分布式测试系统同步触发脉冲传输时延的高精度测量方法  

High accuracy measurement method for synchronous triggering pulse transmission delay in distributed test system

作　　者：牟宗磊[1] 宋萍[1] 翟亚宇 陈晓笑 MOU Zong-lei;SONG Ping;ZHAI Ya-yu;CHEN Xiao-xiao(Key Laboratory of Biomimetic Robots and System,Beijing Institute of Technology,Beij ing 100081,China)

机构地区：[1]北京理工大学仿生机器人与系统教育部重点实验室,北京100081

出　　处：《吉林大学学报（工学版）》2018年第4期1274-1281,共8页Journal of Jilin University:Engineering and Technology Edition

基　　金：国防基础科研重大项目(JCKY2016208B008;JCKY2016209A003)

摘　　要：针对分布式测试系统中数据采集装置接收到触发指令的时延不同且未知而影响同步触发的问题,提出了一种实时在线测量触发脉冲传输时延测量模型和数据回传模型,以及基于延时链循环比较法的高精度时间间隔测量方法,实现了同步触发脉冲传输时延的精确测量,为后续同步触发误差的精确校准提供了高精度的时延数据。测试结果表明,该方法能实现分布式测试系统同步触发脉冲传输时延的高精度测量。A real-time triggering transmission delay measurement model and a data transfer model are proposed to solve the problem that the delay time of triggering instruction received by the data acquisition node in distributed test system is different and unknown.Furthermore,a high-precision time interval measurement method with the use of delay chain cycle comparison is proposed to achieve the propagation delay of the synchronous triggering pulse.The delay measurement provides highprecision delay data for subsequent calibration of the synchronization triggering error.The test results show that the proposed method can realize high-precision measurement of the synchronous triggering pulse transmission delay in distributed test system.

关 键 词：通信技术 分布式测试 同步触发 时延测量模型 时间间隔测量 

分 类 号：TN91[电子电信—通信与信息系统]