| 摘要: |
| 针对现有机载时间同步系统在综合航电系统架构下通用性和可扩展性不足的问题，提出了一种具有开放式特征的机载时间同步系统架构。首先根据机载时间同步系统应用需求，分析了机载平台可选的技术手段，然后围绕时间链路、时间处理、时间管理、时间应用等基本要素，将机载时间同步系统自上而下划分为三个部分，从而形成分层次的机载时间同步架构。该架构在层间采用了标准开放接口，能同时兼容多种机间时间比对链路，具备多时间管理和时间品质评估的能力。最后，介绍了该架构下的时间同步实现流程，并分析了影响同步精度的主要误差环节。桌面测试结果表明，所提架构能够实现优于10 ns的时间同步精度。 |
| 关键词: 综合航空电子 协同应用 时间同步 开放式架构 |
| DOI： |
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| 基金项目: |
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| Open architecture design for airborne time synchronization system |
| QIAN Dong |
| () |
| Abstract: |
| For the deficiency problem on commomnality and scalability of the existing airborne time synchronization system when used in integrated avionics systems,an open time synchronization system architecture is proposed.First,according the application requirement of the airborne time synchronization system,optional technology means is analyzed.Then,on the basis of basic elements such as time link,time process,time management,and time application,the time synchronization system is divided to three parts.As a result,a hierarchical airborne time synchronization airchitectecture is put forward.The architecture employs a standard open interfaces among layers,is compatible with several time synchronization links,and also can evaluate time figure of merit.Finally,the time synchronization implementation procedure is introduced and the major factors affecting synchronization accuracy are analyzed.Desktop test results show that the proposed architecture can achieve synchronization accuracy better than 10 ns. |
| Key words: integrated avionics system cooperative application time synchronization open architecture |
