A navigation system includes a positions network having a plurality of nodes, each corresponding to a segment in a road segments network. A branch is propagated from each node in the positions network based upon a dead reckon path of position vectors. Each of the branches in the positions network represents...http://www.google.fr/patents/US6108603?utm_source=gb-gplus-shareBrevet US6108603 - Navigation system using position network for map matching
Navigation system using position network for map matching