首先提出了为什么要研究 C4I系统体系结构问题 ,进而依据参考资料定义了“3A”及其研究内容。在描述了“3A”之间的简要关系之后 ,给出了对“3A”之间特殊关系的几点思考 ,并对所涉及到的军事需求、数据模型与数据库、数据模型与数学模型、数据模型与数据词典、强制性标准与系统的互操作性等问题进行了较为深入和透彻的分析 ,明确了 C4I体系结构研究中有关术语的内涵 ,加深了对“3A”的理解。最后指出 ,要想搞好我国的 C4I系统建设 ,必须开发共用操作环境和国防数据词典系统 First of all, it raises the question of why C4I system architecture should be studied and then defines “3A” and its research content based on reference materials. After describing the brief relationship between “3A”, some thoughts on the special relationship between “3A” are given, and the military requirements involved, data model and database, data model and mathematical model, data Model and data dictionary, compulsory standards and system interoperability issues such as a more in-depth and thorough analysis of the C4I architecture clarified the meaning of the terms, deepen the understanding of “3A”. Finally pointed out that in order to improve China’s C4I system construction, we must develop a common operating environment and national defense data dictionary system