Results 121 to 130 of about 4,073 (231)

GSeisRT: A Continental BDS/GNSS Point Positioning Engine for Wide-Area Seismic Monitoring in Real Time

open access: yesEngineering
Precise coseismic displacements in earthquake/tsunamic early warning are necessary to characterize earthquakes in real time in order to enable decision-makers to issue alerts for public safety.
Jianghui Geng   +8 more
doaj   +1 more source

Investigation of the Africa splitting into two as new ocean forms [PDF]

open access: yes
Scientists believe that Ethiopian tectonic plate changes indicate that Africa is breaking apart, opening the path for the emergence of the planet’s sixth ocean.
Pırtı, Atınç
core   +2 more sources

Precise point positioning with single and dual-frequency multi-GNSS android smartphones [PDF]

open access: yes, 2020
The new generation of Android smartphones is equipped with high performance Global Navigation Satellite System (GNSS) chips capable of tracking dual frequency multi-constellation data.
Baiocchi V.   +4 more
core  

Performance of PPP and PPP-RTK with new-generation GNSS constellations and signals

open access: yesSatellite Navigation
The expansion of Global Navigation Satellite Systems (GNSS) and Regional Navigation Satellite Systems (RNSS), along with broadcasting of additional signals, offers more options for Precise Point Positioning (PPP). Utilizing a number of constellations and
Xiaohong Zhang   +6 more
doaj   +1 more source

Historia genealogica de la Casa de Silva : donde se refieren las acciones mas señaladas de sus Señores, las fundaciones de sus Mayorazgos y la calidad de sus alianças matrimoniales... [PDF]

open access: yes
Copia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 2009-2010Errores de pag. en el primer vol.: de la p. 552 pasa a la 555, de la 586 retrocede a la 585, repite la 597 y folia la 598Texto con apostillas marginalesAntep ...
Llanos y Guzmán, Mateo, fl. 1682-1697   +2 more
core   +1 more source

An integer ambiguity clustering estimator for real-time precise point positioning

open access: yesGeo-spatial Information Science
Real-time precise point positioning with ambiguity resolution (PPP-AR) is considered a valuable positioning tool applicable in various fields. Limited by the precision and stability of real-time satellite products and observation streams, it is ...
Kunlun Zhang   +3 more
doaj   +1 more source

Assessment of tropospheric modeling on PPP-AR performances under brazilian atmospheric condition

open access: yesBoletim de Ciências Geodésicas, 2022
Lais Thuany Cardoso Theodoro   +3 more
openaire   +1 more source

School infrastructure procurement by Public–Private Partnership: In the public interest? [PDF]

open access: yes
The use of Public–Private Partnerships (PPPs) in the education sector to construct and maintain schools’ infrastructure is under-researched by Educational Studies specialists. This article presents an assay of the use of PPP to procure school facilities,
Benade, Leon
core   +2 more sources

Satellite Orientation Modelling with Quaternions and its Impact on Bds-3 Ppp-Ar

open access: yesMeasurement, 2023
Robert Galatiya Suya   +3 more
openaire   +1 more source

Impacts of the May 2024 Extreme Geomagnetic Storm on Global High‐Accuracy GPS Positioning Solutions

open access: yesSpace Weather
The May 2024 geomagnetic storm has been recognized as the most severe one in the past two decades and was categorized as an “extreme” (G5) event according to the NOAA space weather scales. This study applies Precise Point Positioning (PPP) software PRIDE
Zhe Yang, Y. T. Jade Morton
doaj   +1 more source

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