Run GLOBK to get 3-epoch (4-yr) velocities
Get velocities from the 4-year span:
$ rm globk_vel.org globk_vel.log
$ globk 6 globk_vel.prt globk_vel.log eura.gdl globk.cmd VEL >& globk.out
where the VEL
token at the end tells globk to uncomment the lines in globk.cmd
that begin with VEL
.
Check the globk_vel.org
file under EXPERIMENT LIST
for the chi2 increments (< 1.0) in stacking the 3 H-files and the stabilization statistics in the VEL STATISTICS
and POS STATISTICS
lines.
For this network and the IGS14 (ITRF2014) .apr
file, the 9 stabilization stations fit the reference frame in velocity at the level of ~ 1 mm/yr horizontal and 5 mm/yr vertical with uncertainties about half of the rms.