遥测模拟发射系统中PCM信号发生模块设计

Design of the PCM Signal Generator Module in Remote Sensing Simulative Transmitting System

介绍了遥测模拟发射系统中PCM信号发生模块的设计与实现,给出了PCM信号发生模块的硬件原理图、FPGA同PCI9054硬件连接图、PCM数据帧格式和DSP主程序软件设计流程图。模块通过PCI9054接收计算机数据,DSP对计算机数据流进行PCM编码,最后将PCM数据提供给遥测发射机。实验表明文中的模块设计方法正确可行且适用性好,可以满足遥测模拟发射系统的要求。

A design of the PCM signal generator module in remote sensing simulative tramsmitting system is introduced. The blockdia gram of hardware, the design of hardware interface between PCI9054 and FPGA, PCM frame format and the program flow chart are given. Though the PCI9054 receives data and the DSP makes the computer data into PCM coding, this module provides signal to telemetry transmit ter. The experiments proved the design of the module were correct and applicable for the remote sensing simulative transmitting system.