基于FPGA的混合遥测数据复接技术的研究

摘要

In a multiplex transmission of PCM telemetry system, in order to save channel resources and reduce the modulation and demodulation equipment complexity, telemetry data multiplexing system has been widely applied. Mixed signal is digitised firstly, then sent to FPGA to interact with it. FPGA-based digital multiplexing system has a modular design, through the establishment of a set of frame model can complete multiplexer. Finally, in the Quartus II integrated environment, the comprehensive system, layout and time sequence simulation are conducted. Simulation results verify the logical relations between input and output, and the board level test in development board shows that the function is stable and reliable.%在进行多路传输的PCM遥测系统中,为了节省信道资源,降低调制解调设备的复杂度,遥测数据复接系统得到了广泛应用.混合信号处理首先需要进行数字化再交给FPGA并且与之交互.基于FPGA的数字复接系统具有模块化设计,通过建立一个组帧模型完成多路复用.最后在Quartus Ⅱ集成环境下进行了系统的综合、布局布线及时序仿真.仿真结果验证了输入与输出的逻辑关系,并且下载到开发板中进行了板级验证,其功能稳定可靠.