Exploració per autor "Comerón Tejero, Adolfo"
Ara es mostren els items 45-64 de 214
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Cálculo teórico de la relación señal a ruido en función del tamaño de la apertura receptora de un anemómetro láser doppler (LDA)
García Vizcaíno, David; Recolons Martos, Jaume; Dios Otín, Víctor Federico; Comerón Tejero, Adolfo (2004-09)
Text en actes de congrés
Accés obertFrom the expressions by Adrian and Earley (Proceeding of Minessota Symposium on Laser Anemometry, University of Minessota, Dept. of Conference, Minneapolis, 1976), we have calculated the signal-to-noise ratio of a Laser ... -
Characterization of Tajogaite volcanic plumes detected over the Iberian Peninsula from a set of satellite and ground-based remote sensing instrumentation
Salgueiro, Vanda; Guerrero Rascado, Juan Luis; Costa, Maria João; Román, Roberto; Cazorla, Alberto; Serrano, Antonio; Molero, Francisco; Sicard, Michaël; Cordoba Jabonero, Carmen; Bortoli, D.; Comerón Tejero, Adolfo; Couto, Flavio Tiago; López Cayuela, María Ángeles; Pérez Ramírez, Daniel; Potes, Miguel; Muñiz Rosado, Jorge Andrés; Obregón, M.A.; Barragán, Rubén; Abril Gago, Jesús; González Catón, Ramiro; Gil Díaz, Cristina; Foyo Moreno, I.; Muñoz Porcar, Constantino; Granados Muñoz, María José; Rodríguez Gómez, Alejandro Antonio; Herreras Giralda, A.; Bravo Aranda, Juan Antonio; Carvajal Pérez, Clara Violeta; Barreto Velasco, África; Alados Arboledas, Lucas (2023-06-13)
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Accés obertThree volcanic plumes were detected during the Tajogaite volcano eruptive activity (Canary Islands, Spain, September–December 2021) over the Iberian Peninsula. The spatiotemporal evolution of these events is characterised ... -
CI de microondas. Aplicaciones y mercado
Artal, Eduardo; Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi (1988-10)
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CI de microondas. Tecnologías
Artal, Eduardo; Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi (1988-09)
Article
Accés restringit per política de l'editorialLos circuitos integrados monolíticos de microondas presentan ventajas potenciales respecto de los circuitos híbridos habituales en cuanto a fiabilidad, reducido tamaño y peso, banda ancha y bajo coste. Se describe el estado ... -
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
Lolli, Simone; Sicard, Michaël; Amato, Francesco; Comerón Tejero, Adolfo; Gil Díaz, Cristina; Landi, Tony C.; Muñoz Porcar, Constantino; Oliveira, Daniel Camilo Fortunato dos Santos; Dios Otín, Víctor Federico; Rocadenbosch Burillo, Francisco; Rodríguez Gómez, Alejandro Antonio; Alastuey Urós, Andrés; Querol Carceller, Xavier; Reche Andúgar, Cristina (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 ... -
Compact and Simple X 3 (9 to 27 GHz) Pll Frequency Multiplier Using Harmonic Phase Detection
Berenguer Sau, Jordi; Comerón Tejero, Adolfo (1987)
Text en actes de congrés
Accés obertFrequency multiplication in the microwave and millimeter-wave range can be performed in compact form using harmonic phase detectors, in which the veo phase is directly compared to a multiple of the reference frequency ... -
Compact lidar system using laser diode, binary continuous wave power modulation, and an avalanche photodiode-based receiver controlled by a digital signal processor
Ardanuy Dellà, Antoni; Comerón Tejero, Adolfo (2018-04-18)
Article
Accés obertWe analyze the practical limits of a lidar system based on the use of a laser diode, random binary continuous wave power modulation, and an avalanche photodiode (APD)-based photereceiver, combined with the control and ... -
Comparison between the Kalman and the non-linear least-squares estimators in low signal-to-noise ratio lidar inversion
Rocadenbosch Burillo, Francisco; Sicard, Michaël; Comerón Tejero, Adolfo; Md. Reba, Mohd Nadzri (2008)
Text en actes de congrés
Accés obertThis works departs from previously published results of the authors and focus on joint estimation and time evolution of the atmospheric backscatter profile and a range-independent lidar ratio by means of 1) adaptive extended ... -
Concept design of a multiwavelength aerosol lidar system with mitigated diattenuation effects and depolarization-measurement capability
Comerón Tejero, Adolfo; Sicard, Michaël; Vidal Calvo, Eric; Barragán Cuesta, Rubén; Muñoz Porcar, Constantino; Rodríguez Gómez, Alejandro Antonio; Tiana Alsina, Jordi; Rocadenbosch Burillo, Francisco; García Vizcaíno, David (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 ... -
Conmutador de microondas con transistor MESFET encapsulado
Comerón Tejero, Adolfo; Elias Fusté, Antoni (1985)
Text en actes de congrés
Accés obertA packaged GaAs MESFET has been used to implement a fast switch at frequencies around 12 GHz. The insertion loss in the ON state is approximately 2 dB between 9 and 13 GHz. In the OFF state the insertion loss can be higher ... -
Considerations about the determination of the depolarization calibration profile of a two-telescope lidar and its implications for volume depolarization ratio retrieval
Comerón Tejero, Adolfo; Rodríguez Gómez, Alejandro Antonio; Sicard, Michaël; Barragán Cuesta, Rubén; Muñoz Porcar, Constantino; Rocadenbosch Burillo, Francisco; Granados Muñoz, María José (Multidisciplinary Digital Publishing Institute (MDPI), 2018-06-04)
Article
Accés obertWe propose a new method for calculating the volume depolarization ratio of light backscattered by the atmosphere and a lidar system that employs an auxiliary telescope to detect the depolarized component. It takes into ... -
Contribución de la red de lidares EARLINET a la infraestructura europea de investigación atmosférica ACTRIS (Aerosols, Clouds, and Trace Gases Infrastructure Network).
Comerón Tejero, Adolfo; Sicard, Michaël; Rocadenbosch Burillo, Francisco (2012)
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Contribution of EARLINET/ACTRIS to the summer 2013 special observing period of the ChArMEx project: monitoring of a Saharan dust event over the western and central Mediterranean
Sicard, Michaël; Barragán Cuesta, Rubén; Muñoz Porcar, Constantino; Comerón Tejero, Adolfo; Mallet, Marc; Dulac, F; Pelon, Jacques; Alados Arboledas, Lucas; Amodeo, Aldo; Boselli, Antonella; Bravo Aranda, Juan Antonio; D'Amico, Giuseppe; Granados Muñoz, María José; Leto, Giuseppe; Guerrero Rascado, Juan Luis; Madonna, Fabio; Mona, Lucia; Pappalardo, Gelsomina; Perrone, Maria-Rita; Burlizzi, Pasquale; Rocadenbosch Burillo, Francisco; Rodríguez Gómez, Alejandro Antonio; Scollo, Simona; Spinelli, N.; Titos, Gloria; Wang, Xuan; Zanmar Sanchez, Ricardo (2016-10-22)
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Accés obertIn the framework of the Chemistry-Aerosol Mediterranean Experiment (ChArMEx; http://charmex.lsce.ipsl.fr/) initiative, a field campaign took place in the western Mediterranean Basin between 10 June and 5 July 2013 within ... -
Coupling optimization of point contact detectors and mixers
Bolomey, Jean Charles; Comerón Tejero, Adolfo (Institute of Electrical and Electronics Engineers (IEEE), 1979)
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Current research in lidar technology used for the remote sensing of atmospheric aerosols
Comerón Tejero, Adolfo; Muñoz Porcar, Constantino; Rocadenbosch Burillo, Francisco; Rodríguez Gómez, Alejandro Antonio; Sicard, Michaël (MDPI AG, 2017-06-20)
Article
Accés obertLidars are active optical remote sensing instruments with unique capabilities for atmospheric sounding. A manifold of atmospheric variables can be profiled using different types of lidar: concentration of species, wind ... -
Depolarization channel for barcelona lidar. Implementation and preliminary measurements
Rodríguez Gómez, Alejandro Antonio; Sicard, Michaël; Muñoz Porcar, Constantino; Barragán Cuesta, Rubén; Comerón Tejero, Adolfo; Rocadenbosch Burillo, Francisco; Vidal Calvo, Eric (EDP Sciences, 2018)
Comunicació de congrés
Accés obertA new depolarization channel has beenimplemented in the BarcelonaTech University(UPC) multi-wavelength lidar system. The opticaland mechanical designs are presented. The specialconfiguration of the total power channel is ... -
Design methodology of a ceilometer lidar prototype
Gregorio, Eduard; Rocadenbosch Burillo, Francisco; Comerón Tejero, Adolfo (2007)
Text en actes de congrés
Accés restringit per política de l'editorialThis article presents step-by-step applied methodology to design a 905-nm 5-kHz rep. rate diode-laser biaxial lidar ceilometer prototype beginning from the definition of initial specs, and related trade-offs to the first ... -
Determination of the mixing layer height from regular lidar measurements in the Barcelona area
Sicard, Michaël; Pérez López, Carlos; Comerón Tejero, Adolfo; Baldasano Recio, José María; Rocadenbosch Burillo, Francisco (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 ... -
Diffuse sunlight based calibration of the water vapor channel in the UPC Raman lidar
Muñoz Porcar, Constantino; Comerón Tejero, Adolfo; Sicard, Michaël; Barragán Cuesta, Rubén; García Vizcaíno, David; Rodríguez Gómez, Alejandro Antonio; Rocadenbosch Burillo, Francisco (EDP Sciences, 2017)
Comunicació de congrés
Accés obertA method for determining the calibration factor of the water vapor channel of a Raman lidar, based on zenith measurements of diffuse sunlight and on assumptions regarding some system parameters and Raman scattering models, ... -
Dimensionless parameterization of lidar for laser remote sensing of the atmosphere and its application to systems with SiPM and PMT detectors
Agishev, Ravil R.; Comerón Tejero, Adolfo; Rodríguez Gómez, Alejandro Antonio; Sicard, Michaël (2014-05-20)
Article
Accés obertIn this paper, we show a renewed approach to the generalized methodology for atmospheric lidar assessment, which uses the dimensionless parameterization as a core component. It is based on a series of our previous works ...