Precipitable Water Vapor Estimates in the Australian Region from Ground-Based GPS Observations

Table 1

GPS tropospheric ZPD computation strategy.

Software	Bernese GPS Software Version 5.0
Processing method	Relative positioning
Satellite trajectories and earth orientation	Best available IGS products
Satellite and receiver antenna phase center calibration	IGS08 absolute phase center offset and variation model
Tropospheric model	A priori model is the Saastamoinen-based hydrostatic mapped with the dry-Neill
Tropospheric estimation	Zenith delay corrections are estimated using the wet-Niell mapping function with a temporal resolution of 1 hour. N-S and E-W horizontal gradients are solved.
Tropospheric mapping function	Niell
Elevation cut-off	10°