Exploració per autor "Durán Martínez, Israel"
Ara es mostren els items 1-20 de 26
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A new space technology for ocean observation: the SMOS mission
Font Ferré, Jordi; Ballabrera Poy, Joaquim; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Durán Martínez, Israel; Emelianov Kolomitski, Mikhail; Enrique González, Luis; Fernández Gallego, Pedro; Gabarró Prats, Carolina; González, Cristina; González, Veronica; Gourrion, J.; Guimbard, S.; Hoareau, N.; Julià, A; Kalaroni, S.; Konstantinidou, Anna; Aretxabaleta, L.; Martínez, Justino; Miranda, Jorge Miguel; Monerris Belda, Alessandra; Montero, Sergio; Mourre, B.; Pablos Hernández, Miriam; Pérez Villar, Fernando; Piles Guillem, Maria; Portabella, M.; Sabia, R.; Salvador, Joaquin; Talone, Marco; Torres Torres, Francisco; Turiel Martínez, Antonio; Vall-Llossera Ferran, Mercedes Magdalena; Villarino Villarino, Ramón (2012)
Article
Accés restringit per política de l'editorialCapability for sea surface salinity observation was an important gap in ocean remote sensing in the last few decades of the 20th century. New technological developments during the 1990s at the European Space Agency led to ... -
Calibration of the MIRAS Radiometers
Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Durán Martínez, Israel; González Gambau, Verónica; Oliva Balagué, Roger; Closa, Josep; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2018-12-21)
Article
Accés obertThe microwave imaging radiometer with aperture synthesis (MIRAS) is formed by 69 total power radiometers, of which three are the noise-injection type. Their calibration is reviewed on the basis of the data gathered during ... -
Contribution to advanced sensor development for passive imaging of the Earth
Durán Martínez, Israel (Universitat Politècnica de Catalunya, 2017-11-20)
Tesi
Accés obertThis work has been formally undertaken within the frame of the scholarship number BES-2012-053917 of 1 December 2012, by the "Secretario de Estado de Investigación del Ministerio de Economía y Competitividad" related to ... -
Deriving VTEC maps from SMOS radiometric data
Rubino, Roselena; Duffo Ubeda, Núria; González Gambau, Verónica; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Durán Martínez, Israel; Martín Neira, Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-01)
Comunicació de congrés
Accés obertIn this work, a new methodology is proposed in order to derive vertical total electron content (VTEC) maps from the radiometric measurements of the Soil Moisture and Ocean Salinity (SMOS) mission as an alternative approach ... -
External calibration of MIRAS/SMOS Instrument Drift and SuperMIRAS Error Budget
Durán Martínez, Israel (Universitat Politècnica de Catalunya, 2013-04)
Projecte Final de Màster Oficial
Accés obert[ANGLÈS] This Master Thesis is a collection of all research activities developed to analyze the temperature drift of MIRAS instrument and perform amplitude calibration during the operational SMOS mission. Moreover, some ... -
Impact of amplitude calibration errors on SMOS global images
Durán Martínez, Israel; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Oliva, Roger; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialSome of the artifacts observed in SMOS brightness temperature images are originated in an inconsistency between correlation and antenna temperature calibration errors, which produces a multiplicative bias that scales with ... -
Impact of antenna tuning on SMOS correlation loss
Torres Torres, Francisco; Durán Martínez, Israel; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Closa, Josep; Oliva, Roger; Martín-Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialThe Soil Moisture and Ocean Salinity (SMOS) mission by the European Space Agency (ESA) was launched in 2009 [1]. Since then, it has produced a continuous stream of valuable geophysical data over land, ice and ocean [2] ... -
Impact of correlator efficiency errors on SMOS land-sea contamination
Corbella Sanahuja, Ignasi; Durán Martínez, Israel; Wu, Lin; Torres Canals, Francesc; Duffo Ubeda, Núria; Khazaal, Ali; Martín Neira, Manuel (2015-09-01)
Article
Accés obertLand-sea contamination observed in Soil Moisture and Ocean Salinity (SMOS) brightness temperature images is found to have two main contributions: the floor error inherent of image reconstruction and a multiplicative error ... -
MIRAS calibration and performance: results from the SMOS in-orbit commissioning phase
Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; González Gambau, Veronica; Pablos Hernández, Miriam; Durán Martínez, Israel; Martín Neira, Manuel (IEEE Press. Institute of Electrical and Electronics Engineers, 2011-09)
Article
Accés restringit per política de l'editorialAfter the successful launching of the Soil Moisture and Ocean Salinity satellite in November 2009, continuous streams of data started to be regularly downloaded and made available to be processed. The first six months of ... -
Mitigation of cross-polar antenna pattern errors in SMOS: simplified approach
Durán Martínez, Israel; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Lin, Wu; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper analyzes a simplified image reconstruction method that exclusively takes into account the dominant antenna pattern terms to model image inversion artifacts and mitigate SMOS polarimetric spatial bias over the ... -
One-point microwave radiometer calibration
Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Closa Soteras, Josep; Duffo Ubeda, Núria; Durán Martínez, Israel; González Gambau, Verónica; Martín Neira, Manuel (2020-03-01)
Article
Accés obertA method for internally calibrating microwave total power radiometers by using only one level of noise injection is presented. It is based on having a previous accurate characterization of the receiver noise temperature, ... -
Practical issues on SMOS single antenna patterns
Wu, Lin; Durán Martínez, Israel; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Closa, Josep; Manrique, Rodrigo; Garcia, Quiterio; Oliva Balagué, Roger; Martín Neira, Manuel (2014)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper provides a wrap-up of some of the activities undertaken by SMOS L1 team to fine tune the instrument calibration and modeling that eventually has resulted into a SMOS full-polarimetric measurement and image ... -
Radiometric performance of SMOS full polarimetric imaging
Wu, Lin; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Durán Martínez, Israel; Vall-Llossera Ferran, Mercedes Magdalena; Camps, Adiano; Delwart, Steven; Martín Neira, Manuel (2013-11)
Article
Accés restringit per política de l'editorialThis work has been conducted in the framework of several projects devoted to assess the performance of the Soil Moisture and Ocean Salinity (SMOS) mission full-pol measurement mode. Since its launch in November 2009, SMOS ... -
Refining the methodology to correct the faraday rotation angle from SMOS measurements
Rubino, Roselena; Duffo Ubeda, Núria; González Gambau, Verónica; Corbella Sanahuja, Ignasi; Durán Martínez, Israel; Torres Torres, Francisco; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2019)
Text en actes de congrés
Accés restringit per política de l'editorialIn this work, a refined methodology to correct the Faraday Rotation angle (FRA) for the SMOS mission is proposed. The method is based on calculating the FRA using the SMOS full-pol radiometric data to obtain VTEC maps ... -
Residual calibration error impact on SMOS SLL performance
Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Durán Martínez, Israel; Lin, Wu; Duffo Ubeda, Núria; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialSMOS Side Lobe Level (SLL), which is caused by the limited coverage of the measured visibility samples in the frequency domain, is responsible for non-negligible radiometric errors at pixels placed close to large brightness ... -
SMOS Flight external calibration and monitoring
Durán Martínez, Israel (Universitat Politècnica de Catalunya, 2010-07)
Projecte/Treball Final de Carrera
Accés obertThis project has been devoted to develop several tools to assess in-flight performance of the MIRAS SMOS amplitude calibration. It has been mainly focused to analyze the performance of current internal calibration by ... -
SMOS image reconstruction quality assessment
Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Wu, Lin; Duffo Ubeda, Núria; Durán Martínez, Israel; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialAfter more than four years of operation, the SMOS (Soil Moisture and Ocean Salinity) European Space Agency (ESA) mission [1] has proven to be highly useful for a variety of scientific applications related to soil moisture ... -
SMOS instrument performance after more than 8 years in orbit and lessons learnt for future L-band missions
Martín Neira, Manuel; Oliva Balagué, Roger; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Durán Martínez, Israel; Kainulainen, Juha; Closa Soteras, Josep; Zurita Campos, Alberto Manuel; Cabot, François; Khazaal, Ali; Anterrieu, E.; Barbosa, José; Tenerelli, Joseph; Díez, Raúl; Turiel, Antonio; González Gambau, Verónica (Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés restringit per política de l'editorial -
SMOS instrument performance and calibration after 6 years in orbit
Martín Neira, Manuel; Oliva, Roger; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Durán Martínez, Israel; Kainulainen, Juha; Closa, Josep; Zurita Campos, Alberto Manuel; Cabot, François; Khazaal, Ali; Anterrieu, E.; Barbosa, José; Tenerelli, Joseph (Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés obertESA’s Soil Moisture and Ocean Salinity (SMOS) mission has been in orbit for over 6 years, and its Microwave Imaging Radiometer with Aperture Synthesis (MIRAS) in two dimensions keeps working well. The data for almost this ... -
SMOS instrument performance and calibration after six years in orbit
Martín Neira, Manuel; Oliva, Roger; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Durán Martínez, Israel; Torres Torres, Francisco; Kainulainen, Juha; Closa, Josep; Zurita Campos, Alberto Manuel; Cabot, François; Khazaal, Ali; Anterrieu, E.; Barbosa, José; Tenerelli, Joseph; Turiel, Antonio; Delwart, Steven (2016-07-01)
Article
Accés obertESA's Soil Moisture and Ocean Salinity (SMOS) mission, launched 2-Nov-2009, has been in orbit for over 6 years, and its Microwave Imaging Radiometer with Aperture Synthesis (MIRAS) in two dimensions keeps working well. The ...