Results 41 to 50 of about 19,053 (217)

Estimating ocean tide loading displacements with GPS and GLONASS [PDF]

open access: yesSolid Earth, 2020
Ground displacements due to ocean tide loading have previously been successfully observed using Global Positioning System (GPS) data, and such estimates for the principal lunar M2 constituent have been used to infer the rheology and structure of the ...
B. Matviichuk, M. King, C. Watson
doaj   +1 more source

A turn-key Concept for active cancellation of Global Positioning System L3 Signal [PDF]

open access: yes, 2010
We present a concept, developed at the National Astronomy and Ionosphere Center (NAIC) at Arecibo, Puerto Rico, for active suppression of Global Positioning System (GPS) signals in the 305 m dish radio receiver path prior to backend processing.
Edgar, Clyde   +6 more
core   +1 more source

Monitoring GPS‐collared moose by ground versus drone approaches: efficiency and disturbance effects

open access: yesWildlife Biology, EarlyView.
Efficient wildlife management requires precise monitoring methods, for example to estimate population density, reproductive success, and survival. Here, we compared the efficiency of drone (equipped with a RGB camera) and ground approaches to detect and observe GPS‐collared female moose Alces alces and their calves. We also quantified how drone (n = 42)
Martin Mayer   +8 more
wiley   +1 more source

Optimization of an aircraft flight trajectory in the GLONASS dynamic accuracy field

open access: yesНаучный вестник МГТУ ГА, 2019
The authors consider the problem of optimization of aircraft flight trajectories in air traffic management (ATM) on the basis of flexible routing technologies which involve the use of satellite navigation systems (SNS).
O. N. Skrypnik   +3 more
doaj   +1 more source

MODERN TRENDS IN THE DEVELOPMENT OF TRANSPORT AND LOGISTICS SYSTEMS

open access: yesNauka ta progres transportu, 2020
Purpose. At the present stage, for the normal functioning of the economy, it is necessary to maintain a balance of economic interests for consumers of transport services and transport itself.
О. A. Hodoskina   +3 more
doaj   +1 more source

Análise do uso de dados GPS/GLONASS em diferentes métodos de posicionamento por satélites considerando a influência das condições ionosféricas brasileiras

open access: yesRevista Cartográfica, 2022
O GLONASS (GLObal NAvigation Satellite System) e o GPS (Global Positioning System) são os sistemas pioneiros de navegação global por satélite. A utilização combinada de dados GPS e GLONASS despertou interesse inicialmente, mas as pesquisas com ...
Gabriel Jerez   +1 more
doaj   +1 more source

Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)

open access: yesPerspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki   +5 more
wiley   +1 more source

Global Navigation Satellite Systems - Perspectives on Development and Threats to System Operation [PDF]

open access: yesTransNav, 2016
The rapid development of satellite navigation and timing technologies and the broad availability of user equipment and applications has dramatically changed the world over the last 20 years.
Krzysztof Czaplewski, Dana Goward
doaj   +1 more source

Safety arguments for next generation location aware computing [PDF]

open access: yes, 2010
Concerns over the accuracy, availability, integrity and continuity of Global Navigation Satellite Systems (GNSS) have limited the integration of GPS and GLONASS for safety-critical applications.
Holloway, C.M., Johnson, C.W.
core   +2 more sources

Relatively Intense Daytime GNSS Amplitude Scintillations at Middle Latitude Linked With Multi‐Layered Strong Es Structures

open access: yesGeophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Intense Global Navigation Satellite System (GNSS) amplitude scintillations usually occur in nighttime at low latitudes due to ionospheric plasma bubble irregularities. During daytime at middle latitudes, previous studies found that the sporadic E (Es) layer could lead to GNSS amplitude scintillations, which however, is relatively weak, for ...
Wenjie Sun   +14 more
wiley   +1 more source

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