空天地一体化态势表达的视点控制方法  

Research on viewpoint control in space-air-ground situation expression engine

作　　者：施群山[1] 蓝朝桢[1,2] 徐青[1] 周杨[1] 吕亮[1] 

机构地区：[1]信息工程大学地理空间信息学院,郑州450052 [2]北京理工大学宇航学院,北京100081

出　　处：《计算机应用》2014年第A02期264-268,共5页journal of Computer Applications

摘　　要：空天地一体化态势表达引擎具有数据类型多、空间尺度和距离变化大等特点,这些特点对视点控制方法提出了新的要求。针对这些特点,设计了一种目标相关、分类分级的视点控制方法,实现了各类目标、地面地形的快速自然浏览;同时为了增加浏览的动态效果,使用了带惯性的视点控制方法;采用直线插值和球面插值技术,实现了空天地整个态势场景的跨尺度无缝切换。实验表明:采用该视点控制方法构建的空天地一体化态势表达引擎能够很好地满足用户交互操作的需求。Space-air-ground situation expression engine is characterized of plenty of data types, spatial scale and distance varying to a great extent etc., these features proposed new requirements for viewpoint control method. For these characteristics, a related to target, classification and grading viewpoint control method is designed to browse various goals,natural ground terrain quickly; in order to increase the dynamic browsing effect, the inertial viewpoint control methods is used;linear and spherical interpolation techniques are adopted to achieve the seamless viewpoint switching in space situation scene.Experiments show that, the space-air-ground situation expression engine using this viewpoint control method can well meet the needs of user interaction.

关 键 词：空天地一体化 态势表达 目标相关 分类分级 视点控制 视点切换 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]