虚拟航空摄影测量实验系统的设计与实现

随着网络教学的兴起,虚拟现实技术用于实验教学,成为强化实验室建设、改革实验教学手段的一个重要发展方向。介绍虚拟建模和开发软件,并以我院仿真模拟摄影测量与遥感实验室为原型,采用VRML软件为主,三维建模软件SkecthUP和3Ds Max为辅,阐述系统设计与实现的具体过程,构建虚拟航空摄影测量实验系统。该系统主要包括虚拟地形地貌沙盘(虚拟校园模型和虚拟栅格地形)、虚拟全数字摄影测量工作站模型、虚拟无人机和控制轨道动态模型,以及虚拟实验室场景。具有数字摄影测量工作站动态操作演示、无人飞机航空摄影测量操作演示,以及实验室参观展示等功能。研究成果无实体实验室的时空限制,有利于学生开展自主学习,有效地提高摄影测量实验教学质量,其对于虚拟实验系统的研发具有一定的借鉴意义。

Design and implementation of virtual aerial photography measurement experiment system

With the development of network teaching , virtual technology teaching for experimental teaching ,which can strengthen the laboratory construction and reforming experiment teaching methods ,is an important development direction .This paper introduces the virtual modeling and development software , w hich elaborates the specific process of the virtual aerial photography measurement system design and implementation and builds the virtual aerial photography measurement system by using VRML software primarily with three‐dimensional modeling software SkecthUP and 3Ds Max .The system mainly includes virtual landform sand table(virtual campus model and virtual grid terrain) ,virtual digital photogrammetric workstation model , virtual unmanned aerial vehicle and control orbit dynamic model , and the virtual laboratory . It realizes virtual aerial photography measurement system’s main function :digital photogrammetric workstation dynamic demonstration operation ,unmanned aircraft aerial survey operation demonstration and visit to laboratory and demonstration and so on .T he result of the study has effectively improved the photogrammetry experiment teaching quality because it has no physical laboratory space and time limit w hich is helpful for students to develop independent learning . It has a certain reference significance for the virtual experiment system for research and development .