Navigation positioning correction method and device, and positioning navigation system

A technology of navigation positioning and deviation correction device, which is applied in the field of global positioning and navigation, and can solve the problems of low GPS positioning accuracy and inability to accurately match maps

Active Publication Date: 2011-09-07
BEIJING SUPERMAP SOFTWARE CO LTD
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a navigation and positioning correction method based on the global p

Method used

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  • Navigation positioning correction method and device, and positioning navigation system
  • Navigation positioning correction method and device, and positioning navigation system
  • Navigation positioning correction method and device, and positioning navigation system

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Embodiment Construction

[0059] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0060] refer to figure 1 , which shows the flow of the first embodiment of the navigation and positioning deviation correction method based on the global positioning system of the present invention, which specifically includes the following steps:

[0061] Step S101: receiving the current positioning point acquired by the global positioning system;

[0062] Step S102: Select the road with the highest weight factor TWS as the matching road of the current positioning point;

[0063] This preferred embodiment uses a mixed weight factor TWS as the basis for road selection, mainly considering the degree of conformity between the current direction of travel and the direction of each road WS H , the proximity between the current anchor...

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Abstract

The invention provides a navigation positioning correction method and a navigation positioning correction device based on a global positioning system, and a positioning navigation system. The method comprises the following steps of: receiving a current positioning point acquired by the global positioning system; selecting a road with the highest weight factor as a matching road of the current positioning point, and determining that a parameter of the weight factor comprises an accordance degree of a current travelling direction and a direction of the road, and an approaching degree of the current positioning point and the road; and taking a projection point of the current positioning point to the matching road as a map matching point of the current positioning point. By the invention, an accurate matching point on a map is obtained by calculating the accordance degree of the current travelling direction and the direction of the road, and the approaching degree with each road, and projecting to the road with the highest matching degree. Compared with the conventional method for matching based on a distance only, the invention has higher precision and adaptability, and can solve thepositioning problem under complex situations, such as vehicle turning, multi-intersection selecting, main and auxiliary road selecting and the like.

Description

technical field [0001] The present invention relates to the technical field of global positioning and navigation, in particular to a navigation positioning deviation correction method and device based on a global positioning system, and a positioning and navigation system. Background technique [0002] In recent years, positioning and navigation systems, especially vehicle navigation systems, have become more and more widely used, and navigation systems based on Global Positioning System (Global Position System, GPS) positioning have almost become the standard configuration of luxury cars. For car navigation systems, the basis and core of vehicle positioning and navigation, but the existing car navigation systems generally only use GPS positioning, and then project the positioning points to the matching road to take the feet as the matching points of the map. Due to the relatively large GPS positioning error, when the road conditions are relatively complex, such as road inte...

Claims

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Application Information

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IPC IPC(8): G01C21/30
Inventor 马海波李楷陈明亮李少杰
Owner BEIJING SUPERMAP SOFTWARE CO LTD
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