摘要
为了构建一个大到整个太阳系,小到地面上的一个地面站,以及地面站周围的地形,同时能够对空间目标编目、空间环境等各类态势数据进行统一展示的空天地一体化态势表达引擎,在分析了各类感知数据特点的基础上,对各类空间态势感知数据进行统一的时空、几何建模;利用直线和球面相结合的插值方式进行视点的跨尺度切换;给出了一体化框架下地形表达所涉及的坐标转换关系;最后采用以视点为原点的局部坐标下的目标绘制与动态设定三维引擎透视投影参数的双重方法进行抖动消除。最终实现了空天地整个态势场景的跨尺度无缝切换和各类态势数据的精细化表达,取得了较好的表达效果,为后续的空间态势数据分析与应用通用平台的构建奠定了基础。
How to build a space-air-ground situation express engine was researched. After analyzing the characteristics of various types of sensory data, all the space situational awareness data unified space-time, geometric visualized; a combination of straight lines and ball surface interpolation method was utilized for cross-scale viewpoint switching; the coordinate transformations relationship was given, which is involved in the integrated framework topographic expression; finally drawing objects in the local coordinate, whose the origin is the viewpoint and setting dynamically the parameters of the perspective projection of three-dimensional rendering engine were adopted to solve jitter problem. Ultimately the across scale switch of space-air-ground situation scene and the seamless expression of various situational data were achieved. The expression results are good, which build the foundation for constructing a common platform for the analysis and application of space situational data.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2014年第7期1570-1576,1606,共8页
Journal of System Simulation
基金
国家863计划项目(2012AA7035059J)
关键词
空天地一体化
态势表达
跨尺度切换
地形绘制
抖动消除
space-air-ground
situation expression
large-scale switch
terrain rendering
anti-jitter
