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Toward estimation of seasonal water dynamics of winter wheat from ground-based L-band radiometry: a concept study
(2022-04-28)
Article
Open AccessThe 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) ... -
Vegetation canopy height retrieval using L1 and L5 airborne GNSS-R
(Institute of Electrical and Electronics Engineers (IEEE), 2021-11-29)
Article
Open AccessVegetation 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 ... -
Error propagation in microwave soil moisture and vegetation optical depth retrievals
(2021-01-01)
Article
Open AccessSatellite 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. ... -
Validation of SMOS L3 and L4 soil moisture products in the REMEDHUS (Spain) and CEMADEN (brazil) networks
(2020-01-01)
Article
Open AccessThis 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
Open AccessAt 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
Open AccessThis 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 ... -
Advanced GNSS-R signals processing with GPUs
(Institute of Electrical and Electronics Engineers (IEEE), 2020-01-01)
Article
Open AccessGlobal navigation satellite system reflectometry (GNSS-R) is a group of techniques that uses satellite navigation signals as signals of opportunity for remote sensing applications. In GNSS-R, large amounts of data are ... -
Untangling the incoherent and coherent scattering components in GNSS-R and novel applications
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-04-09)
Article
Open AccessAs opposed to monostatic radars where incoherent backscattering dominates, in bistatic radars, such as Global Navigation Satellite Systems Reflectometry (GNSS-R), the forward scattered signals exhibit both an incoherent ... -
Experimental evidence of swell signatures in airborne L5/E5a GNSS-reflectometry
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-29)
Article
Open AccessAs 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 ... -
Detecting Targets above the Earth's Surface Using GNSS-R Delay Doppler Maps: Results from TDS-1
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-10-07)
Article
Open Access: Global Navigation Satellite System (GNSS) reflected signals can be used to remotely sense the Earth’s surface, known as GNSS reflectometry (GNSS-R). The GNSS-R technique has been applied to numerous areas, such as the ... -
Satellite cross-talk impact analysis in airborne interferometric global navigation satellite system-reflectometry with the microwave interferometric reflectometer
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-05-01)
Article
Open AccessThis work analyzes the satellite cross-talk observed by the microwave interferometric reflectometer (MIR), a new global navigation satellite system (GNSS) reflectometer, during an airborne field campaign in Victoria and ... -
The global navigation satellite systems reflectometry (GNSS-R) microwave interferometric reflectometer: hardware, calibration, and validation experiments
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-02-27)
Article
Open AccessThis manuscript describes the Microwave Interferometric Reflectometer (MIR) instrument, a multi-beam dual-band GNSS-Reflectometer with beam-steering capabilities built to assess the performance of a PAssive Reflectrometry ...
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