论文将围绕专题军事地理数据库引擎的一些相关问题，对它的数据模型、空间索引结构、系统设计及开发过程进行研究。
The paper discusses several problems based upon SMDE, and do some research on data model spatial index structure, system designings and the process of exploiture.
该方案首先将矩形地理空间进行租网格划分建立多级网格索引，然后针对每个小网格建立基于R树的空间索引。
A rectangular region of geography is roughly partitioned in several times to multilevel sub-regions, in which spatial index of R-tree has been constructed.
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