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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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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.
R. Jia +3 more
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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
F. Lu, Jin Li
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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.
Jia Ruibo, L. Xiaoqiang
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Machine learning approach for predicting precise ZTD produced by GNSS broadcast ephemeris
2022 IEEE 11th Global Conference on Consumer Electronics (GCCE), 2022Precise modelling of tropospheric delay plays an important role of in the precise Global Navigation Satellite System (GNSS) positioning application as well as meteorological studies and weather forecasting.
T. Matsumura +3 more
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African Educational Research Journal, 2020
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Tuna Erol, Rectorate Construction
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Tuna Erol, Rectorate Construction
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Advances in Space Research, 2021
Abstract The main challenge in real-time precise point positioning (PPP) is that the data outages or large time lags in receiving precise orbit and clock corrections greatly degrade the continuity and real-time performance of PPP positioning. To solve this problem, instead of directly predicting orbit and clock corrections in previous researches ...
Qing Zhao +5 more
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Abstract The main challenge in real-time precise point positioning (PPP) is that the data outages or large time lags in receiving precise orbit and clock corrections greatly degrade the continuity and real-time performance of PPP positioning. To solve this problem, instead of directly predicting orbit and clock corrections in previous researches ...
Qing Zhao +5 more
semanticscholar +3 more sources
Precise Seasat ephemeris from laser and altimeter data
Advances in Space Research, 1985 Abstract The determination of a precise Seasat ephemeris has required improvements in the modeling of the gravitational and nongravitational forces acting on the satellite. Because laser range data were used as the primary ground-based tracking measurement, the limited data distribution in July and August, 1978, necessitated the use of other data to ...
B. E. Schutz, B. D. Tapley, C. K. Shum
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Journal of Navigation, 2017
To meet the requirements of different applications, the International Global Navigation Satellite System (GNSS) Service (IGS) has provided Global Positioning System (GPS) satellite ephemerides and clock products with different accuracy levels (final ...
Zengke Li +3 more
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To meet the requirements of different applications, the International Global Navigation Satellite System (GNSS) Service (IGS) has provided Global Positioning System (GPS) satellite ephemerides and clock products with different accuracy levels (final ...
Zengke Li +3 more
semanticscholar +3 more sources
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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