Vehicle positioning method and apparatus

A vehicle positioning and vehicle technology, which is applied in the direction of measuring devices, satellite radio beacon positioning systems, instruments, etc., can solve the problems of prolonged rescue time, inaccurate positioning of collided vehicles, and inability of rescuers to accurately find the collision location of vehicles, etc., to achieve a solution The effect of low vehicle positioning accuracy and shortened rescue time

Active Publication Date: 2018-10-12
SHANGHAI ONSTAR TELEMATICS
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Problems solved by technology

[0004] In view of this, the present invention discloses a vehicle positioning method and device to solve the problem of inaccurate positioning of the collision vehicle due to GPS positioning drift, so that rescuers cannot accurately find the vehicle collision location, resulting in prolonged rescue time

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  • Vehicle positioning method and apparatus
  • Vehicle positioning method and apparatus

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Embodiment Construction

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0054] The embodiment of the present invention discloses a vehicle positioning method and device to solve the problem of inaccurate positioning of a collision vehicle due to GPS positioning drift, so that rescuers cannot accurately find the collision location of the vehicle, resulting in prolonged rescue time.

[0055] Compared with the traditional method of determining the vehicle position by only performing GPS positioning on the vehicle once, the present inv...

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Abstract

The invention discloses a vehicle positioning method and apparatus. When a vehicle is in a running state within a preset time period before the collision time, the last first pre-collision positioningpoint before the vehicle encounters collision, the first collision positioning point when the collision occurs, and the first mobile terminal positioning point in a mobile terminal in the vehicle after the vehicle encounters the collision are converted into the corresponding latitude and longitude coordinates, and the center point position of the three positioning points is calculated by using atriangle center positioning method, and the road, nearest to the center point position is searched in a map road network, and the point, closest to the center point is determined from the nearest roadas the positioning point of the vehicle. The vehicle positioning method and apparatus can realize accurate positioning of the vehicle by collecting the last time of positioning information before thevehicle encounters collision, the positioning information when the collision occurs, and the positioning information of the mobile terminal in the vehicle after the vehicle encounters the collision,and by combining the road information, so as to effectively solve the problem that the vehicle positioning is low in accuracy because of GPS positioning drift.

Description

technical field [0001] The present invention relates to the technical field of vehicle positioning, and more specifically, to a vehicle positioning method and device. Background technique [0002] GPS (Global Positioning System, Global Positioning System) includes three parts: space GPS satellite constellation, ground monitoring system and GPS signal receiver. The basic principle of GPS positioning is: the satellite continuously transmits its own ephemeris parameters and time information. After the GPS signal receiver receives the information transmitted by the satellite, it can calculate the position of the receiver according to the triangular formula. Among them, GPS uses three satellites 2D positioning (longitude and latitude) can be performed, and 3D positioning (longitude, latitude and altitude) can be performed using four satellites. By continuously updating the received information of the GPS signal receiver, the moving direction and speed of the positioning point ca...

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Application Information

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IPC IPC(8): G01S19/14G01S19/42
CPCG01S19/14G01S19/42
Inventor 宋嵘蔡文卿
Owner SHANGHAI ONSTAR TELEMATICS
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