空基电子系统三维显控框架设计与实现

Design and Implementation of 3D Aero Display and Control System for OSG

当前广泛用于空基任务电子系统的二维态势显示只能显示单一维度信息,并且当态势中存在大批量目标时,无法表达目标在高程空间的分布,目标重叠严重,不能有效识别目标。三维场景渲染技术已经广泛用于场景仿真、商业游戏、虚拟现实等领域,但针对空基系统态势显示的研究却显得滞后。为此,在对比论述三维态势显示相对于二维优点以及研究开源三维引擎OpenSceneGraph的基础上,针对空基任务电子系统的特点,设计了一套三维地理信息渲染引擎和态势显控框架。该引擎支持三维地理信息渲染、矢量和高程数据解析、模型加载、场景漫游,三维基础图元绘制、军标绘制、航线规划、三维量算、三维交互等,能够支撑三维显示控制系统的开发。该框架突破了项目中三维只能用来仿真演示的现状,实现了对空基任务电子系统各平台业务的实时消息驱动、情报显示和交互响应,实现了态势显控从二维向三维的转变。

2D display and control is used to be main way of presenting air situation,but when there exists plenty of overlapping items,it＇ s difficult to clearly distinguish useful targets. 3D graph rendering technology is widely applied in scenario emulation,business games,vir- tual reality and so on,but few research has been conducted in aero dis-ctd system. Therefore,on the basis of discussion of advantages of 3D dis-ctrl system compared with 2D method and research of OpenSceneGraph,in order to implement 3D aero dis-ctrl system,a 3D dis -ctrl framework based on OSG has been designed. It supports 3 D geography rendering, vector and elevation data parsing, model loading and scene roaming, graph and symbols painting as well as 3D airline plotting ,3D manipulation,3D measurement and interaction. By this framework,3D-tech can not only be used for emulation,but also be available for constructing actual data-driven aero 3D dis-ctrl sys- tems.