Tp. Yunck et al., 1ST ASSESSMENT OF GPS-BASED REDUCED DYNAMIC ORBIT DETERMINATION ON TOPEX POSEIDON, Geophysical research letters, 21(7), 1994, pp. 541-544
The reduced dynamic GPS tracking technique has been applied for the fi
rst time as part of the GPS experiment on TOPEX/Poseidon. This techniq
ue employs local geometric position corrections to reduce orbit errors
caused by the mis-modeling of satellite forces. Results for a 29-day
interval in early 1993 are evaluated through postfit residuals and for
mal errors, comparison with GPS and laser/DORIS dynamic solutions, com
parisons on 6-hr overlaps of adjacent 30-hr data arcs, altimetry closu
re and crossover analysis. Reduced dynamic orbits yield slightly bette
r crossover agreement than other techniques and appear to be accurate
in altitude to about 3 cm RMS.