摘要
本文设计了一种用于PCM遥测的同步解调器 ,提出了针对瞬态过程PCM遥测解调数据的采集策略 ,利用缓冲PAM从连续不断的PCM码流中捕捉到瞬态过程。并用FPGA技术实现码同步器和帧同步器 ,使整个遥测解调器在单板PC插卡上实现并具有较低的成本 ,该方案用于 4MHz码速率的数据解调。用Labwindows/CVI编制了虚拟仪器面板 ,完成对硬件的控制和瞬态多路解调数据的曲线显示。
In this paper,a PCM telemetry synchronization decoder is designed.A strategy for capturing the PCM telemetry data of transient process from the continuous PCM stream with buffer RAM is presented.The FPGA is used to complete the bit synchronizer and the frame synchronizer.The whole telemetry decoder is embedded in a PC card ,which is used for decoding 4Mbps-bit rate.The virtual instrument(VI)soft panel is programmed by using Labwindows/CVI to achieve the control of the hardware and the display,processing,restoring of the decoded multi channel data.
出处
《电子测量与仪器学报》
CSCD
2000年第1期66-70,共5页
Journal of Electronic Measurement and Instrumentation
关键词
遥测
解调器
同步
瞬态采集
虚拟仪器
PCM
设计
Telemetry
Decoder
Synchronization
Transient sample,Virtual instrument
