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Efficiency of precise point positioning in Peninsular Malaysia from an ephemeris perspective
AIP Conference Proceedings, 2023 Hong Sheng Lee +3 more
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Comparing the Timescales in Public, Precise Ephemeris Products
The Precise Time and Time Interval Systems and Applications Meeting, 2021Given the importance of GPS multiple organizations regularly process satellite position and clock data to create publicly available, precise ephemeris products. Underlying each product is a timescale that describes the satellite clock biases. This work uses what amounts to a common view time-transfer method on three years’ worth of data to compare the ...
William Konyk
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Precise point positioning study to use different IGS precise ephemeris
2011 IEEE International Conference on Computer Science and Automation Engineering, 2011The fundamental principle and considered fundamental factors of GPS precise point positioning are discussed, the experimental research show that the error of GPS precise point positioning is greater to use broadcast ephemeris, and broadcast ephemeris can obtain only the accuracy of meter level, the positioning error of Z direction is greater than X ...
null Fumin Lu, null Jin Li
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Ephemeris and Timing Error Disambiguation Enabling Precise LEO PNT
IEEE Transactions on Aerospace and Electronic SystemsThe ephemeris and timing errors of low Earth orbit (LEO) satellites are modeled, leading to an approach to disambiguate these errors from pseudorange-type measurements.
Joe Saroufim, Zaher M. Kassas
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Broadcast Ephemeris Accuracy Analysis for GPS Based on Precise Ephemeris
Applied Mechanics and Materials, 2014The accuracy of broadcast ephemeris is an important index of a satellite navigation system. The theory and method of precise ephemeris assessing broadcast ephemeris are introduced. The accuracy of GPS satellite broadcast ephemeris is assessed with the precise ones provided by IGS.
Rui Xi Jia +3 more
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An Efficient and Precise Method for Calculating the Dense Ephemeris of High Eccentricity Orbit
Chinese Astronomy and Astrophysics, 2021Abstract Detection and cataloguing of space targets are an important issue for spacecraft safety. The large number of space targets makes the workload of orbit calculation very heavy. Being fast in calculation, the analytical method however cannot handle the processing of high-precision observational data. The numerical method on the contrary is good
DAI Zhi-jun, XU Jin
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Overbounding Time-Correlated Clock & Ephemeris Errors for Precise Point Positioning
ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of NavigationSafe navigation in Global Navigation Satellite System (GNSS) standalone positioning has historically relied on Receiver Autonomous Integrity Monitoring (RAIM) and Advanced RAIM (ARAIM).
Rebecca Wang, Juan Blanch, Todd Walter
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Using Fourier series to fit The GPS precise ephemeris
2010 International Conference on Computer Application and System Modeling (ICCASM 2010), 2010On Base of analyzing the shortcomings of the methods used commonly to fit the GPS precise ephemeris, the paper proposes the new method using Fourier series to fit the GPS precise ephemeris. It expounds the basic principle of the method and presents the steps of implementation.
null Jiang Ruibo, null Liu Xiaoqiang
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Precise Timings of Galilean Satellite Eclipses and Assessment of the E-3 Ephemeris
Icarus, 1994 Abstract Astrometric positions for the Galilean satellites are derived from high-precision timings of their jovian eclipses observed with CCD cameras between 1990 to 1993, and the positions are compared to Lieske's E-3 ephemeris. The root-mean-square (rms) ephemeris residuals for Io and Callisto were only 80 and 89 km, respectively; the rms residuals
Anthony Mallama +5 more
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