【作者】 陈海汉；

【导师】 刘因；

【作者基本信息】 合肥工业大学 ， 矿物学、岩石学、矿床学， 2009， 硕士

【摘要】 电子沙盘是相对于传统的实物沙盘模型而言的,也称为数字沙盘或虚拟沙盘。它是集计算机、地理信息系统、虚拟现实、可视化技术和多媒体技术于一体的高新技术产品,为使用者提供一个实时、可交互操作的虚拟现实环境。电子沙盘作为可交互操作的实时虚拟现实环境,是一种既具有传统沙盘的特点,又集成了多种高新技术的产品,在军事、房地产、水利工程、消防等领域都得到了一定的应用。航迹规划是指在特定约束条件下,寻找运动体从初始点到目标点满足某种性能指标最优的运动轨迹。它的研究对象包括飞行器、水面舰艇、地面车辆以及机器人。军用飞行器航迹规划是以实现地形跟随/地形、威胁回避飞行为目的的新一代低空突防技术,其目的就是要利用地形和敌情等信息,规划出生存概率最大的飞行器突防轨迹。在防空技术日益完善的现代战争中,航迹规划是提高飞行器的作战效能,实施远程精确打击的有效手段。本文首先分析沙盘制作技术的变化与发展,即从传统的实物沙盘向现代的电子沙盘转变;提出了电子沙盘制作的技术方案,并介绍了数据处理、地形模拟与要素匹配等关键技术;然后以数字高程模型(DEM)和卫星遥感图像为数据源,在ArcGIS平台下实现了该地区电子沙盘的制作,最后在航迹规划中可以用精确的电子沙盘来代替真实地形,从而完成将高程数据库加载到航迹规划中的仿真,实现地形跟随/地形、威胁回避的功能,为决策者进行决策提供参考。更多还原

【Abstract】 Electronic sand table, some called digital sand table or virtual sand table, is contrasted with traditional material sand table model. Unlike material sand table, electronic sand table is a new high-tech product with integration of computer application, geographical information system, virtual reality and multimedia. It can give users a real-time and interactive operation circumstance. With the development of computer technology, material sand table is now gradually substituted by electronic sand table.Path planning is to search the best flight track from start point to target point that can maximize survival probability and minimize sail distance according to terrain and enemy’s situation and some other limits. The airplane’s battle area is always very huge, so the path planning for the airplane plays an important role in completing mission. It is the key technology of the airplane mission planning system and the technology generate an optimal track to satisfy the airplane machine performance and war field environment under special, restrict condition.This paper not only introduces the design and realization scheme of the electronic sand table, but also presents the key technique of the technical scheme for the electronic sand table, such as data processing, terrain modeling, feature matching. What is more, based on digital elevation model (DEM) and satellite remote sensing image, we made the electronic sand table using the platform of ArcGIS. Finally, we can use the precise electronic sand table to represent the real surface features in the path planning and realize the function of Terrain Following/Terrain Avoidance and Threat Avoidance.更多还原