IEEE1588精确时钟同步技术  

IEEE1588 Precise Time Synchronization Technology

作　　者：同江[1] 蔡远文[1] 解维奇[1] 杨立志[2] 

机构地区：[1]装备指挥技术学院 [2]中国人民解放军91746部队

出　　处：《导弹与航天运载技术》2010年第4期37-40,共4页Missiles and Space Vehicles

摘　　要：运载火箭测试发射控制系统采用VXI测试系统和光纤传输方案进行性能测试和信号传输,在一定程度上实现了测试过程的网络化,但是设备之间的同步能力比较差(达到毫秒级)。LXI采用IEEE1588精确时钟同步协议,其同步能力可以达到纳秒级,提高了测试系统中各个设备之间的时钟同步能力;对IEEE1588精确时钟同步协议进行研究,详细阐述体系结构和同步原理,最后对影响该协议同步精度的因素进行分析。The VXI test systems and the optical fiber transmission for performance test and signal transmission is adopted in the test-launch-control systems of launch vehicle.The networking of test process has been realized to some extent,but the synchronous abilities between equipments are weak（attained the millisecond class）.The LXI adopts IEEE1588 precise time synchronization protocol,whose synchronous ability can attain the nanosecond class,and the clock synchronous abilities between equipments are raised intensively.The IEEE1588 precise time synchronization protocol is researched,and its system structure and the principle of synchronization are expatiated.Finally,the factors that influence the accuracy of PTP are analyzed.

关 键 词：精确时钟同步协议 LXI 航天测试 同步精度 

分 类 号：V556[航空宇航科学与技术—人机与环境工程]