METHOD FOR DETECTING ROAD POSITION OF CAR IN MULTIFORMATION ROAD

摘要

ABSTRACT OF THE DISCLOSUREThe present invention provides a method for identifying a position of a vehicle on a multi-layer road, by which it is possible to judge whether the vehicle is running on anupper layer or a lower layer of the multi-layer road without using additional new devices orparts on a navigation system. In order to identify a position of a vehicle on a road whenthe vehicle is running on a multi-layer road, prediction can be made to some extent by determining the visible range to see GPS satellite in the sky is wide or narrow. With thepurpose of processing the problem quantitatively, a position measuring ratio is defined as follows: Position measuring ratio (%) = (Traveled distance where GPS positionmeasuring is effective) x 100/(Traveled distance). By this position measuring ratio, it is possible to identify the position of the vehicle on the road.