基于FPGA的IRIG-B DC码编码设计与应用

Design and application of IRIG-B DC code coding based on FPGA

IRIG-B码授时是一种较为通用的时间同步方式,在一定条件下,IRIG-B码授时相对于GPS授时具有更高的可靠性和稳定性。文章提出了基于单片机和FPGA硬件平台的IRIG-B码时间同步方法,首先采用单片机对固定格式的消息进行一系列信息提取,再利用FPGA对信息进行转换后输出特定波形。文章方案得到的FPGA输出的波形与理论结果完全一致且同步速度较快,证明IRIG-B授时方案的正确性和可行性。

IRIG-B code time service is a more general time synchronization method.Under certain conditions,IRIG-B code time service has higher reliability and stability than GPS time service.This paper proposes an IRIG-B code time synchronization method based on a microcontroller and FPGA hardware platform.First,a microcontroller is used to extract a series of messages in a fixed format,and then the FPGA is used to convert the information and output a specific waveform.The FPGA output waveform obtained by the solution in this paper is completely consistent with the theoretical results and the synchronization speed is relatively fast,which proves the correctness and feasibility of the IRIG-B timing solution.