Application of Precise Point Positioning in Airborne Survey

Applying precise point positioning(PPP) technology to airborne survey without ground base station was implemented in this paper.The results show that cm to dm accuracy could be achieved.Epoch-by-epoch 3D RMS calculated from postfit residuals of observations in both kinematic and static case is smaller that 3 cm.The external RMS calculated from epoch-by-epoch differences between the PPP solution and double-differenced solution with kinematic data shows that horizontal RMS is smaller than 5 cm,vertical RMS is better than 10 cm.Making differences epoch by epoch between PPP simulated kinematic solution and known coordinate of static base station derives RMS shows that horizontal RMS is smaller than 3 cm,vertical RMS is better than 5 cm.