为建模与仿真建立空间参考模型

空间参考模型不仅是空间定位和定向的基础，而且对于取得建模与仿真的高度互操作性和可重用性也有着重要的意义。该文首先分析了建模与仿真的发展对建立空间参考模型的需求，然后依据需求，然后依据需求的原则建立了空间参考模型，同时也讨论了坐标变换的原理，策略和算法，最后设计和实现了相应的软件系统，包括系统的体系结构，坐标变换的流程，主要数据结构以及主要函数的和用户接口。

Eestablish a Spatial Reference Model for Modeling and Simulation

Spatial Reference Model (SRM) is not only the basis of spatial locating and orientation, but also a significant factor for achieving the high interoperability and reuse of modeling and simulation. This paper first analyzes the requirements of establishing an SRM for the development of modeling and simulation. Then an SRM is established according to the principles of the requirements. Also the principles, strategies and algorithms of coordinate conversions are discussed and the corresponding software systems are finally designed and implemented including the architecture, the procedures of conversions, main data structures, important functions and users' interface.