Results 81 to 90 of about 14,281,997 (294)
Geoscience Letters, 2020 The soil freeze/thaw processes have a significant impact on the surface energy and moisture balance, which play a key role in ecosystem diversity and productivity. The air-/space-borne Global Navigation Satellite System (GNSS)-Reflectometry (GNSS-R) is a
Xuerui Wu, Shuanggen Jin, Xinqiu Ouyang
doaj +1 more source
, 2023 Proposal for a DCAT-AP extension for GNSS observation ...
Bruyninx, Carine +6 more
core +1 more source
Remote Sensing in Ecology and Conservation, EarlyView.This study demonstrates that not just Airborne Laser Scanning, but also Sentinel‐2 can effectively estimate absolute canopy cover and canopy cover heterogeneity ‐ structural metrics that determine the subcanopy light regime, found to be linked to the vascular plant species richness in the understory of temperate mountain forests.
Felix Wieland‐Glasmann +4 more
wiley +1 more source
Applied Sciences, 2019 Signals from global navigation satellite systems (GNSS) can be utilized as signals of opportunity in remote sensing applications. Geophysical properties of the earth surface can be detected and monitored by processing the back-scattered GNSS signals from
Rayan Imam +4 more
doaj +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT Low Earth Orbit (LEO) satellite constellations offer unprecedented opportunities for global broadband connectivity but pose significant beamforming challenges due to rapid platform motion and stringent onboard hardware constraints. Fully digital architectures, while optimal in theory, remain impractical for satellite payloads, motivating ...
Mohammad Momani +2 more
wiley +1 more source
Scientia Marina, 2016 This article summarizes some of the activities in which Jordi Font, research professor and head of the Department of Physical and Technological Oceanography, Institut de Ciències del Mar (CSIC, Spanish National Research Council) in Barcelona, has been ...
Adriano Camps +21 more
doaj +1 more source
Dynamic Cell Division for Interference Management in Satellite Direct‐to‐Cell Systems
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT Direct‐to‐cell (D2C) connectivity enables future non‐terrestrial networks to provide service directly to standard terrestrial user equipment (UE) when terrestrial networks (TN) are unavailable. In this work, the satellite system is considered as a secondary network that supplements existing TN coverage while minimizing interference to the ...
Satya Chan +3 more
wiley +1 more source
Assessing the Performance of GNSS Signal Acquisition: New Signals and GPS L1 C/A Code
, 2014 International audienceThe low power and spread spectrum nature of GNSS signals make their detection and acquisition a key, but challenging aspect of receiver processing designs.
Hein, Günter +5 more
core +1 more source
Intercomparison of Tianmu-1 and CYGNSS Global Land Observations for Harmonization
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingSpaceborne global navigation satellite system-reflectometry (GNSS-R) offers a unique opportunity for low-cost, all-weather land surface monitoring. While land observations can theoretically achieve subkilometer resolution, irregular sampling and the lack
Wentao Yang +7 more
doaj +1 more source
First Evaluation of Topography on GNSS-R: An Empirical Study Based on a Digital Elevation Model
Remote Sensing, 2019 Understanding the effects of Earth’s surface topography on Global Navigation Satellite Systems Reflectometry (GNSS-R) space-borne data is important to calibrate experimental measurements, so as to provide accurate soil moisture content (SMC ...
Hugo Carreno-Luengo +2 more
doaj +1 more source