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Method and system for improving indoor inertial navigation precision

An inertial navigation and precision technology, applied in the field of navigation, can solve problems such as many sources of interference, restrictions on popularization of technology, expensive manual processing, etc., and achieve the effect of improving accuracy

Pending Publication Date: 2020-04-10
杭州十域科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, there are many sources of interference in the indoor environment, such as light, temperature, and sound, which will have a certain impact on the positioning effect during the navigation process.
[0009] (3) The current high-precision indoor positioning technology requires relatively expensive additional auxiliary equipment or a large amount of manual processing in the early stage, which greatly restricts the popularization of the technology
[0010] Therefore, how to improve the accuracy of indoor navigation based on inertial navigation in the case of low frequency of sensor system data collection in mobile phones (small programs) remains to be studied

Method used

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  • Method and system for improving indoor inertial navigation precision
  • Method and system for improving indoor inertial navigation precision
  • Method and system for improving indoor inertial navigation precision

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment provides a method for improving the accuracy of indoor inertial navigation, such as figure 1 shown, including steps:

[0040] S11. Collect the navigation data information of the indoor location;

[0041] S12. Establishing an error model corresponding to the information according to the collected navigation data information;

[0042] S13. Calculate the current location information through an inertial navigation algorithm; the inertial navigation includes inertial navigation parameters;

[0043] S14. Comparing the calculated current location information with the navigation data information in the established error model to obtain a comparison result;

[0044] S15. Correct the parameters of the inertial navigation according to the obtained comparison result.

[0045] This embodiment is described in detail using a WeChat applet in a mobile terminal. It should be noted that this embodiment is not limited to the application of WeChat applets, and this embo...

Embodiment 2

[0088] This embodiment provides a system for improving the accuracy of indoor inertial navigation, such as figure 2 shown, including:

[0089] Acquisition module 11, for collecting the navigation data information of indoor position;

[0090] Establishment module 12, is used for establishing the error model corresponding to described information according to the navigation data information collected;

[0091] Calculation module 13, is used for calculating the current position information by the algorithm of inertial navigation; Said inertial navigation includes the parameter of inertial navigation;

[0092] A comparison module 14, configured to compare the calculated current location information with the navigation data information in the established error model to obtain a comparison result;

[0093] The correction module 15 is configured to correct the parameters of the inertial navigation according to the obtained comparison result.

[0094] This embodiment is described ...

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Abstract

The invention discloses a method and a system for improving indoor inertial navigation precision, and relates to a method for improving indoor inertial navigation precision. The method comprises the following steps: S11, acquiring navigation data information of an indoor position; S12, establishing an error model corresponding to the information according to the acquired navigation data information; S13, calculating current position information through an inertial navigation algorithm; wherein the inertial navigation comprises parameters of the inertial navigation; S14, comparing the calculated current position information with navigation data information in an established error model to obtain a comparison result; and S15, correcting parameters of inertial navigation according to the obtained comparison result. Based on a dead reckoning method, an electronic compass, inertial navigation and map filtering are combined as a positioning technology, so that the precision of indoor navigation is greatly improved.

Description

technical field [0001] The invention relates to the field of navigation, in particular to a method and system for improving the accuracy of indoor inertial navigation. Background technique [0002] Indoor positioning refers to the realization of position positioning in the indoor environment. It mainly adopts wireless communication, base station positioning, inertial navigation positioning and other technologies to form a set of indoor position positioning system, so as to realize the position monitoring of people and objects in the indoor space. [0003] Most of the existing indoor positioning solutions are fingerprint fusion inertial navigation, such as geomagnetic fusion inertial navigation, wifi fusion inertial navigation, and Bluetooth fusion inertial navigation. [0004] Inertial navigation is an autonomous navigation method realized by measuring the acceleration and angular velocity of the ship by using two kinds of inertial sensors, gyroscope and accelerometer. Iner...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/00G01C25/005
Inventor 徐强韩业强白少伟
Owner 杭州十域科技有限公司