Study on Data Model of Battlefield Situation Information
Yajun Zhang · Jisuanji fangzhen · 2009
The battlefield situation information's data model is the foundation of battlefield situation visualization system,which is researched at the beginning stage,and therefore it needs urgently studying systematically. The idea of physical and logical data model was put forward,which divided the battlefield situation information's data model into two levels. By dividing the database's architecture into three components:basic tables,controlling tables and dynamic tables,an integrative physical data model for storing static and dynamic situation objects was designed,which has the characteristics of supporting dynamic extending and multi-user's simultaneous access,etc. By bringing forward and quoting the conception of snapshot which eliminates the distinction between static object and dynamic object at the logical level,an efficient logical data model with the same memory structure for static and dynamic object was designed. The several key technologies were discussed on implementing the data model and developing a system,and the model were validated in practical project and application to be feasible and logical.