Results 91 to 100 of about 38,307 (204)

Learning from Galileo's errors [PDF]

open access: yesJ. Br. Astron. Assoc . 122, 3, 2012, 169-172, 2012
Four hundred years after its publication, Galileo's masterpiece Sidereus Nuncius is still a mine of useful information for historians of science and astronomy. In his short book Galileo reports a large amount of data that, despite its age, has not yet been fully explored.
arxiv  

Simulation of Nequick Parameters of Galileo Satellite Navigation System

open access: hybrid, 2012
Jie XIE   +4 more
openalex   +1 more source

Orbit and clock products for quad-system satellites with undifferenced ambiguity fixing approach

open access: yesSatellite Navigation
Integer Ambiguity Resolution (IAR) can significantly improve the accuracy of GNSS Precise Orbit Determination (POD). Traditionally, the IAR in POD is achieved at the Double Differenced (DD) level.
Jiaqi Wu   +6 more
doaj   +1 more source

Consistency of MGEX Orbit and Clock Products

open access: yesEngineering, 2020
The analysis centers of the Multi-GNSS Pilot Project of the International GNSS Service provide orbit and clock products for the global navigation satellite systems (GNSSs) Global Positioning System (GPS), GLONASS, Galileo, and BeiDou, as well as for the ...
Peter Steigenberger, Oliver Montenbruck
doaj  

Leveraging LSTM for Predictive Modeling of Satellite Clock Bias [PDF]

open access: yesarXiv
Satellite clock bias prediction plays a crucial role in enhancing the accuracy of satellite navigation systems. In this paper, we propose an approach utilizing Long Short-Term Memory (LSTM) networks to predict satellite clock bias. We gather data from the PRN 8 satellite of the Galileo and preprocess it to obtain a single difference sequence, crucial ...
arxiv  

Nuovi orizzonti nel controllo del traffico aereo ENAV affronta la sfida satellitare

open access: yesGEOmedia, 2008
New horizons in flight control management: ENAV faces GNSS ENAV – the italian company for air navigation services – is operating on various satellite projects dedicated to flight traffic management, together with other european providers, to resolve ...
Giovanni Del Duca
doaj  

Improving Galileo OSNMA Time To First Authenticated Fix [PDF]

open access: yesarXiv
Galileo is the first global navigation satellite system to authenticate their civilian signals through the Open Service Galileo Message Authentication (OSNMA) protocol. However, OSNMA delays the time to obtain a first position and time fix, the Time To First Authentication Fix (TTFAF).
arxiv  

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