CTE-CRAE - Grup de Recerca en Ciències i Tecnologies de l'Espai: Enviaments recents
Ara es mostren els items 1-12 de 149
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Retrieving forest vegetation moisture content from a multi-sensor approach in the Western United States
(2022-06-21)
Report de recerca
Accés restringit per política de l'editorial -
Toward estimation of seasonal water dynamics of winter wheat from ground-based L-band radiometry: a concept study
(2022-04-28)
Article
Accés obertThe vegetation optical depth (VOD) variable contains information on plant water content and biomass. It can be estimated alongside soil moisture from currently operating satellite radiometer missions, such as SMOS (ESA) ... -
Monitoring forest above-ground biomass from multifrequency vegetation optical depth: a preliminary study
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Text en actes de congrés
Accés obertVegetation Optical Depth (VOD) is highly sensitive to Above-ground Biomass (AGB), particularly at L-band, as this band is more sensitive to the canopy layer and has greater ca pacity to penetrate the vegetation. However, ... -
Parameter considerations for the retrieval of surface soil moisture from spaceborne GNSS-R
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Text en actes de congrés
Accés obertThe Microwave Interferometric Reflectometer (MIR) is an airborne GNSS-R instrument developed by Universitat Politècnica de Catalunya. In 2018, it was flown twice over the agricultural Yanco area, New South Wales, Australia, ... -
Vegetation canopy height retrieval using L1 and L5 airborne GNSS-R
(Institute of Electrical and Electronics Engineers (IEEE), 2021-11-29)
Article
Accés obertVegetation canopy height (CH) is one of the important remote-sensing parameters related to forests’ structure, and it can be related to the biomass and the carbon stock. Global navigation satellite system-reflectometry ... -
Untangling the GNSS-R coherent and incoherent components: Experimental evidences over the ocean
(2020)
Text en actes de congrés
Accés obertGlobal Navigation Satellite Systems Reflected (GNSS-R) signals exhibit an incoherent and a coherent components [1], [2]. Current models assume that one or the other are dominant, and the calibration, and geophysical parameter ... -
First experimental evidence of wind and swell signatures in L5 GPS and E5A Galileo GNSS-R waveforms
(2020)
Text en actes de congrés
Accés obertAs compared to the using L1C/A signals, L5/E5a Global Navigation Satellite System - Reflectometry (GNSS-R), gives improved resolution over the Earth's surface due to the sharper auto-correlation function. Furthermore, the ... -
Error propagation in microwave soil moisture and vegetation optical depth retrievals
(2021-01-01)
Article
Accés obertSatellite soil moisture and vegetation optical depth [(VOD); related to the total vegetation water mass per unit area] are increasingly being used to study water relations in the soil-plant continuum across the globe. ... -
Global L-band vegetation volume fraction estimates for modeling vegetation optical depth
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Text en actes de congrés
Accés restringit per política de l'editorialThe attenuation of microwave emissions through the canopy is quantified by the vegetation optical depth (VOD), which is related to the amount of water, the biomass and the structure of vegetation. To provide microwave-derived ... -
Validation of SMOS L3 and L4 soil moisture products in the REMEDHUS (Spain) and CEMADEN (brazil) networks
(2020-01-01)
Article
Accés obertThis work analyzes the quality of the soil moisture L3 (25 km) and L4 (1 km) products generated at the Barcelona Expert Center (BEC) in two sites located in distinct semi-arid regions, where measurement networks are ... -
L-band vegetation optical depth estimation using transmitted GNSS signals: Application to GNSS-reflectometry and positioning
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-08-01)
Article
Accés obertAt L-band (1–2 GHz), and particularly in microwave radiometry (1.413 GHz), vegetation has been traditionally modeled with the τ-ω model. This model has also been used to compensate for vegetation effects in Global Navigation ... -
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 ...