Abstract in order to improve measured precision of time delay in network time protocol ( ntp ) , a highly precise time synchronization method was proposed in network 摘要针对ntp技术中对网络时间延时测量的不足，提出了在网络支持下的高精度时间同步方法。
The warning gathering module of this system will use snmp , icmp protocals to realize the node warning surveillance and the data extration of performance monitoring datas 将利用snmp 、 icmp等协议完成节点告警监控和性能监控数据的提取,并利用ntp协议完成网络时间同步功能。
This article introduces the principle , working mode and working process of time synchronization protocol , and then discusses the solutions to ntp in campus network by referring to the actual network structure of xingtai university 摘要介绍了时间同步技术中的时间同步协议的原理、工作模式和工作过程，并结合我院校园网的实际网络结构，讨论了ntp在校园网中的解决方案。
The first two chapters are focused on the said - ball and wang - ball curves , including their definitions , properties and explicit conversion formulas to the bezier representation , the author also points out that the said - ball basis is ntp 前两章内容包括said - ball基函数和wang - ball基函数的定义、性质、升降阶以及与b zier曲线的互化，同时指出said - ball基函数的规范化全正性。
In order to reduce access frequency to the ntp time server , and efficiently relieve the over - load situation of server . a time synchronization algorithm based on frequency adjustment in distributed system was proposed . under the same accuracy requirement , 为了降低internet上对ntp时间服务器的访问频率，有效缓解时间服务器资源负担过重的状况，提出了一套适用于分布式系统的基于频率调节的时间同步算法。
This paper suggests that in dems , priority levels be used to solve the problem of absolute time sequence consistency and data view be used to solve the problem of relative time sequence consistency . system time synchronization becomes a serious problem in large dems , this paper studies time synchronization technology , considering system expansibility and high precise time synchronization , and suggests that a design thinking of ntp solves time synchronization in dems 时间同步是大规模分布式试验与测试系统面临的棘手问题，论文对时间同步技术进行深入研究，考虑系统的可扩展性及同步精度要求，引用了解决系统时间同步的ntp协议软件同步算法，并对其进行了详细阐述与分析。
The actual use and theory analysis indicate that labwindows / cvi development kit can enhance perfectly system real time measurement and control abilities ; detailed data formats can be transformed easily target database by mfc odbc ; real _ time main memory database directly accessing main memory is a perfect scheme to meet the real time requirement ; priority levels and data view that are designed on system characteristics , can solve primely the problem of time sequence consistency ; ntp can basically meet system time synchronization requirement 理论分析和编程实现结果表明labwindows cvi作为测试控制软件开发工具对系统实时测试、控制性能有很大的提高； mfcodbc能极其方便地实现对具体的数据格式进行数据转换；以内存直接寻址方式的实时内存数据库是解决系统实时性的理想方案；针对系统特点而设计的优先级和数据视图能很好的解决系统时序一致性问题； ntp协议软件同步算法基本满足系统同步精度要求。
