便携式导航系统PND的设计与实现

【作者】 王玉翔；

【导师】 张睿；

【作者基本信息】 复旦大学 ， 软件工程， 2008， 硕士

【摘要】 消费者对GPS(全球定位系统)导航设备的需求正在高涨,尽管目前导航设备民用消费市场仍然以车载导航应用为主,但个人休闲用导航设备所占比例也有显著增长,而汽车导航市场从2001以来,也从内置式车载导航设备向手持式个人便携导航设备PND(Personal Navigation Devices)转移,这种手持设备既能随身携带,也可以在车内使用。本文给出了一个PND系统的硬件和软件的设计方案。文章结合嵌入式设计的特点,基于这个系统所要实现的功能,选择硬件和操作系统,达到这个设备价格较便宜,体积较小,便于携带的特点,以解决传统车载导航设备不利于随身使用的问题。本文重点阐述了在这个设备上导航软件系统的功能设计和实现,针对地图浏览、地图匹配、路径规划等核心算法提出了分析和讨论,给出了实现的方法,突出专业性和简单易用的特点。同时结合导航地图数据库的设计原理,以“神达C720导航软件设计”作为实例,分析了这些设计的性能。本文在研究此课题时充分考虑目前市场竞争对手的情况,以及整体方案的成本,设计的方案具有一定的市场成熟度,目前已经有基于这个方案的设备转化成产品投入市场。更多还原

【Abstract】 Utilization of GPS (Global Positioning System) navigation devices is booming remarkably at the present time. Although the civil navigation devices market is dominated by GPS vehicular navigation systems nowadays, the proportion of personal portable navigation devices is rising dramatically as well. Since 2001, the vehicular navigation market has been transferred from the devices mounted inside cars to the PNDs (Personal Navigation Device).A design project of PND system including the hardware and the software is provided in this dissertation. The PND designed utilizes the technologies of embedded systems and has advantages of lower cost, smaller size and easier-carrying, which could solve the problems that the vehicular navigation devices are too heavy to be carried on body.The author describes in detail the design theories and the realization methods of the navigation software system. The emphases are on the analysis and discussion about the core algorithm on map browsing, map match and route planning etc. The methods proposed in paper integrate the professionalism and the advantages of operating easily. The navigation software design of Mio C720 is introduced as example to analyze the design capability.Considering the competitors’ circumstances and the design cost, the project in this dissertation occupies a certain degree of market maturity. Productions based on this project have already been marketed.更多还原