摘要
"无码元翻转持续时间"、"码速率准确度和稳定度"等信号属性参数对PCM遥测系统同步性有着重要的影响,国家军用标准对此有一定描述;针对长期应用系统出现的某些与国军标相异现象,采取对系统内在实现机理剖析和验证测试相结合方法,探明了问题所涉及的系统内核以及系统能够适应的信号参数值域;解析了长期应用中遇到的诸多问题产生的根本原因;为当前和今后工程应用进行问题分析和研究提供了重要参考。
According to the national military standards,the signal characteristics,such as duration of non-return-to-zero （NRZ） conversion and accuracy and stability of bit rate,are of significant importance for signal synchronization of real-time telemetry system.To address the abnormal phenomenon in practical applications,this paper first interprets the principle of real-time telemetry system in depth.Then,based on the theoretical study,this paper gives the relevant system core and verifies the range of signal characteristics applying to a real-time telemetry monitoring system.Further analysis is completed for well explaining several practical phenomenon.Finally,the methodology for analyzing and testing,as well as testing results,are all provided in the last part.
出处
《计算机测量与控制》
2015年第9期2957-2959,2963,共4页
Computer Measurement &Control
基金
国防基础科研项目(A0520132031)
关键词
PCM信号
无码元翻转
码速率
同步
冗余位
PCM signal
non-return-to-zero
bit rate
synchronization
redundancy
