The WADGPS (wide area differential GPS) is affected by site displacements with the dominant component of solid earth tide within up to 30cm, through the process of satellite orbit determination. The WADGPS based on the recent standards, L5 SBAS, augmenting DFMC (Dual-Frequency Multi-Constellation) environment has an option to consider this effect because of its accuracy much better than the legacy L1 SBAS and comparable to the magnitude of the effects. This paper gives some formulation of site displacement effects on WADGPS and proposes a cancellation method. It is confirmed that proposed method cancels the effects with 1 to 2cm accuracy for the configuration of Japanese MSAS.
Takeyasu Sakai (Thu,) studied this question.