基于PCI总线和FPGA的遥测数据同步技术

Research and Implementation of Telemetry Data Synchronization Technology Based on PCI Bus and FPGA

码同步和帧同步在遥测数据处理系统中占有非常重要的地位。设计中数据处理功能由FPGA(Field pro- graromable gate array)来实现。其中,码同步采用数字锁相环实现;特别是帧同步采用了一种容错技术与非容错技术相结合的方法,提高了帧同步码的检测速度系统的抗干扰能力。最后,计算机通过PCI(Periplaeral compo- nent interconnect)总线对恢复后的信息数据进行后续处理。

Code synchronization and frame synchronization of the telemetry data play an important role in the telemetry data processing system. The function of data processing is realized by field programmable gate array （FPGA）. Code synchronization is realized through digital phase locked loop （DPLL）. The error-tolerant technology is combined with non-error-tolerant technology to carry out the frame synchronization. The method enhances the detection speed and the anti-jamming ability of the system. Finally, the received information data through peripheral component interconnect （PCI） bus are proceeded by the computer.