3、证仿真结果。由仿真结果可知:电路工作结果准确,整体性能稳定,占用相对较少的资源,符合最初的设计要求。关键词:GPS;FPGA;IRIG-B码;扩频通信IDesignandImplementationofIRIG-BCodebasebandCircuitbasedonFPGAAbstractThemainpurposeofthispaperis to design IRIG-B codecircuitforthereceivedtimeinformation,thenimplementthedire