Vehicle positioning system

A vehicle positioning and vehicle technology, which is applied to satellite radio beacon positioning systems, radio wave measurement systems, instruments, etc., can solve the problems of single satellite positioning and positioning accuracy and poor applicability, and achieve the effect of improving vehicle positioning accuracy.

Pending Publication Date: 2019-01-18
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention discloses a vehicle positioning system, which solves the disadvantages of poor positioning accuracy and poor applicability of a single satellite positioning or a single local vision unit, uses satellite positioning to improve efficiency, and then integrates visual local positioning to improve positioning accuracy

Method used

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] The vehicle positioning system disclosed in the present invention includes a high-precision map module 2, a satellite positioning module 1, an inertial and wheel speed measurement module 9, a visual local positioning module 10 and a fusion module 8; the visual local positioning module includes a camera 3 and a lane environment detection module 4. Distance measurement module 5 , map association module 7 and optical flow trajectory module 6 .

[0026] During vehicle operation,

[0027] The satellite positioning module periodically obtains vehicle satellite positioning information, and the inertial and wheel speed measurement module obtains the vehicle satellite positioning information of the previous cycle from the satellite positioning module, and calculates the vehicle track information through the inertia of the vehicle in six directions and the wheel speed wit...

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Abstract

The invention discloses a vehicle positioning system, which comprehensively utilizes a high-precision map module, a satellite positioning module and a visual local positioning module to solve the defects of poor precision and applicability of single satellite positioning or single local visual positioning, efficiency is improved by satellite positioning, and visual local positioning is fused to improve positioning precision.

Description

technical field [0001] The invention belongs to the field of automobile automatic driving, and in particular relates to a vehicle positioning system. Background technique [0002] The automatic driving system can automatically control the operation of the vehicle. In specific scenarios, it can realize functions including automatic driving, autonomous lane changing, and automatic parking to ensure driving safety while improving driving experience and comfort. In the field of autonomous driving technology, the core problem is to solve the problem of precise vehicle positioning. High-precision positioning is the basis for realizing automatic driving and the prerequisite for ensuring accurate decision-making and reaching the destination of autonomous vehicles. [0003] There are two types of vehicle positioning systems in the prior art. One is the Global Navigation Satellite System (GNSS). Due to the influence of the atmosphere on the satellite ranging error, the accuracy of th...

Claims

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Application Information

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IPC IPC(8): G01S19/45
CPCG01S19/45
Inventor熊周兵
OwnerCHONGQING CHANGAN AUTOMOBILE CO LTD