Transform Design of IRIG-B Time Code Based on BD Time System

The output of precise time information is required in high-precision equipment.B code is a kind of time code which is widely adopted in time-frequency equipment.In this paper,by taking FPGA as the core,the method for B code circuit transformation based on Beidou timing information is designed.And the the Beidou timing information is from Beidou satellite navigation system developed independently by China,which ensures the information security of the users at homer.In this paper FPGA technology is employed to complete encoding of B code and guarantee the reliability of the system in the timing.