Moving Target Indication (GMTI) techniques in the frame of space-borne Synthetic Aperture Radar (SAR) for vessel detection by means of a flexible SAR-GMTI ... -
Experimental comparison of different scattering mechanism selections for vegetation height retrieval by POLINT
(Institute of Electrical and Electronics Engineers (IEEE), 2000)
Text en actes de congrés
Accés obertThe application of polarimetric radar interferometry to the estimation of vegetation height is studied. A comparison between different choices for the scattering mechanisms employed in the retrieval algorithm is presented. ... -
Extended kalman filter for interferometric precise orbit determination of geostationary satellites
(Universitat Politècnica de Catalunya, 2021-07-21)
Treball Final de Grau
Accés restringit per acord de confidencialitat -
Extraction of biomedical parameters from high resolution radar
(Universitat Politècnica de Catalunya, 2018-10)
Treball Final de Grau
Accés restringit per decisió de l'autorThe advancement of RADAR technology has allowed it to expand its use and applications beyond its traditional role. Among them, it highlights its potential as a medical diagnostic tool for biological signals that can allow ... -
Extraction of vegetation structure and surface parameters using polarimetric and interferometric SAR techniques
(Institute of Electrical and Electronics Engineers (IEEE), 2000)
Text en actes de congrés
Accés obertPresents different polarimetric and interferometric inversion radar approaches to extract the characteristics of vegetation and bare soil surfaces. The inversion techniques presented make use of multifrequency, radar ... -
Fast algorithms for radar cross section computation of complex objects
(Centre national d'études des télécommunications (CNET), 1990)
Text en actes de congrés
Accés obertRadar cross section (RCS) of complex targets can be obtained in real time using the hardware capabilities of a high performance graphic workstation. Target geometry is modelled by a computer-aided design package. First ... -
Fast shadowing computation in physical optics surface
(2013)
Text en actes de congrés
Accés restringit per política de l'editorialGRECO code has been updated by replacing the graphical processing technique for computation of Physical Optics surface integral by a hybrid CPU-graphical processing approach. The resulting code needs more CPU power for ... -
Feasibility of RFI mitigation in synthetic aperture radiometery based on subspace spatial filtering
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Text en actes de congrés
Accés restringit per política de l'editorialThe impact of Radio Frequency Interference (RFI) is a very serious problem for spaceborne microwave radiometry. Many Soil Moisture Ocean Salinity (SMOS) images show serious contamination by the RFI. SMOS is even more ... -
Filtering and segmentation of polarimetric SAR data based on binary partition trees
(IEEE Press. Institute of Electrical and Electronics Engineers, 2012-02)
Article
Accés restringit per política de l'editorialIn this paper,we propose the use of binary partition trees (BPT) to introduce a novel region-based and multi-scale polarimetric SAR (PolSAR) data representation. The BPT structure represents homogeneous regions in the ... -
Formación de imágenes 3D de reflectividad radar en campo próximo con geometría de exploración esférica
(1994)
Text en actes de congrés
Accés obertThis document presents an algorithm for the reconstruction of 3D radar reflectivity images using spherical-wave ISAR techniques. The target is illuminated with an spherical wave and near-field backscatterig measurements ... -
Formación de imágenes ISAR de alta resolución
(1992)
Text en actes de congrés
Accés obertThis paper presents the results of ISAR processing of RCS measurements performed over a broad frequency band (12 GHz - 40 GHz). The main purpose is to reach the highest resolution in reflectivity maps in order to identify ... -
Formación de imágenes radar de apertura sintética (SAR) de precisión mediante técnicas de retroproyección
(Universitat Politècnica de Catalunya, 2015-05-13)
Projecte/Treball Final de Carrera
Accés obert[ANGLÈS] Satellite, aircraft, drone or rail based on synthetic aperture radars (SAR) offer the opportunity to study landslides and changes occurred to the Earth through the processing of the signal received by the system. ... -
Fully-focused delay-doppler processing algorithms for radar altimetry systems
(Universitat Politècnica de Catalunya, 2020-07)
Projecte Final de Màster Oficial
Accés restringit per acord de confidencialitatEvaluation of ice-height change in Antartica, forecasting river discharges or estimating water surface elevation in coastal waters are some of many applications of Altimetry science. The main objective of a satellite Radar ... -
Ganancia de detectabilidad en radares de alta resoluciónç
(1992)
Text en actes de congrés
Accés obertThe paper presents an evaluation of a high resolution technique intended to enhance the radar detectability of targets. The method is based on the coherent integration of the individually resolved target scatterers. The ... -
GEMINI: geosynchronous SAR for Earth monitoring by interferometry and imaging
(Institute of Electrical and Electronics Engineers (IEEE), 2012)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper we discuss a preliminary design for a constellation of geosynchronous (GEO) Synthetic Aperture Radars (SAR). The key design concept is to employ one or more pairs of closely-spaced twin receivers flown ... -
Generació eficient d'interferogrames diferencials mitjantçant un DEM extrem
(Universitat Politècnica de Catalunya, 2008-12-15)
Projecte/Treball Final de Carrera
Accés obertAquest projecte està emmarcat en el camp de la interferometria, una aplicació que permet tenir informació al llarg de l’eix d’observació d’una escena. La informació d’alçada s’extreu a partir del que s’anomena interferograma, ... -
Generación de clutter radar coherente y correlado con estadística tipo K o de Hankel
(1989)
Text en actes de congrés
Accés obertThis paper presents an exogenous model to generate K-distributed, coherent and correlated clutter. This model has been tested for exponencial and gaussian autocorrelation functions, showing good fits for autocorrelation ... -
GeoSAR Mission: Orbit Determination Techniques for a Ground-based Interferometer System
(Universitat Politècnica de Catalunya, 2018-03)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorThe aim of Geostationary Synthetic Aperture Radar (GeoSAR) missions is to obtain daily images of events that take place over the Earth's surface. Some of them are critical to monitor (e.g. land stability control, natural ... -
Geostationary radar orbit determination from radar interferometry
(Universitat Politècnica de Catalunya, 2016-06)
Treball Final de Grau
Accés obertGeostationary Synthetic Aperture Radars require a precise orbit modelling to obtain high resolutions images of the Earth. Applying interferometric techniques to single received signal from pairs of ground stations it is ...
