Base station optical fiber time service system based on BD/GPS double antennas

The utility model discloses a base station optical fiber time service system based on BD/GPS double antennas, which comprises at least one satellite antenna, a BBU synchronization system host and a plurality of BBU synchronization system slaves, the satellite antenna is connected with the host, and the host is connected with all the slaves through optical fibers; wherein the host comprises a satellite signal receiving module with a 1PPS + TOD receiving unit, and the satellite signal receiving module can analyze satellite signals to obtain 1PPS + TOD time information. According to the time service system provided by the utility model, satellite signals can be cascaded with a plurality of BBU devices by only needing a set of BD/GPS antenna without a cable feeder, so that the number of antennas can be greatly reduced, the occupation of sky surface resources and machine room space can be reduced, high-precision time synchronization information can be provided for a mobile base station, and the time accuracy of al