Results 51 to 60 of about 23,654,929 (387)

Global Navigation Satellite System‐based positioning technology for structural health monitoring: a review

open access: yesStructural Control & Health Monitoring, 2019
Global Navigation Satellite System (GNSS) positioning technology has had widespread applications in the structural health monitoring as its overall performance has improved significantly in the last two decades.
Jiayong Yu   +5 more
semanticscholar   +1 more source

Tracking systems for satellite communications

open access: yesIEE Proceedings F Communications, Radar and Signal Processing, 1988
Satellites in nominally geostationary orbits possess diurnal motion which causes the apparent position of the spacecraft to wander in the sky as seen by an earth station. If uncompensated this causes a variation in the performance of the communications link. The motion of the satellite therefore has to be tracked by the earth station antenna.
Hawkins, GJ, Edwards, DJ, McGeehan, JP
openaire   +4 more sources

Consistency and Stability of SNPP ATMS Microwave Observations and COSMIC-2 Radio Occultation over Oceans

open access: yesRemote Sensing, 2021
Radio occultation (RO) sensor measurements have critical roles in numerical weather prediction (NWP) by complementing microwave and infrared sounder measurements with information of the atmospheric profiles at high accuracy, precision, and vertical ...
Xi Shao   +4 more
doaj   +1 more source

A Review of Global Navigation Satellite System (GNSS)-Based Dynamic Monitoring Technologies for Structural Health Monitoring

open access: yesRemote Sensing, 2019
In the past few decades, global navigation satellite system (GNSS) technology has been widely used in structural health monitoring (SHM), and the monitoring mode has evolved from long-term deformation monitoring to dynamic monitoring. This paper gives an
Nan Shen   +6 more
semanticscholar   +1 more source

Spire RO Thermal Profiles for Climate Studies: Initial Comparisons of the Measurements from Spire, NOAA-20 ATMS, Radiosonde, and COSMIC-2

open access: yesRemote Sensing, 2023
Global Navigation Satellite System (GNSS) Radio Occultation (RO) data play an essential role in improving numerical weather prediction (NWP) and monitoring climate change.
Xin Jing   +5 more
doaj   +1 more source

The velocity anisotropy of the Milky Way satellite system [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2018
We analyse the orbital kinematics of the Milky Way (MW) satellite system utilizing the latest systemic proper motions for 38 satellites based on data from Gaia Data Release 2.
A. Riley   +11 more
semanticscholar   +1 more source

Wetland monitoring with Global Navigation Satellite System reflectometry. [PDF]

open access: yesEarth Space Sci, 2017
Information about wetland dynamics remains a major missing gap in characterizing, understanding, and projecting changes in atmospheric methane and terrestrial water storage.
Nghiem SV   +9 more
europepmc   +2 more sources

Culture conditions influence satellite cell activation and survival of single myofibers [PDF]

open access: yes, 2018
Single myofiber isolation protocols allow to obtain an in vitro system in which the physical association between the myofiber and its stem cells, the satellite cells, is adequately preserved.
Adamo, Sergio   +5 more
core   +2 more sources

Modeling and Assessment of Precise Time Transfer by Using BeiDou Navigation Satellite System Triple-Frequency Signals. [PDF]

open access: yesSensors (Basel), 2018
This study proposes two models for precise time transfer using the BeiDou Navigation Satellite System triple-frequency signals: ionosphere-free (IF) combined precise point positioning (PPP) model with two dual-frequency combinations (IF-PPP1) and ...
Tu R, Zhang P, Zhang R, Liu J, Lu X.
europepmc   +2 more sources

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