The comparison of different difference models for pseudo-range baseline is done. At last, we get some practical conclusions through computing some pseudo-range baselines in a GPS network.

• 摘要分析了对伪距单差、双差模式及同种模式不同解法，提出了加权平均单历元的伪距单差，通过解算实测的GPS网，得出了一些具有参考价值的结论。