Results 31 to 40 of about 3,334 (205)
Distribution of clock correction and ephemeris parameters in broadcast navigation messages [PDF]
GPS Solutions, 2021 AbstractThe distribution of clock correction and ephemeris (CCE) parameters in navigation messages broadcast by operational satellite vehicles (SVs) of the Global Navigation Satellite System (GNSS) is studied. For this purpose, two evaluation metrics are proposed, namely atypical navigation message structures and time to complete CCE sets (TTCS).
Ivan Lapin +4 more
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Galileo broadcast ephemeris and clock errors, and observed fault probabilities for ARAIM [PDF]
, 2023 (English) The characterization of Clock and Ephemeris error of the Global Navigation Satellite Systems is a key element to validate the assumptions for the integrity analysis of GNSS Safety of Life (SoL) applications. Specifically, the performance metrics of SoL applications require the characterization of the nominal User Range Errors (UREs) as well ...
María Teresa Alonso Alonso
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The Carrier Phase Time Transfer with Broadcast Ephemeris
Journal of Physics: Conference Series, 2019 Abstract Time transfer method PPP is restricted by the real-time and precision of IGS production, and the real-time application have not been widely implemented. Standard Point Positioning(SPP) can satisfy the application for the real-time customer, but the precision is low and is not satisfy the high precision customer.
Xianglei Wang +3 more
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A long‐term broadcast ephemeris model for extended operation of GNSS satellites [PDF]
NAVIGATION, 2020 GNSS positioning relies on orbit and clock information, which is predicted on ground and transmitted by the individual satellites as part of their broadcast navigation message. The predictions are typically refreshed at least once per day and partitioned into short-arc ephemeris data sets covering a representative validity period of 0.5-4 h.
Oliver Montenbruck +2 more
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Research on the Fitting Algorithm of GLONASS Broadcast Ephemeris Parameters [PDF]
Proceedings of the 2015 Joint International Mechanical, Electronic and Information Technology Conference, 2015 Xie Gang, Luming Quan
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Accuracy analysis of GPS broadcast ephemeris in the 2036th GPS week [PDF]
IOP Conference Series: Materials Science and Engineering, 2019 Satellite orbit error is one of main sources in Global Positioning System (GPS) receiver positioning error. Using broadcast ephemeris in navigation message, the receiver can calculate spatial position of GPS satellites, then combine pseudorange measurements and achieve positioning solution.
Lihua Ma, Xiaolan Wang, Shengming Li
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An Analysis on the Long-Term Variation of the GPS Broadcast Ephemeris Errors
The Journal of Korea Navigation Institute, 2014 Mingyu Kim, Jeongrae Kim
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Evaluation of BDS-2 and BDS-3 Satellite Atomic Clock Products and Their Effects on Positioning
Remote Sensing, 2021 The BeiDou Navigation Satellite System (BDS) has completed third phase construction and currently provides global services, with a mixed constellation of BDS-2 and BDS-3. The newly launched BDS-3 satellites are equipped with rubidium and passive hydrogen
Shengfeng Gu +5 more
doaj +1 more source
IET Communications, Volume 17, Issue 18, Page 2041-2052, November 2023., 2023 In this paper, we construct a multi‐clock source time synchronization model and formulate a problem to minimize the synchronization error and delay through jointly optimizing large‐timescale clock source selection and small‐timescale weight selection. A reinforcement learning‐based multi‐timescale multi‐clock source time synchronization algorithm named
Pengju Liu +5 more
wiley +1 more source
First Observations With a GNSS Antenna to Radio Telescope Interferometer
Radio Science, Volume 58, Issue 8, August 2023., 2023 Abstract We describe the design of a radio interferometer composed of a Global Navigation Satellite Systems (GNSS) antenna and a Very Long Baseline Interferometry radio telescope. Our eventual goal is to use this interferometer for geodetic applications including local tie measurements.
J. Skeens +7 more
wiley +1 more source