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本文为美国麻省理工学院(作者:Allen Ka Lun Miu)的硕士论文,共60页。
本论文描述了CricketNav的设计与实现,这是一个室内移动导航系统,使用MIT计算机科学实验室开发的Cricket室内位置传感基础设施作为Oxygen项目的一部分。CricketNav通过在地图上显示导航箭头来引导用户到达目的地。当CricketNav引导用户通过动态计算的路径时,导航箭头的方向和位置都会实时更新。为了支持CricketNav,我们为Cricket定位系统开发了一个模块化的数据处理架构,以及一个访问位置信息的API。在Cricket中实现了一种最小二乘位置估计算法,并对其性能进行了评价。我们还开发了丰富而紧凑的空间信息表示,以及从建筑CAD平面图中提取这些信息的自动化过程。
This thesis describesthe design and implementation of CricketNav, an indoor mobile navigation systemusing the Cricket indoor location sensing infrastructure developed at the MITLaboratory for Computer Science as part of Project Oxygen. CricketNav navigatesusers to the desired destination by displaying a navigation arrow on a map.Both the direction and the position of the navigation arrow are updated inreal-time as CricketNav steers the users through a dynamically computed path.To support CricketNav, we developed a modular data processing architecture forthe Cricket location system, and an API for accessing location information. Weimplemented a least-squares position estimation algorithm in Cricket and evaluatedits performance. We also developed a rich and compact representation of spatialinformation, and an automated process to extract this information fromarchitectural CAD floorplans.
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