不同机载测试网络环境对IEEE 1588时钟同步系统性能的影响分析

Lmpact Analysis for Capability of IEEE 1588 Clock Synchronization System from Different Flight Test Networked Condition[JZ)][HS)]

摘要:

为深入研究不同机载测试网络环境对IEEE 1588时钟同步系统性能的影响,提出了使用正态分布曲线描绘时钟同步误差的方法;通过分析IEEE 1588时钟同步系统的工作原理,决定采用硬件方式测量时钟同步误差分布,并利用统计学的分析方法,分析不同的机载测试网络环境对IEEE 1588时钟同步系统性能的影响;分析结果表明网络拓扑结构、网络节点负载和外部环境温度都对IEEE 1588时钟同步系统的性能有一定影响,其中网络拓扑结构的变化对IEEE 1588时钟同步精度的影响比较大;这一研究成果对网络化机载测试系统的设计与使用具有一定的借鉴意义。

Abstract:

In order to study impact analysis for capability of IEEE 1588 clock synchronization system from different flight test networked condition, the method of using the normal distribution curve to depict clock synchronization error is proposed. By analyzing the theory of the precision of IEEE 1588 clock synchronization system, the method of hardware way is decided to measure the error distributing of the clock synchronization system . By the statistic analysis means, impact for capability of IEEE 1588 clock synchronization system from different flight test networked condition is analyzed. The data result indicates that networked topology、network node load and exterior temperature all have same effect on capability of IEEE 1588 clock synchronization system. And network topology changes will affect a large extent IEEE 1588 clock synchronization accuracy. The research results have certain significance to the design and use of airborne network test system.