摘要
本文介绍了数据链的基本概念、本质特征、组成要素及系统组成结构，讨论了数据链与其它系统，如通信系统、战术互联网和指挥自动化系统的主要区别。
In this paper, we introduce the basic concepts, characters and composing factors and system structure of D-Link. The differences between D-Link and other systems, such as communication system, tactical Internet, and C^3I system are discussed also in this paper.
