HLA/RTI仿真框架中的坐标转换及其实现机制

为了保证分布交互仿真的互操作、可重用和时空一致性,应在仿真运行支撑环境(RTI)中提供不同仿真应用的坐标转换功能。文章首先分析了坐标转换的必要性,然后介绍了常用坐标系及其相互转换关系,最后探讨了HLA/RTI仿真框架中的坐标转换实现机制,重点解决了如何转换、何时转换、由谁转换、如何标示所用坐标系、如何调用坐标转换模块等问题,并建议在当前的对象模型模板(OMT)增加有关对象所用坐标系的说明。

Coordinate Transformations and Implementation Mechanism in HLA/RTI Simulation

In order to reuse simulation component ,ensure interoperability and time-space consistency in distributed in-teractive simulation,Run-Time Infrastructure(RTI )in High Level Architecture(HLA)should provide the function of coor-dinate transformations for different simulation applications.This paper analyzes the necessity of coordinate transformations firstly,and then introduces some common coordinate systems and coordinate transformations,and discusses its implemen-tation mechanism in HLA/RTI lastly,such as how and when to transform,who accomplishes transformations,and how to designate used coordinate system in messages and to invoke corresponding coordinate transformation module.Some advice on revising current Object Model Template(OMT )to describe the coordinate systems used by objects is proposed as well.