【作者】 李楷； 钟耳顺；

【Author】 LI Kai1,2,ZHONG Er-shun1 1 Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101 2 Graduate of School of the Chinese Academy of Sciences, Beijing, China

【机构】 中国科学院地理科学与资源研究所；

【摘要】 车载导航电子地图数据物理存储技术是车载导航应用的核心技术之一。作为物理存储技术研究的最终成果——车载导航电子地图数据物理存储格式(物理格式)的设计水平直接决定了导航系统的整体性能。由于物理格式涉及的业务范围广,计算环境复杂,性能要求苛刻。因此物理格式的研究是一项具有挑战性的工作。目前世界上仅有为数不多的能够投入实际应用的存储格式。本文在比较目前国际主要导航存储格式的基础上,提出了一种新的导航数据物理存储框架。在保证物理存储格式的高性能的基础上,在物理存储格式的可更新性方面进行了一定的改进。更多还原

【Abstract】 Technique for the digital map storage in vehicle navigation system is a kernel technique of the navigation system. The Physical Storage Format (PSF) as the product of research directly decides the performance of entire system. Considering the business of its covered, complicacy of computing environments and rigour of efficiency, the PSF research is an challenging work. Therefore, there are only few successful PSF in the world. This paper proposed a new framework of PSF. From the analysis of route planning, it shows that the new framework can fully satisfy the I/O requirement of embedded computing environment. Besides, this framework made some improvement on the structure to facility for data updating.更多还原