Exploració per tema "Radar òptic"
Ara es mostren els items 21-40 de 100
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Climatological assessment of the vertically resolved optical and microphysical aerosol properties by lidar measurements, sun photometer, and in situ observations over 17 years at Universitat Politècnica de Catalunya (UPC) Barcelona
(European Geosciences Union (EGU), 2023-10-13)
Article
Accés obertAerosols are one of the most important pollutants in the atmosphere and have been monitored for the past few decades by remote sensing and in situ observation platforms to assess the effectiveness of government-managed ... -
Concept design of a multiwavelength aerosol lidar system with mitigated diattenuation effects and depolarization-measurement capability
(EDP Sciences, 2016)
Comunicació de congrés
Accés obertIt is known that the retrieval of aerosol extinction and backscatter coefficients from lidar data acquired through so-called total-power channels – intended to measure the backscattered power irrespective of the polarization ... -
Concept design, analysis, and Integration of the new U.P.C. multispectral lidar system
(Universitat Politècnica de Catalunya, 2012-07-16)
Tesi
Accés obertThe increasing need for range-resolved aerosol and water-vapour atmospheric observation networks worldwide has given rise to multi-spectral LIDARs (Light Detection and Ranging, a synonym of laser radar) as advanced remote ... -
Convective boundary-layer height estimation from combined radar and Doppler lidar observations in VORTEX-SE
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
Text en actes de congrés
Accés obertThe Verification of the Origins of Rotation in Tornadoes Experiment Southeast (VORTEX-SE) provides a wealth of long-duration, high-resolution, vertically pointing observations from active and passive ground-based remote ... -
Data fusion of lidar and RGB cameras
(Universitat Politècnica de Catalunya, 2018-07-19)
Projecte Final de Màster Oficial
Accés restringit per acord de confidencialitatLight Detection and Ranging - LiDAR or LIDAR - has traditionally been used for making high-resolution maps in a huge variety of geological applications due to its 2D and 3D point cloud mappings. Additionally, it has recently ... -
Desarrollo de una cámara lidar para aplicaciones de imagen 3D de tiempo real
(Ediciones Universidad de Salamanca, 2015)
Text en actes de congrés
Accés restringit per política de l'editorialEste trabajo presenta las etapas del desarrollo de un nuevo sistema de cámara lidar para la generación de imagen tridimensional. Basado en la técnica de tiempo de vuelo, se mediante la cámara se generan nubes de puntos que ... -
Determination of the mixing layer height from regular lidar measurements in the Barcelona area
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2003)
Text en actes de congrés
Accés obertRegular aerosol backscatter measurements using an elastic-backscatter lidar were performed between May 2000 and November 2002 in Barcelona (Spain), in the frame of EARLINET (European Aerosol Research Lidar Network). The ... -
Determination of the overlap factor and its enhancement for medium-size tropospheric lidar systems: a ray-tracing approach
(2013-01-31)
Article
Accés restringit per política de l'editorialThe problem of overlap factor (OVF) computation and its near-range sensitivity for medium-size aperture ( f ∕ 10 , f ∕ 11 ) bi-axial tropospheric lidar systems using ray-tracing sim- ulation software is presented. ... -
Direct, longwave radiative forcing of mineral dust: improvement of its estimation by means of tools recently developed by the EARLINET community
(EDP Sciences, 2016)
Text en actes de congrés
Accés obertThe objective of this work is to investigate how the knowledge of the vertically-resolved fine and coarse mode aerosol optical depth modifies the longwave radiative forcing. Since relatively little the EARLINET (European ... -
Disseny d'un canal de despolarització a 532 nm per al lidar d'EARLINET de la UPC
(Universitat Politècnica de Catalunya, 2013-03-14)
Projecte/Treball Final de Carrera
Accés obert[ANGLÈS] Design of a depolarization channel at the wavelength of 532 nm for the UPC EARLINET lidar -
Disseny d'un sistema radar per la detecció de petroli al mar
(Universitat Politècnica de Catalunya, 2008-04-21)
Projecte/Treball Final de Carrera
Accés obert -
Enhanced dual filter for floating wind lidar motion correction: The impact of wind and initial scan phase models
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-09-21)
Article
Accés obertAn enhanced filter for floating Doppler wind lidar motion correction is presented. The filter relies on an unscented Kalman filter prototype for floating-lidar motion correction without access to the internal line-of-sight ... -
Error analysis for the lidar backward inversion algorithm
(OPTICAL SOC AMER, 1999-04-30)
Article
Accés obertHere we depart from the inhomogeneous solution of a lidar equation using the backward inversion algorithm that is nowadays generally referred to as the Klett method. In particular, we develop an error sensitivity study ... -
Estimation of gravimetric vegetation moisture in the western United States using a multi-sensor approach
(Institute of Electrical and Electronics Engineers (IEEE), 2023)
Text en actes de congrés
Accés obertVegetation optical depth (VOD) depends on the water, structure, and biomass of vegetation. Here, we propose a multi-sensor approach to isolate the water component from the VOD and to retrieve gravimetric vegetation moisture ... -
Estimation of wave period from pitch and roll of a lidar buoy
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-02-12)
Article
Accés obertThis work proposes a new wave-period estimation (L-dB) method based on the power-spectral-density (PSD) estimation of pitch and roll motional time series of a Doppler wind lidar buoy under the assumption of small angles ... -
Estudi del seguiment entre vehicles coordinats de forma autònoma
(Universitat Politècnica de Catalunya, 2021-07-22)
Treball Final de Grau
Accés restringit per decisió de l'autorEl guiatge autònom de vehicles és a l’actualitat una tendència que va en augment dins de sectors com ara el sector industrial i l’automoció. Aquest projecte es centrarà en el guiatge d’un vehicle autònom mitjançant les ... -
Evaluation of the quality of Lidar measurements for foggy scenes
(Universitat Politècnica de Catalunya, 2021-09-10)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autor
Realitzat a/amb: Universitat de Barcelona / Universitat Autònoma de Barcelona / Institut de Ciències Fotòniques (ICFO)Light Detection and Ranging (LiDAR) is a remote sensing technology. The ability to perform 3D mapping of its surroundings with good resolution using Time of Flight (TOF) information made LiDAR a promising candidate for use ... -
Floating Doppler Wind Lidar measurement of wind turbulence: a cluster analysis
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Text en actes de congrés
Accés obertThe standard deviation of the Horizontal Wind Speed as a proxy of wind turbulence is used to compare the apparent wind turbulence measured by an off-shore floating Doppler lidar to the one measured by a fixed lidar on a ... -
Floating Doppler Wind Lidar motion simulator for horizontal wind speed measurement error assessment
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Text en actes de congrés
Accés obertThis study presents a wind retrieval simulator of a floating Doppler Wind Lidar (DWL) with 6 Degrees of Freedom (DoF) motion. The simulator considers a continuous-wave conical-scanning floating DWL which retrieves the wind ... -
Floating lidar assessment of atmospheric stability in the North Sea
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Text en actes de congrés
Accés obertIn this work, the 2D parametric-solver algorithm [1] used to assess atmospheric stability from floating Doppler wind lidar (FDWL) measurements is revisited. The algorithm performance is studied using data from IJmuiden ...
