Study On The Application Of Kinematic Precise Point Positioning By GPS

Kinematic Precise Point Positioning(PPP) could be widely used in precise navigation and positioning, data collection for GIS, science investigation owing to its strongpoint of convenient operating and non base station. At present, PPP is one of focuses in GPS research.We interpolate the precise orbit and satellite clock errors which downloaded from IGS with Lagrange , and use the dual frequency carrier phase and pseudo-range observations. The combination of dual carrier phase can be used to eliminate the delay influence of ionosphere delay, and also be used to detect the cycle slip. In PPP, the delay of troposphere can be corrected with the Saastamoinen model. Besides, the influence of the earth rotation and relativity effect will affect the range and the satellite clock, also should be corrected. Build the PPP observation equation, then we could get the coordinate in ITRF by Least Square evaluation.In this paper, three model of PPP were analysed by programimg to manage the observe data. It is proved that, by single epoch solution, kinematic Precise Point Positioning can get the coordinate with less than one meter precision.