From: PPP-RTK considering the ionosphere uncertainty with cross-validation
Estimable Parameter | Interpretation |
---|---|
Coordinate | \(x, y, z\) |
Zenith wet troposphere delay | \(T_{r}\) |
Receiver clock | \(c \cdot \overline{dt}_{r,IF12} = c \cdot dt_{r} + \alpha \cdot b_{r,1} + \beta \cdot b_{r,2}\) |
Ionospheric slant delay | \(\overline{I}_{r,1}^{s} = I_{r,1}^{s} + \beta \cdot\left( {D_{{{\text{DCB}}}}^{r,12} - D_{{{\text{DCB}}}}^{s,12} } \right)\) |
Ambiguity | \(\overline{N}_{r,i}^{s} = N_{r,i}^{s} + B_{r,i} - B_{i}^{s} - \left[ {\left( {\alpha \cdot b_{r,1} + \beta \cdot b_{r,2} } \right) - \left( {\alpha \cdot b_{1}^{s} + \beta \cdot b_{2}^{s} } \right) - \gamma_{i} \cdot \beta \left( {D_{{{\text{DCB}}}}^{r,12} - D_{{{\text{DCB}}}}^{s,12} } \right)} \right]/\lambda_{i}\) |