| 摘要 |
PROBLEM TO BE SOLVED: To provide a map matching method by which the occurrence of a map matching mistake can be prevented certainly even when a frontage road runs in parallel with the running road of a vehicle. SOLUTION: This map matching method is used for navigation system for correcting the location of the vehicle on the running road by performing map matching. Virtual links A1-A3 of the number corresponding to the width of a road or the number of lanes of the road are supposed and the optimum link is found by performing map matching by using the virtual links A1-A3 as links to be subjected to map matching. When the optimum link is one of the virtual links A1-A3, the location of the vehicle is corrected on the road corresponding to the virtual link. It is also possible to use only the outside virtual link as the link to be subjected to map matching when a plurality of virtual lines exists. COPYRIGHT: (C)2004,JPO&NCIPI |
