Table 2 PPP processing strategy
Item | Strategy |
|---|---|
Data | 10 IGS stations, May 1–31, 2021 |
Estimator | Least squares (Chang, 2015) |
Sampling | 30 s |
Elevation cut-off | 10° |
Satellite clock | (1) IGS; (2) Improved RTS, which transmits the linear coefficient at different intervals |
Satellite orbit | IGS product of GFZ |
Tropospheric delay | Saastamoinen model for the dry delay and estimation for the wet component |
Ionospheric delay | Ionosphere-free |
Relativistic effect; Sagnac effect; phase wind-up effect; tide effect | Corrected model (Petit & Luzum, 2010) |
Station coordinates | Estimated |
Receiver coordinates | Static and kinematic modes |