Exploració per autor "Camps Carmona, Adriano José"
Ara es mostren els items 161-180 de 492
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Effect of electron number densities on the radio signal propagation in an inductively coupled plasma facility
(2023-11)
Article
Accés obertSpacecraft entering a planetary atmosphere are surrounded by a plasma layer containing high levels of ionization, due to the extreme temperatures in the shock layer. The high electron number densities cause attenuation of ... -
Effects of differential oscillator phase noise in precoding performance
(2019)
Text en actes de congrés
Accés restringit per política de l'editorialSatellite Precoding is a promising technique to meet the target data rates of the future high throughput satellite systems and the costs per bit as required by 5G applications and networks, but it requires strict synchronization ... -
Efficient onboard band selection algorithm for hyperspectral imagery in SmallSat missions with limited downlink capabilities
(Institute of Electrical and Electronics Engineers (IEEE), 2024-04-09)
Article
Accés obertHyperspectral imaging is a key tool in numerous remote sensing applications. Images with tens or even hundreds of spectral bands contain a wealth of information to retrieve multiple geophysical parameters, to perform target ... -
Empirical results of a surface-level GNSS-R experiment in a wave channel
(2015-06-01)
Article
Accés obertThe scattering of GNSS signals over a water surface is studied when the receiver is at a low height, as in GNSS-R coastal altimetry. The precise determination of the local sea level and wave state from the coast will provide ... -
End-to-end Simulator of 2-D Interferometric Radiometry
(AMER GEOPHYSICAL UNION, 2003-07-31)
Article
Accés obertAn end-to-end simulator for the assessment of the performances of a spaceborne interferometric radiometer measuring the brightness temperature of Earth’s surface (ground and sea) is presented. The tool covers the complete ... -
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 Significant Wave Height using the features of cygnss Delay Doppler Map
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Text en actes de congrés
Accés obertSignificant Wave Height (SWH) is a key parameter to characterize waves, which is typically used in sea state monitoring such as wave forecast to ensure ocean navigation safety. Satellite radar altimeter is probably the ... -
Evaluation of LoRa for data retrieval of ocean monitoring sensors with LEO satellites
(2020)
Text en actes de congrés
Accés restringit per política de l'editorialThe celebration of the International Polar Year in 2007 remarked the necessity to better monitor the polar regions. Moreover, the H2020 “Operational Network of Individual Observation Nodes” (ONION) project analyzed and ... -
Evaluation of MIRAS space borne instrument performance: snap shot radiometric accuracy and its improvement by means of pixel averaging
(1997)
Text en actes de congrés
Accés obert -
Evolution of PAU/PARIS End-to-end performance simulator (P2EPS) towards GNSS reflectometry, radio occulation and scatterometry simulator (GEROS-SIM)
(2015)
Comunicació de congrés
Accés restringit per política de l'editorialThis work shows a state-of-the-art GNSS reflectometry endto-end performance simulator, selected for the ESA’s GNSS rEflectometry, Radio Occultation and Scatterometry onboard International Space Station (GEROS-ISS). For ... -
Experimental evaluation of GNSS-reflectometry altimetric precision using the P(Y) and C/A signals
(2014-05-01)
Article
Accés restringit per política de l'editorialThis work describes a novel dual-band Global Navigation Satellite Systems Reflectometer (GNSS-R) that uses the P(Y) and C/A signals scattered over the sea surface to perform highly precise altimetric measurements. The ... -
Experimental evidence of swell signatures in airborne L5/E5a GNSS-reflectometry
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-29)
Article
Accés obertAs compared to GPS L1C/A signals, L5/E5a Global Navigation Satellite System-Reflectometry (GNSS-R) improves the spatial resolution due to the narrower auto-correlation function. Furthermore, the larger transmitted power ... -
Experimental measurements of radio signal attenuation and Faraday rotation in an inductively coupled plasma facility
(Karman Institute for Fluid Dynamics, 2023)
Text en actes de congrés
Accés obertSpacecraft entering a planetary atmosphere are surrounded by a plasma layer containing high levels of ionization due to the high temperatures on the shock layer. The high electron number densities cause attenuation and ... -
Experimental study on the performance of RFI detection algorithms in microwave radiometry: Toward an optimum combined test
(Institute of Electrical and Electronics Engineers (IEEE), 2013-10)
Article
Accés restringit per política de l'editorialRadio-frequency interference (RFI) is probably today's most serious limitation to the accurate retrieval of geophysical parameters from microwave radiometric measurements. Strong RFI inducing a change in the detected power ... -
Experimental validation of radiometric sensitivity in correlation radiometers
(IEE-INST ELEC ENG, 1998-12-31)
Article
Accés obertThe prediction of the radiometric sensitivity of correlation radiometers based on the system parameters requires knowledge of the standard deviation of each measurement due to the finite integration time. Theoretical ... -
Extension of kirchhoff method under stationary phase approximation to determination of polarimetric thermal emission from the sea
(Institution of Electrical Engineers, 1998-07)
Article
Accés obertWind direction over the sea can be determined from radiometric measurements of the third Stokes parameter (T/sub U/). The Kirchhoff method is extended under the stationary phase approximation to compute the dependence of ... -
Extension of Kirchhoff method under stationary phase approximation to determination of polarimetric thermal emission from the sea
(IEE-INST ELEC ENG, 1998-07-31)
Article
Accés obertWind direction over the sea can be determined from radiometric measurements of the third Stokes parameter (TU). The Kirchhoff method is extended under the stationary phase approximation to compute the dependence of TU on ... -
Extension of the clean technique to the microwave imaging of continuous thermal sources by means of aperture synthesis radiometers
(1998-01)
Article
Accés restringit per política de l'editorial -
Feasibility of nano-satellites constellation for AIS decoding and fire detection
(2016)
Text en actes de congrés
Accés restringit per política de l'editorial -
Feasibility of precise navigation in high and low latitude regions under scintillation conditions
(2018-02-06)
Article
Accés obertScintillation is one of the most challenging problems in Global Navigation Satellite Systems (GNSS) navigation. This phenomenon appears when the radio signal passes through ionospheric irregularities. These irregularities ...
