Exploració per tema "Radar"
Ara es mostren els items 229-248 de 321
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Object detection with radar : present and future automotive technology
(Universitat Politècnica de Catalunya, 2022-07-20)
Treball Final de Grau
Accés obert
Realitzat a/amb: Hochschule für Technik und Wirtschaft DresdenRadar-based object detection in cars is an integral part of autonomous driving systems. Radar sensors benefit from their excellent robustness in adverse weather conditions such as snow, fog or heavy rain. Although machine ... -
Obtención de imágenes ISAR de blancos móviles
(1992)
Text en actes de congrés
Accés obertA new method for motion compensation has been developed for radar imaging of moving targets (ISAR). Phase shifts (due to target motion) among adjacent pulses from a STEPPED FREQUENCY signal, are removed with a parabolic ... -
Obtención de mapas de detección en escenarios marítimos mediante simulación paramétrica en sistemas SAR-MTI
(Universitat Politècnica de Catalunya, 2014-04-28)
Projecte/Treball Final de Carrera
Accés obert[ANGLÈS] This project is a small part of a larger project called SIMTISYS. The purpose of SIMTISYS is to simulate the behavior of a synthetic aperture radar with moving target indication (MTI) capabilities in maritime ... -
On the amount of information content in microwave radiometry for wet delay correction
(Aalto University, 2016)
Text en actes de congrés
Accés restringit per política de l'editorialThe scope of this work is the determination of the set of optimum frequencies to be used in the companion microwave radiometers in future synthetic aperture radar altimeters, to provide higher spatial resolution of the ... -
On the use of the l(2)-norm for texture analysis of polarimetric SAR data
(Institute of Electrical and Electronics Engineers (IEEE), 2016-11-01)
Article
Accés obertIn this paper, the use of the l2-norm, or Span, of the scattering vectors is suggested for texture analysis of polarimetric synthetic aperture radar (SAR) data, with the benefits that we need neither an analysis of the ... -
On-board phase and modulus calibration of large aperture synthesis radiometers: study applied to miras.
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1996-07-01)
Article
Accés obertOn-board calibration of bidimensional aperture synthesis radiometers with a large number of antennas by the standard correlated noise injection method is technologically very critical because of the stringent requirements ... -
Optical Doppler shift with structured light
(2011-11-15)
Article
Accés obertWhen a light beam with a transverse spatially varying phase is considered for optical remote sensing, in addition to the usual longitudinal Doppler frequency shift of the returned signal induced by the motion of the scatter ... -
Optimización de detectores no paramétricos aplicados a radar
(1983)
Text en actes de congrés
Accés obertEn esta comunicación se introduce un nuevo esquema de detector no paramétrico para aplicación Radar y se discuten brevemente sus prestaciones. En el 1er apartado se justifica la aparición de los detectores no paramétricos ... -
Optimización de un Centro de Fusión CFAR para Sistemas Distribuidos RADAR
(1991)
Text en actes de congrés
Accés restringit per política de l'editorialDistributed detection theory is widely used in surveillance systems that recquire a large area of coverage and a large number of targets under consideration. In this paper an optimization algorithm for distributed systems ... -
PARSAR: A SAR processor implemented in a cluster of workstations
(ESA Publications Division, 1997)
Text en actes de congrés
Accés obertA parallel SAR processor is presented in this paper. The target configuration is a cluster of UNIX workstations, available in most user sites. This fact allows to obtain an increased computing performance without the need ... -
Performance assessment of a homodyne laser radar for surface displacement monitoring
(Spie-Int Society Optical Engineering, 2001-12-31)
Article
Accés obert -
Phase codification optimization of a pulse radar
(Universitat Politècnica de Catalunya, 2018-10-30)
Treball Final de Grau
Accés obertIn this project, a study about Barker codes and poly-phase codes is done, with the goal to create a search engine, to find a poly-phase sequence with given parameters using Matlab. First of all, the basic concepts to ... -
Phase quality optimization in Orbital Differential SAR Interferometry with fully polarimetric data
(IEEE, 2012)
Text en actes de congrés
Accés restringit per política de l'editorialOrbital Differential SAR Interferometry (DInSAR) is a well-known technique to retrieve terrain deformation phenomena from wide areas with high resolution. Historically its application has been limited to single polarization ... -
Phased-Array Antenna Calibration and Cross-polarization improvement of an X-band Weather Radar
(Universitat Politècnica de Catalunya, 2015-10)
Projecte/Treball Final de Carrera
Accés obert
Realitzat a/amb: University of Massachusetts at AmherstDual-polarized phased-array radars used for weather retrieval purposes is an emerging tendency over the last few years. The dual-polarization technology provides an expanded range of weather products and the reliability ... -
Planetary boundary layer height variability over Athens, Greece, based on the synergy of Raman lidar and radiosonde data: application of the Kalman filter and other techniques (2011-2016)
(EDP Sciences, 2017)
Comunicació de congrés
Accés obertThe temporal evolution of the Planetary Boundary Layer height over Athens, Greece for a 5-year period (2011-2016) is presented. Using the EOLE Raman lidar system, the range-corrected lidar signals were selected around 12:00 ... -
Polarimetric coherence optimization for interferometric differential applications
(2009)
Text en actes de congrés
Accés obertIn this paper, the potentials of polarimetric coherenceoptimization techniques for differential interferometric SAR (DInSAR) applications are examined. For this purpose, the cutting-edge approaches available in the ... -
Polarimetric radar interferometry for improved mine detection and surface clutter rejection
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-06-30)
Article
Accés obertA recently developed technique, polarimetric radar interferometry, is applied to tackle the problem of the detection of buried objects embedded in surface clutter. An experiment with a fully polarimetric radar in an anechoic ... -
Polarimetric speckle noise effects in quantitative physical parameters retrieval
(IEE-INST ELEC ENG, 2006-06-30)
Article
Accés obertQuantitative estimation of physical parameters of the Earth's surface is currently an active area of research. Multidimensional synthetic aperture radar (SAR) systems appear in this framework as a tool capable of performing ... -
Polarimetric techniques for SAR contrast and resolution enhancement
(Institute of Electrical and Electronics Engineers (IEEE), 1999)
Text en actes de congrés
Accés obert -
Polarimetric temporal analysis of urban environments with a ground-based SAR
(Institute of Electrical and Electronics Engineers (IEEE), 2013-04)
Article
Accés restringit per política de l'editorialRevisiting time constitutes a key constraint for continuous monitoring activities based on space- and airborne synthetic aperture radar (SAR) acquisitions. Conversely, the employment of terrestrial platforms overcomes ...