数据总线作为航空电子系统的“骨架”和“神经”，与航空电子技术的发展同步进行，相互促进，对航空电子系统起着至关重要的作用。主要概述航空机载数据总线及其发展现状，介绍目前几种典型的机载数据总线技术，分析传输协议、拓扑结构、技术特点及应用现状，并进行比较，论述了可变规模互连接口（SCI）和光纤通道技术在未来航空领域具有广阔的应用前景。%As the“framework”and“nerve”of aviation electronic systems,the airborne data bus plays an important role, develops with aviation electronic technique simultaneously,and promotes each other as well. Several typical airborne data bus techniques and their development actualities at present are summarized in this paper. Their transmission protocols,topology structures,technique characteristics and application actualities are analyzed and compared. The expansive application fore-ground of SCI(scalable coherent interface)and FC(fiber channel)technology in the aviation domain is discussed.
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