相对水平度无线差分测量系统对时方案设计  

Design of Time Scheme for Relative Horizontal Wireless Differential Measurement System

作　　者：刘爱东 王鹏超 LIU Aidong;WANG Pengchao(Naval Aeronautical University,Yantai 264001)

机构地区：[1]海军航空大学,烟台264001

出　　处：《舰船电子工程》2018年第11期138-141,146,共5页Ship Electronic Engineering

摘　　要：舰船不同位置处的各装备基准面之间的相对水平度测量需要使用相对水平度无线差分系统。分析了相对水平度无线差分测量系统各水平度测量节点对时精度需求,研究阐述了精确时钟同步协议(Procision Time Protocol,PTP)1588协议的工作原理、时钟模型和延时测量机制。在该协议分析研究的基础上,结合相对水平度无线差分测量系统的网络特点和对时精度需求,分析了PTP 1588在相对水平度无线差分测量系统网络应用的关键点,选取合适的机制和参数,对报文格式、主从结构等进行针对性设计,构建了针对此特定应用的高精度时间对时方案,并进行了误差因素分析。Relative horizontal degree measurement between the base planes of various equipment at different positions of the ship requires the use of the relative horizontal wireless differential system. The requirement of timing accuracy for different levels of relative level wireless differential measurement system is analyzed. The working principle, clock model and delay measurement mechanism of the Procision Time Protocol （PTP） 1588 protocol are discussed. Based on the analysis of the protocol, combined with the relative level of differential measurement system of wireless network characteristics and synchronization accuracy requirements, the key point of PTP 1588 in the relative level of differential measurement system for wireless network applications is analyzed, the appropriate mechanisms and parameters are selected, the pertinent design of message format, master-slave structure and so on is carried out. The high precision time versus time scheme for this particular application is constructed, and the error analysis is carried out.

关 键 词：PTP1588协议 无线差分测量系统 对时方案 无线传感器网络 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]