ION Technical Content
Atmospheric Models Workshop
| Abstract: | "The addition of Galileo and/or Glonass to GPS will make a big difference with regard to navigation and positioning performance Ð particularly as baseline lengths increase. The author will present one comparison plot comparing a 25 satellite GPS-like constellation with a 49 satellite constellation. One could think of the latter constellation as an approximation to GPS plus Galileo. One can see the improvement in both accuracy and consistency due to the greatly improved visibility with 12 to 18 satellites in view at all times. One can see the improved initial convergence times as well. The author will provide a simulation example to show the difficulty in solving for a vertical tropospheric delay unknown in RTK mode with GPS alone. The experiment is rerun with the 49 satellite constellation and the vertical delay can be determined much more readily. The author will show the result of fixing the 5-meter wide lanes and the fixing the 86- centimeter wide lane. Finally the author will discuss what he has learned about the costs and benefits of broadcasting tropospheric delay data, based on NOAA weather data, to GPS users." |
| Published in: |
Proceedings of the 61st Annual Meeting of The Institute of Navigation (2005) June 27 - 29, 2005 Royal Sonesta Hotel Cambridge, MA |
| Pages: | 684 - 689 |
| Cite this article: | NA,, "Atmospheric Models Workshop," Proceedings of the 61st Annual Meeting of The Institute of Navigation (2005), Cambridge, MA, June 2005, pp. 684-689. |
| Full Paper: |
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