Single point satellite navigation accuracy-what the future may bring

Author

Lachapelle, G. ; Klukas, R. ; Qiu, W. ; Melgard, T.E.

Author_Institution

Dept. of Geomatics Eng., Calgary Univ., Alta., Canada

fYear

1994

fDate

11-15 Apr 1994

Firstpage

16

Lastpage

22

Abstract

In order to assess the level of accuracy which may be available in the future with GPS as better broadcast or quasi real-time precise ephemerides become available, the accuracy performance and long term stability of single point GPS is analyzed using P code L1 and ionospherically corrected (L1/L2) data collected over a period of several months at selected permanent stations of the Canadian Active Control System. Precise post-mission orbits are used for the analysis. Instantaneous and time-averaged positioning is investigated to assess accuracy enhancement versus observation time. Statistics for various solutions in each of the three coordinate components are presented. A comparison of results obtained with precise and broadcast orbits is presented. A comparison of L1 versus L1/L2 results yield a quantitative estimate of the effect of the ionosphere on each of the three coordinate components

Keywords

ionospheric electromagnetic wave propagation; radionavigation; radiowave propagation; satellite relay systems; Canadian Active Control System; GPS; L1/L2 data; P-code L1; accuracy enhancement; accuracy performance; broadcast precise ephemerides; instantaneous positioning; ionosphere; ionospherically corrected data; long term stability; observation time; post-mission orbits; real time precise ephemerides; single point satellite navigation accuracy; statistics; time-averaged positioning; Control systems; Global Positioning System; Orbits; Performance analysis; Real time systems; Satellite broadcasting; Satellite navigation systems; Stability analysis; Statistics; Yield estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Position Location and Navigation Symposium, 1994., IEEE

Conference_Location

Las Vegas, NV

Print_ISBN

0-7803-1435-2

Type

conf

DOI

10.1109/PLANS.1994.303290

Filename

303290