基于三维地理环境的雷达网探测威力计算与实时空情态势显控

Implementation of radar detection area generation and real-time flyers visualization control based on 3D geography scene

基于三维GIS引擎,利用高清卫星图片、高程数据、各种地图要素矢量数据等信息,构建了包含地形、地貌等信息的逼真三维地理环境,实现了高效、灵活的图上查询、量测、分析、标绘等功能.基于XDraw剖面可视域分析算法,实现了地形和电磁干扰条件下雷达三维探测威力范围和二维高度层切片的实时计算与显示.以实装指挥信息系统为数据源,根据雷达情报诸元参数确定出空情目标性质后,利用相应三维模型实现了目标的逼真显示,并基于线性拟合算法实现了动目标模型的平滑控制.开发实现了三维战场态势显控系统,验证了所提方案的有效性和良好的效果.

Based on 3D GIS engine,a vivid 3D geography scene including abundant and accurate terrain and physiognomy is implemented with the full use of distinct satellitic images,digital elevation model(DEM) data and foundational vectorial GIS layers.Then the efficient and flexible measurement,analysis,query and marking on the 3D geography scene are implemented.Based on the improved radar equations and the XDraw algorithm,which is an approximative viewshed analysis method,the real-time generation and display schemes of 3D radar detection area and 2D slices on specified certain altitude are presented.The real flyers data are received from the C4I(command,control,communication,computer,intelligence,surveillance,reconnaissance) system,and based on the attributes of flyers,the relational 3D graphical models are displayed.Then the smooth motion control of flyer models are implemented by the linear fitting algorithm.The 3D battlefield status system is well developed,which validates the good performance of the new presented schemes above.