Exploració per tema "MIRAS"
Ara es mostren els items 1-14 de 14
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Calculation of Faraday Rotation Angle from SMOS Radiometric Data
(Universitat Politècnica de Catalunya, 2022-07-04)
Treball Final de Grau
Accés obertThe Faraday Rotation (FR) consists of a rotation in the components of the electromagnetic field emitted by the Earth as it propagates through the ionosphere. It depends on the frequency, the geomagnetic field, and the ... -
Calibration Validation and Polarimetry in 2D Aperture Synthesis. Application to MIRAS
(Universitat Politècnica de Catalunya, 2005-06-30)
Tesi
Accés obertLa missió SMOS de l'Agència Europea de l'Espai (ESA) té com a objectiu mesurar la humitat del sòl i la salinitat dels oceans, paràmetres fonamentals per tal d'entendre el canvi climàtic global.<br/>MIRAS (Radiòmetre de ... -
Correlation denormalization in interferometric or polarametric radiometers: a unified approach
(IEEE, 2009-02)
Article
Accés obertThis paper presents a general analysis of correlation measurements in an interferometer or a radiometer based on noise injection and/or switching and measurement of normalized correlations (e.g., imaging synthetic aperture ... -
Latitudinal and seasonal SMOS amplitude calibration assessment
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialThe consistency of MIRAS amplitude calibration along the mission is a key issue to ensure a stable and accurate long-term dataset of ESA's SMOS soil moisture and ocean salinity data. Recent studies have revealed latitudinal ... -
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 ... -
Phase error assessment of MIRAS/SMOS by means of redundant space calibration method
(Universitat Politècnica de Catalunya, 2011-01-12)
Projecte/Treball Final de Carrera
Accés obertCatalà: L'objectiu del projecte és estudiar l'error de fase de la càrrega d'SMOS, l'instrument MIRAS, desenvolupant un mètode anomenat Calibració per Espais Redundants (RSC). Aquest mètode està basat en l'ús de les mostres ... -
Radiometric sensitivity computation in aperture synthesis interferometric radiometry
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-03-01)
Article
Accés obertThis paper is concerned with the radiometric sensitivity computation of an aperture synthesis interferometric radiometer devoted to Earth observation. The impact of system parameters and the use of simultaneous redundant ... -
Radiometric Sensitivity Computation in Aperture Synthesis Interferometric Radiometry
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-03-31)
Article
Accés obertThis paper is concerned with the radiometric sensitivity computation of an aperture synthesis interferometric radiometer devoted to Earth observation. The impact of system parameters and the use of simultaneous redundant ... -
RF interference analisys in aperture synthesis interferometric radiometers: Application to L-band MIRAS instrument
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-03-31)
Article
Accés obertCurrent spaceborne radiometers do not achieve the required spatial resolution demanded by the scientific community due to antenna-size technological limitations. In recent years, several space agencies have been studying ... -
Sea state effect on the sea surface emissivity at L-band
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2003-10-31)
Article
Accés obertIn May 1999, the European Space Agency (ESA) selected the Earth Explorer Opportunity Soil Moisture and Ocean Salinity (SMOS) mission to obtain global and frequent soil moisture and ocean salinity maps. SMOS' single payload ... -
Sistema mecànic de posicionament dels miralls de transport de la línia del Sincrotró
(Universitat Politècnica de Catalunya, 2015-10-23)
Treball Final de Grau
Accés obert
Realitzat a/amb: Sincrotró ALBAActualment la tècnica MIRAS (Microespectroscòpia Infraroja amb Radiació Sincrotró) és una de les més utilitzades en els àmbits de biologia i biomedicina, anàlisi forense i industrial, arqueometria i patrimoni cultural, en ... -
Some results on SMOS-MIRAS calibration and Imaging
(2010)
Text en actes de congrés
Accés obertThe performance requirements of the SMOS payload are demanding in terms of spatial resolution, accuracy, stability and precision, all critical to fulfill its scientific objectives. For this reason a commissioning ... -
Technology developments for an advanced L-band radiometer mission
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Comunicació de congrés
Accés obertESA’s Soil Moisture and Ocean Salinity (SMOS) mission was launched 2 Nov 2009 and, to date, is still in good health, providing valuable L-band observations of the Earth surface [1]. A number of products are obtained from ... -
Towards a SMOS operational mission: SMOSOps-Hexagonal
(Institute of Electrical and Electronics Engineers (IEEE), 2013-06-03)
Article
Accés restringit per política de l'editorialThe Microwave Imaging Radiometer with Aperture Synthesis (MIRAS) on-board the Soil Moisture and Ocean Salinity (SMOS) mission is providing useful data since November 2009, and proving the potential of 2D interferometry ...
