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Method and device for position correction of navigation equipment

A technology of navigation equipment and equipment, applied in the field of navigation and positioning

Inactive Publication Date: 2018-01-02
北京红旗胜利科技发展有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the embodiments of the present application is to provide a method for correcting the position of navigation equipment, so that when the navigation equipment does not have GNSS satellite positioning correction for a long time and the inertial navigation positioning error continues to increase, the positioning accuracy of the navigation equipment will decrease, which cannot meet the needs. The problem

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  • Method and device for position correction of navigation equipment
  • Method and device for position correction of navigation equipment
  • Method and device for position correction of navigation equipment

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Embodiment Construction

[0042] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] Firstly, the existing position correction methods are described. Most of the existing position correction methods use GNSS position correction or other known point position correction. GNSS position correction requires satellite signals, and the positioning accuracy of navigation equipment will be reduced when the environment is affected. The method of correcting the position of a known point needs to measure the coordinates (latitude and longitude) of a large number of fixed points in advance, and when the navigation device passes the fixed point, the coordinates of the point are used for position correction. However, the disadvantages of this method are: 1. A large number of points need to be me...

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Abstract

An embodiment of the invention provides a navigation device position modification method which is characterized in that a navigation device has location accuracy and self position information. The method includes that the navigation device searches for a reference positioning device in the preset range, determines a target positioning device with the positioning accuracy higher than that of the navigation device, acquires reference position information of the target position device, and adopts the reference position information to modify the position information of the navigation device. By means of the method and device, the position information of the reference positioning device with higher positioning accuracy is utilized by the navigation device to modify the self position, and the self position of the navigation device can be modified even under the condition that the environment is affected.

Description

technical field [0001] The present application relates to the technical field of navigation and positioning, in particular to a method for correcting the position of a navigation device and a device for correcting the position of a navigation device. Background technique [0002] Inertial navigation technology is an autonomous navigation technology that calculates the position of the carrier through the angular velocity and velocity measured by the gyroscope and accelerometer. Many navigation shoes, navigation modules or navigation equipment are based on MEMS inertial navigation technology, and inertial devices based on MEMS technology are widely used due to their small size and low cost. [0003] Inertial navigation equipment will produce errors during use, including sensor measurement errors and frictionless iterative calculations, so navigation accuracy will continue to decrease. GNSS (Global Navigation Satellite System) is also a commonly used navigation method. GNSS ca...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
CPCG01C25/00G01C25/005
Inventor 白锋史鹏
Owner 北京红旗胜利科技发展有限责任公司