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.<<ETX>>
[1]
D. Wells,et al.
Guide to GPS positioning
,
1987
.
[2]
L R Gibson.
A Derivation of Relativistic Effects in Satellite Tracking.
,
1983
.
[3]
Gérard Lachapelle,et al.
Analysis of a High-Performance C/A-Code GPS Receiver in
,
1992
.
[4]
Mark Caissy,et al.
Canada’s active control system data acquisition and validation
,
1993
.
[5]
D. J. Allerton,et al.
Book Review: GPS theory and practice. Second Edition, HOFFMANNWELLENHOFF B., LICHTENEGGER H. and COLLINS J., 1993, 326 pp., Springer, £31.00 pb, ISBN 3-211-82477-4
,
1995
.