Navigation method, electronic map system and navigation device

Abstract

The invention provides a navigation method, an electronic map system and a navigation device. The method comprises the steps: confirming a road which is associated with an information point; obtaining an associating relationship between the information point and the road which is associated with the information point; confirming a starting point of a navigation path according to an associating relationship between a starting information point and a road which is associated with the starting information point; confirming the end point of the navigation path according to an associating relationship between a destination information point and a road which is associated with the destination information point; obtaining a navigation path from the starting information point to the destination information point according to the starting point and the end point of the navigation path; and navigating according to the navigation path. The scheme adopted by the invention can accurately confirm the starting point of the navigation, and the most important is that the navigation arriving at the destination accurately can be realized.

Description

technical field [0001] The invention relates to the technical field of navigation based on an electronic map, in particular to a navigation method, an electronic map system and a navigation device capable of accurately determining the starting point of navigation and, more importantly, accurately reaching the destination. Background technique [0002] In the existing navigation technology, there must be a road network in the navigation electronic map to realize the planning of the navigation route, thereby realizing the navigation. [0003] To guide the user from the current point to the destination, the navigation system first needs to determine a certain point on the road that the current point can reach, and a certain point on the road that the destination can reach, and then use the certain point on the road that the current point can reach as the The starting point of the navigation path is a certain point on the road that can be reached by the destination as the end po...

AI Technical Summary

Problems solved by technology

[0010] like figure 2 As shown, the user needs to reach information point A (that is, information point A as the destination), the situation is as follows: road L1 and road L2 interchange, information point A can only reach road L2 actually, but if the existing technology is used at this time, then The navigation system calculates the distance between information point A and the surrounding roads (road L1 and road L2). The distance between information point A and road L1 is shorter than the distance between information point A and road L2, so the navigation system will guide the user to the road The position of point 1 on L1 is not guided to point 2 on road L2. In fact, information point 1 cannot reach point A due to some obstacles between point A and information point 1, so it does not guide users to arrive Information Point A

[0011] Therefore, in the existing navigation technology, it is impossible to accurately guide the user from the current point to the destination.

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