| 分布式移动数字地球系统的设计与实现 |
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| 引用本文： | 李文航,汪国平,于萍,陈毅松.分布式移动数字地球系统的设计与实现[J].地理与地理信息科学,2009,25(5). |
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| 作者姓名： | 李文航 汪国平 于萍 陈毅松 |
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| 作者单位： | 1. 北京大学信息学院计算机系,北京,100871
2. 新乡学院管理学院,河南,新乡,453000 |
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| 基金项目： | 国家863计划资助项目，中国博士后科学基金面上项目 |
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| 摘 要： | 提出了在移动设备上实现数字地球的框架模型,针对移动数字地球对网络流量、计算能力和存储能力的限制,框架增设中间件服务器,由其完成从分布式地理数据服务器集群获取数据并渲染虚拟场景的过程,渲染结果以流媒体为载体反馈给移动设备.依此框架开发出原型系统,测试结果表明,在实现远超移动设备计算和存储能力的虚拟场景的同时,可有效降低构建移动数字地球的网络流量,并随着移动网速的进一步提升,可达实时交互控制.
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| 关 键 词： | 移动数字地球 分布式 自适应网络 |
Design and Implementation of Distributed Mobile Digital Earth System |
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| LI Wen-hang,WANG Guo-ping,YU Ping,CHEN Yi-song.Design and Implementation of Distributed Mobile Digital Earth System[J].Geography and Geo-Information Science,2009,25(5). |
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| Authors: | LI Wen-hang WANG Guo-ping YU Ping CHEN Yi-song |
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| Institution: | LI Wen-hang1,WANG Guo-ping1,YU Ping2,CHEN Yi-song1(1.School of Electronics Engineering , Computer Science,Peking University,Beijing 100871,2.School of Management,Xinxiang College,Xinxiang 453000,China) |
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| Abstract: | One framework of distributed Mobile Digital Earth was proposed.To overcome constraints such as massive network traffic,higher computation and storage demands,middle-ware servers were plugged in.Those constraints mentioned above were done on network and middle-ware servers instead of mobile instruments,with a result of stream media sent on to mobile instrument which is smaller on data amount and less demanding on the computing power.Based on the framework,one prototype system was achieved.Results show that p... |
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| Keywords: | mobile digital earth distributed framework self-adaptive network |
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