High-precision GNSS navigation system based on BDS positioning

The invention discloses a high-precision GNSS navigation system based on BDS positioning, relates to the field of navigation systems, and provides the following scheme aiming at the problems that a currently used GNSS navigation system is relatively low in precision, so that positioning cannot be well carried out during use, and positioning deviation often occurs. The following solution is provided: the high-precision GNSS navigation system comprises a BDS positioning plate, the BDS positioning plate comprises a positioning module, a speed measurement module, a star clock error module, a relativistic error module, a rotation error module and an ephemeris error module, the BDS positioning plate is internally provided with a signal transmitting module, the output end of the signal transmitting module is provided with a GNSS plate, the GNSS plate is internally provided with a GNSS signal processing mechanism, and the GNSS signal processing mechanism comprises a network RTK module and a precise point positioning