基于数字信号处理的脉冲编码器

摘要

Aiming at the problem of too large size and too many pins of traditional telemetry coder,a PCM te-lemetry coder based on DSP was introduced in this article.This PCM telemetry coder used DSP chip instead of FPGA and microcontroller as the main CPU which accomplish two functions including digital signal processing and telemetry coding in a single DSP.This telemetry coder would minimize the size of electronics system of weaponry.The result of simulation experiment showed that,under the conditions requested by the trajectory correction weaponry,the DSP chip could code as asked form a complete PCM data steam,and accomplished the telemetry coding work.%针对传统编码器封装后体积较大、引脚较多的问题,本文提出了基于数字信号处理的脉冲编码器。该编码器采用 DSP 芯片代替单片机、FPGA 作为处理器,在同一块 DSP 芯片上实现数字信号处理和遥测编码的双重功能,减小武器弹药的电子系统体积,节省了弹药内部空间。仿真实验结果表明：在弹道修正引信遥测所需要的条件下,DSP 芯片能按照编码程序进行编码,形成完整的 PCM 遥测信号码流,实现 PCM 遥测编码功能。