Patent ID: 6915205

Claim:
An apparatus for detecting location of a movable body in a navigation system, the apparatus comprising: a map data detector for detecting a width of a road, road linear information, and map information of a region corresponding to a location information in an external digital map storage on the basis of location information of the movable body, said location information being transmitted by sensors sensing location coordinates and traveling direction information of the movable body; a memory for storing said width of the road, road linear information, and map information detected from the map data detector; a filter for computing an optimum location information of the movable body including the width of a road and the road linear information included in said map information on the basis of the location coordinates and traveling direction information of the movable body transmitted by said sensors; and a map-matching unit for receiving the optimum location information of the movable body from the filter and correcting the optimum location information by matching the optimum location information and the map information stored in the memory.