Prospects of Real-time Satellite Positioning Using EPN Resources

摘要

Using real-time GNSS data streams as available from EUREF and IGS resources enable new positioning applications. Among them are the estimation of satellite and receiver clock corrections and the estimation of coordinates via Precise Point Positioning (PPP). Moreover, Zenith Path Delay (ZPD) parameters may be derived as well as ionosphere mapping may be possible. Precise GNSS satellite clocks are a necessary input for the PPP technique. For real-time PPP clock corrections have to be estimated and transmitted to the user also in real-time. The paper will concentrate on the general strategy for deriving coordinates from EPN resources in real-time. Tools and techniques developed for that are presented. Furthermore, consequences of current standardization efforts for users as well as service providers will be outlined.