中文摘要：

了解指挥人员的决策过程是利用STA技术进行决策支持的前提。当前的STA研究虽然大多都注意到了STA功能在认知上的层次性，却忽略了STA过程上的层次渐进性。针对该问题，着眼于军事决策过程的层次性，提出了群体分析的概念及相应的功能模型，并进一步提出了基于群体分析的STA方法。该方法把对整个战场态势的理解分解为对各指挥层次的多个群体的理解，将STA过程分解为一个逐部分、逐层次进行的过程。该过程符合指挥人员的认知过程，能满足不同层次指挥人员不同粒度的认知需求，从而能更有效地支持STA系统的设计。

英文摘要：

The paper proposes concept of group analysis and associated functional model based on hierarchies of military decision process, and a STA method based on the group analysis is proposed further. Situation understanding of the whole battlefield is divided into understanding of multiple groups on each command hierarchy, which the STA process is divided step by step and part by part. It not only makes decision aiding efficiently but also makes design of military decision support system conveniently.