Unlock instant, AI-driven research and patent intelligence for your innovation.

Road magnetic field characteristic based geomagnetism positioning method

A positioning method and geomagnetic technology, applied in the direction of ground navigation, navigation calculation tools, etc., can solve the problems of the update method of the geomagnetic reference map, the different search and positioning methods, the system cost requirements, the poor measurement accuracy of the magnetic sensor, and the difficulty in meeting the indoor requirements, etc. Real-time graph rescaling, performance improvement, and the effect of ensuring reliability

Active Publication Date: 2018-01-23
北京麦钉艾特科技有限公司
View PDF3 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above analysis, the present invention aims to provide a geomagnetic positioning method based on the characteristics of the road magnetic field, which solves the problem of indoor application caused by different geomagnetic reference map update methods, search and positioning methods and different system cost requirements due to the different movement forms and laws of the carrier. The measurement accuracy of the inertial navigation and magnetic sensors is poor and it is difficult to meet the indoor requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Road magnetic field characteristic based geomagnetism positioning method
  • Road magnetic field characteristic based geomagnetism positioning method
  • Road magnetic field characteristic based geomagnetism positioning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principles of the present invention.

[0050] A specific embodiment of the present invention discloses a geomagnetic positioning method based on road magnetic field characteristics.

[0051] The flow chart of the geomagnetic positioning method is shown as figure 1 shown. Include the following steps:

[0052] Step S1, establishing a reference map database of road magnetic field characteristics. The initial data of the reference map database comes from the actual measurement of the on-site road in advance. The actual measured data is divided into six parts:

[0053] 1) Point spacing of reference map data: that is, the actual distance between two adjacent points;

[0054] 2) Number of ro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a road magnetic field characteristic based geomagnetism positioning method. The method includes: establishing geomagnetism reference map database on the basis of indoor magnetic field conditions, acquiring geomagnetism data collected by a geomagnetism positioning terminal in actual motion to establish a geomagnetism real-time map, subjecting the geomagnetism real-time mapto variable-scale zooming, performing position searching and geomagnetism correlation matching in a given geomagnetism reference map, performing correlation judgment on a matching result, and selecting an optimal result to output. Therefore, the geomagnetism positioning performance is effectively improved, geomagnetism positioning reliability is guaranteed, the geomagnetism reference map is updated automatically and continuously, and cost increasing and troubles of artificial onsite retesting are avoided.

Description

technical field [0001] The invention relates to the technical field of positioning, in particular to a geomagnetic positioning method based on road magnetic field characteristics. Background technique [0002] The geomagnetic field and the magnetic field generated by artificial buildings are collectively referred to as the environmental magnetic field. This part of the environmental magnetic field is relatively stable with time, and its strength (size) and direction change with the change of space position. It provides a natural coordinate system for the measurement of position information. The measurement of the position of the moving body can be realized by utilizing the characteristics of the environmental magnetic field being correlated and changing with the position. [0003] Geomagnetic positioning technology is an effective auxiliary positioning method. Its basic principle is to pre-store the geomagnetic reference map (reference map) of the aircraft's working area i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/08G01C21/20
Inventor 王刚刚申志飞李素敏
Owner 北京麦钉艾特科技有限公司