Results 101 to 110 of about 2,048 (223)
Gaps analysis and requirements specification for the evolution of Copernicus system for polar regions monitoring: addressing the challenges in the horizon 2020-2030 [PDF]
, 2018 This work was developed as part of the European H2020 ONION (Operational Network of Individual Observation Nodes) project, aiming at identifying the technological opportunity areas to complement the Copernicus space infrastructure in the horizon 2020 ...
Camps Carmona, Adriano José +6 more
core +2 more sources
Sea target detection using spaceborne GNSS-R delay-doppler maps: theory and experimental proof of concept using TDS-1 data [PDF]
, 2017 © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Camps Carmona, Adriano José +3 more
core +2 more sources
Estimating Backward Scattering Using GNSS-Reflectometry Measurements for Soil Moisture Retrieval
IEEE AccessSoil Moisture (SM) is a key geophysical variable that enables a better understanding of the Earth’s hydrological processes. Missions like Soil Moisture Ocean Salinity (SMOS) and Soil Moisture Active Passive (SMAP) have been the primary sources of ...
Adrian Perez-Portero +4 more
doaj +1 more source
Spaceborne Receiver Design For Scatterometric GNSS Reflectometry.
, 2012 Global Navigation Satellite System-Reflectometry (GNSS-R) is an innovative technique for remote sensing. It uses reflected signals from the navigation constellations to determine properties of the Earth’s surface. The primary focus of this work is the remote sensing of the ocean by measurement of surface roughness.
openaire +3 more sources
Ocean Remote Sensing Using Spaceborne GNSS-Reflectometry: A Review
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingSpaceborne global navigation satellite system reflectometry (GNSS-R) is an emerging remote sensing technology that utilizes Earth surface reflections of GNSS signals to monitor geophysical parameters.
Jinwei Bu +6 more
doaj +1 more source
Sensors, 2015 Global Navigation Satellite Systems (GNSS) broadcast signals for positioning and navigation, which can be also employed for remote sensing applications.
Micaela Troglia Gamba +5 more
doaj +1 more source
GNSS reflectometry for land remote sensing applications
, 2023 Soil moisture and vegetation biomass are two essential parameters from a scienti c and economical point of view. On one hand, they are key for the understanding of the hydrological and carbon cycle. On the other hand, soil moisture is essential for agricultural applications and water management, and vegetation biomass is crucial for regional ...
openaire +4 more sources
Optimization of Random Surface Scattering Models for RR Polarization in SoOp-R/GNSS-R Applications
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingPolarization in global navigation satellite system-reflectometry (GNSS-R) or signal of opportunity-reflectometry (SoOP-R) is commonly used for retrieving geophysical parameters.
Xuerui Wu, Lixiong Chen, Jiancheng Shi
doaj +1 more source
Considerations for Coherent Integration in Spaceborne GNSS-Reflectometry
IEEE Geoscience and Remote Sensing LettersThe fundamental observable in Global Navigation Satellite System Reflectometry (GNSS-R) is the so-called DelayDoppler Map (DDM), which is derived from the cross-correlation of the reflected signal with either the direct signal or a locally generated replica of the transmitted signal as implemented in our algorithm.
Yasir M. O. Abbas +4 more
openaire +1 more source
Remote SensingThe Soil Moisture Active–Passive (SMAP) mission has greatly contributed to the use of remote sensing technologies for monitoring the Earth’s land surface and estimating geophysical parameters that influence the climate system.
Johanna Garcia-Cardona +4 more
doaj +1 more source