Results 131 to 140 of about 11,603,365 (342)

First Use of GPS Satellites for Beam Calibration of Radio Telescopes [PDF]

open access: yesarXiv
We present results from the first application of the Global Navigation Satellite System (GNSS; GPS is one example of a collection of satellites in GNSS) for radio beam calibration using a commercial GNSS receiver with the Deep Dish Development Array (D3A) at the Dominion Radio Astrophysical Observatory (DRAO).
arxiv  

Ionospheric Disturbances in GNSS TEC Data: SpaceX Falcon 9 Deorbit Maneuvers Over CONUS in April–May 2024

open access: yesGeophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract Traveling ionospheric disturbances (TIDs) driven by a large number of internal and external sources are detectable with dense networks of ground‐based Global Navigation Satellite System (GNSS) receivers' measurements of total electron content (TEC).
P. A. Inchin   +6 more
wiley   +1 more source

Evoluzione del GNSS ed i nuovi mercati

open access: yesGEOmedia, 2017
GNSS systems have undergone over the last 15 years a fundamental shift from systems used primarily for military and professional applications to public use infrastructure for many types of mass-market applications.
Mirko Antonini
doaj   +2 more sources

MULTIBAND PROBE-FED STACKED PATCH ANTENNA FOR GNSS APPLICATIONS [PDF]

open access: bronze, 2014
Zeheng Lai   +4 more
openalex   +1 more source

Grounding Line Remote Operated Vehicle (GROV) Survey of the Ice Shelf Cavity of Petermann Glacier, Greenland

open access: yesGeophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract The melting of glaciers by ocean waters along the ice sheet periphery is a major physical process driving glacier evolution in a changing climate. Using a fiber‐optic‐tethered Grounding line Remote Operated Vehicle, we explore the ice shelf cavity of Petermann Glacier, in Northwestern Greenland, with an interferometric multibeam sonar ...
E. Rignot   +4 more
wiley   +1 more source

Remote Sensing of Discharge Ratios at River Channel Bifurcations

open access: yesGeophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract River channel bifurcations are crucial for distributing water and sediment on floodplains and deltas, but estimating discharge ratios between branches remains challenging. Using satellite imagery and in‐situ discharge data, we demonstrate that bifurcate channel widths can estimate discharge ratios at 23 of 27 bifurcations in 11 rivers ...
Bo Wang, Laurence C. Smith
wiley   +1 more source

Application of Least Squares with Conditional Equations Method for Railway Track Inventory Using GNSS Observations [PDF]

open access: gold, 2020
Krzysztof Czaplewski   +14 more
openalex   +1 more source

The First Near‐Real‐Time Compatible Numerical Method for Co‐Seismic Ionospheric Disturbances Simulation

open access: yesGeophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract Numerous studies demonstrated a huge potential for ionospheric total electron content (TEC) measurements to be included in earthquake and tsunami risk assessments. However, up to now, only a few methodologies or tools can be used in near‐real‐time (NRT) for these purposes.
S. A. Sanchez   +3 more
wiley   +1 more source

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