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Snow and ice thickness retrievals using GNSS-R: Preliminary results of the mosaic experiment
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-12-02)
Article
Open AccessThe FSSCat mission was the 2017 ESA Sentinel Small Satellite (S^3) Challenge winner and the Copernicus Masters competition overall winner. It was successfully launched on 3 September 2020 onboard the VEGA SSMS PoC (VV16). ... -
Estimation of polar depletion regions by VTEC contrast and watershed enhancing
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Article
Open AccessThis article presents a method for determining near-Pole ionization depletion regions and troughs from global navigation satellite system (GNSS) vertical total electron content (VTEC) maps. To define the regions, we use ... -
A model-free four component scattering power decomposition for polarimetric SAR data
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Article
Open AccessTarget decomposition methods of polarimetric Synthetic Aperture Radar (PolSAR) data explain scattering information from a target. In this regard, several conventional model-based methods utilize scattering power components ... -
Optical power budget enhancement in 50-90 Gb/s IM-DD PONs with NOMA-CAP and SOA-Based amplification
(2020-05-15)
Article
Open AccessWe report experimental results of a semiconductor optical amplifier (SOA) for optical amplification in a 50-90 Gb/s IM-DD optical access system using non-orthogonal multiple access multiplexing combined with multi-band ... -
Estimation of vegetation structure parameters from SMAP radar intensity observations
(Institute of Electrical and Electronics Engineers (IEEE), 2021-01-01)
Article
Open AccessIn this article, we present a multipolarimetric estimation approach for two model-based vegetation structure parameters (shape A and orientation distribution ψ of the main canopy elements). The approach is based on a reduced ... -
Frequency domain analysis and filtering of business and consumer survey expectations
(Elsevier, 2021-08)
Article
Restricted access - publisher's policyThe main objective of this study is two-fold. First, we aim to detect the underlying existing periodicities in business and consumer survey expectations by means of spectral analysis. We use the Welch method to extract the ... -
Coastline detection based on Sentinel-1 time series for ship- and flood-monitoring applications
(2020)
Article
Open AccessThis letter addresses the use of the Sentinel-1 time series with the aim of proposing an automatic and unsupervised coastline detection method that averages the dynamical variations of coastal areas over a limited period ... -
From bilingual to multilingual neural-based machine translation by incremental training
(2020-08-02)
Article
Open AccessA common intermediate language representation in neural machine translation can be used to extend bilingual systems by incremental training. We propose a new architecture based on introducing an interlingual loss as an ... -
A remote carrier synchronization technique for coherent distributed remote sensing systems
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Article
Open AccessPhase, frequency, and time synchronization are crucial requirements for many applications, such as multistatic remote sensing and communication systems. Moreover, the synchronization solution becomes even more challenging ... -
Analysis of blocking in mmWave cellular systems: application to relay positioning
(2021-02)
Article
Open AccessWithin the framework of 5G, blockage effects occurring in the mmWave band are critical. Previous works describe the effects of blockages in isolated and multiple links for simple blocking objects, modeled with mathematical ... -
Analytical computation of the spatial resolution in GNSS-R and experimental validation at L1 and L5
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-11-28)
Article
Open AccessGlobal navigation satellite systems reflectometry (GNSS-R) is a relatively novel remote sensing technique, but it can be understood as a multi-static radar using satellite navigation signals as signals of opportunity. The ... -
Multi-user precoder designs for RGB visible light communication systems
(2020-11-29)
Article
Open AccessIn this paper, we design linear precoders for the downlink of a visible light communication (VLC) system that simultaneously serves multiple users. Instead of using phosphor-coated white light-emitting diodes (PWLEDs), we ...
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