Research on the Fitting Algorithm of GLONASS Broadcast Ephemeris Parameters
- 10.2991/jimet-15.2015.48How to use a DOI?
- Satellite Navigation System, GLONASS, Broadcast Ephemeris Parameters, Difference Quotient Approximation, User Range Error
The accumulated error of GLONASS broadcast ephemeris is nearly 1 meters within 15 minutes due to simplified perturbation force model. Aiming at this problem, a new method of GLONASS broadcast ephemeris fitting algorithm is introduced. In this method, a nonlinear measurement model is built based on the GLONASS broadcast ephemeris user algorithm and linearized. And the partial derivative of Jacobin matrix is computed by difference quotient approximation. Then the GLONASS broadcast ephemeris parameters are estimated by using least square method. The simulation results show that the average user range error (URE) caused by fitting broadcast ephemeris is improved about two orders compared with the traditional broadcast ephemeris and achieves millimeter level. Finally, a verification system was built by the Japanese RTKLIB tools, the availability of the fitting broadcast ephemeris is validated from the positioning angle.
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Xie xiao Gang AU - Luming Quan PY - 2015/12 DA - 2015/12 TI - Research on the Fitting Algorithm of GLONASS Broadcast Ephemeris Parameters BT - Proceedings of the 2015 Joint International Mechanical, Electronic and Information Technology Conference PB - Atlantis Press SP - 259 EP - 262 SN - 2352-538X UR - https://doi.org/10.2991/jimet-15.2015.48 DO - 10.2991/jimet-15.2015.48 ID - Gang2015/12 ER -