Common-view time synchronization method and common-view time synchronization device for Beidou satellite navigation

The invention discloses a common-view time synchronization method and a common-view time synchronization device for Beidou satellite navigation. The method comprises the steps that at least two observation stations located at different places respectively obtain original observation data of the same time signal of a device to be positioned broadcasted by Beidou satellite navigation and calculate observation clock error observation data of reference station time and each satellite; a Beidou satellite adopts the same signal as a common-view reference source, all remote reference stations performRTK observation and simultaneously perform real-time time difference comparison with the common-view reference source in a Beidou common-view mode, and internal clock output is corrected by utilizinga comparison result to keep synchronization with the reference source. According to the invention, the advantage of the existing high-precision satellite observation capability of a reference stationreceiver is effectively ut