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For the requirements of large-scale real-time vehicle GPS data map matching in application, this paper proposes a parallel algorithm for road matching based on multi-core and MPI(Massage Passing Interface). Several basic questions for road matching are discussed, such as maps storage structure, matching elements, and alternative road chain searching. Then, based on multi-core and MPI computing platform,...
Walking is one of the most elementary traffic modes nowadays. The more frequently the road network changes, the more urgent the desire of pedestrian navigation becomes. To realize pedestrian navigation, pedestrian network model must be established first. In this paper, we propose the rules how to build pedestrian network, and description of the logic model and attribute. Based on these theories, we...
The real-time vehicle navigation under wireless environment is difficult for practical use due to the bottleneck of the cellular network wireless bandwidth. We applied the P2P wireless network into the real-time vehicle navigation system, and that turns out to be sound in efficient data transfer. The data transfer strategies include data pre-downloading which aims to smooth the navigation map display,...
Although high-resolution remote sensing (RS) images can supplement the reference map's deficiency in LADAR (Laser Radar) referenced navigation system over plain area, their different imaging modes still leave great errors' introduction into the positioning process. As positioning is commonly accomplished by matching the edges extracted as the obvious terrain characteristics, exploring automatic procedure...
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