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Table 1 PPP processing strategies

From: Augment BeiDou real-time precise point positioning using ECMWF data

  Standard PPP ECMWF-A PPP ECMWF-P PPP
Sampling rate(s) 30
Cutting-off angles 10°
Observations Ionosphere-free combinations
Antenna igs08.atx
Estimator Forward-only Kalman filter
Ambiguity Float
Troposphere ZHD Niell model
Troposphere ZWD Estimation of ZWD [random walk process 10 mm/sqrt(h)] ECMWF analysis data and estimation of residual ZWD [random walk process 10 mm/sqrt(h)] ECMWF prediction data and estimation of residual ZWD [random walk process 10 mm/sqrt(h)]
Troposphere mapping function Niell mapping function
Multi-GNSS satellite clock and orbit MGEX clock and orbit from GFZ (Deng et al. 2016)