Table 2 Comparison of important PPP-RTK parameters and processing strategies between server and user sides
From: Review of PPP–RTK: achievements, challenges, and opportunities
Parameter | Notation and interpretation | Processing strategy | |
|---|---|---|---|
Server | User | ||
Coordinates | \(g_{r}^{s} \left( k \right) \cdot \Delta x_{r}^{s} \left( k \right),k = 1,2,3\) | Fix | Estimate |
ZTDs | \(T_{w,r}^{i}\) | Estimate | Constrain |
Ionospheric delays | \(\tilde{I}_{r,1}^{i} - \frac{{f_{2}^{2} }}{{f_{1}^{2} - f_{2}^{2} }} \times \left( {d_{{\text{RDCB,12}}} + d_{{{\text{SDCB,}}12}}^{i} } \right)\) | Estimate | Constrain |
Satellite phase biases | \(b_{j}^{s} - \frac{{\mu_{2} d_{1}^{s} - d_{2}^{s} }}{{\mu_{2} - 1}} + \frac{{\mu_{j} }}{{\mu_{2} - 1}}d_{{{\text{SDCB}},12}}\) | Estimate | Correct |
Satellite code biases | \(d_{j}^{i}\) | Correct | Correct |