基于GPS的多路时码时统系统设计

Unified Time System with Multiplex Time Code Output Based on GPS

时统系统是各种光电设备、导航系统上必备的高精度电子设备。针对天文导航和惯性导航设备对时统信息的需求,设计了一种多路串行时码输出的时统系统,阐述了设计方案及软硬件实现流程。基于FPGA实现了多路串口通信,可方便扩展更多路串口,通过DSP控制串口工作方式及GPS信息处理,可适用多数GPS接收机,处理系统输出格式。实验证明该设计功能齐全、可靠性高、易于调试,适用于为导航设备提供时间信号和频率信号以实现整个设备的时间和频率统一。

Unified time system is a necessary high-precise electronic equipment for photoelectric or navigated system.Aiming at the requirement of unified time information for celestial navigation and inertial navigation equipment,a unified time system with multiplex time code output is designed in this paper.The design scheme and the realization of software and hardware are elaborated.The multiplex serial communication is realized based on FPGA,and it can be expanded easily for more output.The serial working mode controlled by DSP and the GPS information processing are applied to mostly GPS receiver,and can process the system output format.The experiments prove that the system has multi-function,high reliability,and is easily debug.The designed unified time system can provide time signal and frequency signal for navigation equipment to keep unification of time and frequency.