Exploració per autor "Camps Carmona, Adriano José"
Ara es mostren els items 298-317 de 492
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Ocean salinity observations with SMOS mission
(IEEE Piscataway, 2000)
Text en actes de congrés
Accés obertThe purpose of this paper is to present the capabilities of SMOS (Soil Moisture and Ocean Salinity mission) for the global mapping of ocean salinity from space. SMOS has been selected by the European Space Agency as the ... -
Ocean surface's scattering coefficient retrieval by delay-doppler map inversion
(2011-07)
Article
Accés restringit per política de l'editorialGlobal navigation satellite system reflectometry of signals is a promising technique to remotely sense a number of Earth’s geophysical parameters, and it has been proposed for ocean monitoring applications such as mesoscale ... -
Ocean target monitoring with improved revisit time using constellations of GNSS-R instruments
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Text en actes de congrés
Accés restringit per política de l'editorialShips and ice monitoring is of key importance in numerous applications, such as maritime traffic control, prevention of illegal activities, climate change studies, and maritime security. In this work, the feasibility of ... -
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 amount of information content in microwave radiometry for wet delay estimation
(2017-07-01)
Article
Accés obertThis paper aims at determining 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 atmospheric water-vapor ... -
On the correlation between earthquakes and prior ionospheric scintillations over the ocean: a study using GNSS-R data between 2017 and 2021
(Institute of Electrical and Electronics Engineers (IEEE), 2024-01-01)
Article
Accés obertFrom 1980 to 2021, earthquakes have caused more than 846 000 casualties and about US$ 661 billion in economic losses. At present, there are no reliable earthquake precursors to generate alerts. Currently, the link between ... -
On the correlation between GNSS-R reflectivity and L-band microwave radiometry
(Institute of Electrical and Electronics Engineers (IEEE), 2016-12)
Article
Accés obertThis work compares microwave radiometry and global navigation satellite systems-reflectometry (GNSS-R) observations using data gathered from airborne flights conducted for three different soil moisture conditions. Two ... -
On the detection of RFI through the correlation anomaly at different time lags
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Text en actes de congrés
Accés obertMicrowave radiometers can be considerably affected by Radio Frequency Interference (RFI). These man-made interference conceal the underlying natural signal, preventing the retrieval of geophysical variables. Adopting ... -
On the new architecture and capabilities of the front-End GNSS interference excisor (Fenix)
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Comunicació de congrés
Accés restringit per política de l'editorialThe number of applications based on Global Navigation Satellite Systems (GNSS) has been increasing in the last years. With its proliferation, Radio-Frequency Interference (RFI) has become one of the most concerning topics ... -
On the potential of empirical mode decomposition for RFI mitigation in microwave radiometry
(Institute of Electrical and Electronics Engineers (IEEE), 2022-07-04)
Article
Accés obertRadio-frequency interference (RFI) is an increasing problem particularly for Earth observation using microwave radiometry. RFI has been observed, for example, at L-band by the European Space Agency’s (ESA’s) soil moisture ... -
On the synergy of airborne GNSS-R and landsat 8 for soil moisture estimation
(2015-08-01)
Article
Accés obertWhile the synergy between thermal, optical, and passive microwave observations is well known for the estimation of soil moisture and vegetation parameters, the use of remote sensing sources based on the Global Navigation ... -
On the synergy of SMOS and Terra/Aqua MODIS: high resolution soil moisture maps in near real-time
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialAn innovative downscaling approach to obtain fine-scale soil moisture estimates from 40 km SMOS observations has been developed. It optimally blends SMOS multi-angular and full-polarimetric information with MODIS visible/data ... -
On the trade-off between enhancement of the spatial resolution and noise amplification in conical-scanning microwave radiometers
(2022-01-01)
Article
Accés obertThe ability to enhance the spatial resolution of measurements collected by a conical-scanning microwave radiometer (MWR) is discussed in terms of noise amplification and improvement of the spatial resolution. Simulated ... -
On the use of GNSS-R data to correct L-band brightness temperatures for sea-state effects: results of the ALBATROSS field experiments
(IEEE Press. Institute of Electrical and Electronics Engineers, 2011-09)
Article
Accés restringit per política de l'editorialSea surface salinity is a key oceanographic parameter that can be measured by means of L-band microwave radiometry. The measured brightness temperatures over the ocean are influenced by the sea state, which can entirely ... -
On-board phase and modulus calibration of large aperture synthesis radiometers: study applied to miras
(Institute of Electrical and Electronics Engineers (IEEE), 1996-07)
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 ... -
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 ... -
On-ground characterization of the SMOS payload
(IEEE Press. Institute of Electrical and Electronics Engineers, 2009-09)
Article
Accés obertThe on-ground characterization of the synthetic aperture radiometer onboard the Soil Moisture and Ocean Salinity mission is described. Characterization includes basic functionality, internal calibration, thermal cycling, ... -
Optimization and performance analysis of interferometric GNSS-R altimeters: application to the PARIS IoD mission
(2014-05-01)
Article
Accés restringit per política de l'editorialReflectometry using Global Navigation Satellite System's signals (GNSS-R) of opportunity was originally conceived in the early 1990 s for mesoscale altimetry, and since then, many studies have shown its applicability to ... -
Optimized model-based design space exploration of distributed multi-orbit multi-platform Earth observation spacecraft architectures
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés restringit per política de l'editorialSatellite architectures where networked, heterogeneous observation nodes capture data in a distributed manner are seen as feasible solutions to address the needs of next-generation Earth observation services (i.e. higher ... -
Optimum intercalibration time in synthetic aperture interferometric radiometers: application to SMOS
(2012)
Article
Accés restringit per política de l'editorialInterpolation strategies for calibration of the Soil Moisture and Ocean Salinity (SMOS) mission of the European Space Agency are tested and compared. Calibration strategy (how and how often) is critical in achieving the ...
