Navigation positioning method based on interchangeability of multiple navigation satellites

The invention provides a navigation positioning method based on interchangeability of multiple navigation satellites, and relates to the field of GNSS satellite navigation. By use of GNSS observation data obtained from global tracking station networks, through application of a multi-GNSS precision clock error fusion solution method, clock error products of each satellite navigation system under a unified reference are obtained, pre-pushing is carried out, and the clock error products are broadcast to users so that seamless application of the navigation observation data of each satellite navigation system by the users is realized, and the availability and the continuity of navigation positioning of a multi-GNSS navigation system are improved.