Variable importance degree-based vehicle real time positioning method

Abstract

A variable importance degree-based vehicle real time positioning method comprises the following steps: obtaining respective positioning data of a variety of positioning technology devices on a vehicle terminal, and determining the position covering domains of a variety of positioning technologies through the error degree of each of the positioning technologies; analyzing and calculating the importance degree of each of the position covering domains of the positioning technologies according to an importance degree process, and optimizing the error degrees of the positioning technologies with the change of the importance degree as feedback; and carrying out weighted average calculation with each of the importance degrees of the position covering domains as the weight of a composite position domain to obtain the real time accurate position of a target vehicle. The method fusing the variety of vehicle positioning technologies and using the each of the importance degrees of the position covering domains as the weight during weighted average calculation improves the positioning technology fusion rationality. The variable importance degree-based vehicle real time positioning method has the advantages of simple operation steps, strong real time, use in different environments, high positioning calculation accuracy, small calculation amount, suitableness for a variety of positioning devices in a vehicle network, easy popularization and wide application.

Description

technical field [0001] The invention relates to a technology for solving accurate vehicle positioning in the Internet of Vehicles, to be precise, relates to a real-time vehicle positioning method based on variable importance, and belongs to the technical field of vehicle positioning. Background technique [0002] In the Internet of Vehicles environment, vehicles obtain related services of the network by accessing heterogeneous wireless networks. At present, there are more and more related applications based on vehicle location (such as vehicle social network, vehicle navigation, vehicle wireless network access selection, etc.), which requires vehicle terminals to obtain more real-time and accurate location information. [0003] At present, the most commonly used vehicle positioning method is the Global Positioning System (GPS), although GPS positioning has its own advantages such as wide coverage, fast and accurate positioning, and all-weather positioning without occlusion. ...

AI Technical Summary

Problems solved by technology

The positioning method of WLAN mainly depends on the density of vehicles. In the case of sparse vehicles, the stability of vehicle networking is low, which will greatly reduce the accuracy of positioning.

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