Table 1 Parameterizations of the KF and LSM solutions. For the KF part, the PSD Φ for random walk processes are given. For LSM, the temporal resolution of the piecewise linear functions estimated in the adjustment are given. The listed constraints are relative and valid for the intervals stated in the other column
From: Tropospheric delay determination by Kalman filtering VLBI data
Parameter | Φ (KF) | Interval (LSM) | Constraints (LSM) | |||
|---|---|---|---|---|---|---|
Station coordinates | 0.1 | cm2/day | 1 | day | No constraints | |
Source coordinates | 0.01 | mas2/day | 1 | day | No constraints | |
Pole coordinates and UT1 | 0.1 | mas2/day | 1 | day | 0.0001 | mas |
Celestial pole offsets | 0.01 | mas2/day | 1 | day | 0.0001 | mas |
Clock parameters | 52 | cm2/daya | 1 | h | 1.3 | cm |
ZWD | 19 | cm2/dayb | 20 | min | 1.5 | cm |
Gradients | 0.02 | cm2/day | 6 | h | 0.05 | cm |