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ISPRS Int. J. Geo-Inf. 2016, 5(4), 53; doi:10.3390/ijgi5040053

A Novel Dynamic Physical Storage Model for Vehicle Navigation Maps

1
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China
2
SuperMap Software Co. Ltd., Beijing 100015, China
*
Authors to whom correspondence should be addressed.
Academic Editors: Georg Gartner, Haosheng Huang and Wolfgang Kainz
Received: 20 February 2016 / Revised: 11 April 2016 / Accepted: 18 April 2016 / Published: 22 April 2016
(This article belongs to the Special Issue Location-Based Services)
View Full-Text   |   Download PDF [3688 KB, uploaded 22 April 2016]   |  

Abstract

The physical storage model is one of the key technologies for vehicle navigation maps used in a navigation system. However, the performance of most traditional storage models is limited in dynamic navigation due to the static storage format they use. In this paper, we proposed a new physical storage model, China Navigation Data Format (CNDF), which helped access and update the navigation data. The CNDF model used the reach-based hierarchy method to build a road hierarchal network, which enhanced the efficiency of data compression. It also adopted the Linear Link Coding method, in which the start position was combined with the end position as the identification code for multi-level links, and each link traced up-level links consistently without recording the array of identifications. The navigation map of East China (including Beijing, Tianjin, Shandong, Hebei, and Jiangsu) at 1:10,000, generated using the CNDF model, and the real time traffic information in Beijing were combined to test the performance of a navigation system using an embedded navigation device. Results showed that it cost less than 1 second each time to refresh the navigation map, and the accuracy of the hierarchal shortest-path algorithm was 99.9%. Our work implied that the CNDF model is efficient in vehicle navigation applications. View Full-Text
Keywords: dynamic navigation maps; physical storage format; reach-based hierarchical network; linear link coding dynamic navigation maps; physical storage format; reach-based hierarchical network; linear link coding
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, S.; Zhong, E.; Li, K.; Song, G.; Cai, W. A Novel Dynamic Physical Storage Model for Vehicle Navigation Maps. ISPRS Int. J. Geo-Inf. 2016, 5, 53.

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