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A mobile terminal inertial navigation positioning correction method and device thereof

An inertial navigation and mobile terminal technology, applied in the field of communication and positioning, can solve the problems of inertial navigation error accumulation, etc., achieve accurate results of inertial navigation, improve positioning accuracy, and eliminate errors

Active Publication Date: 2020-08-28
QIANXUN SPATIAL INTELLIGENCE INC
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  • Claims
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Problems solved by technology

[0007] The purpose of the present invention is to provide a mobile terminal inertial navigation positioning correction method and its device to solve the problem of inertial navigation error accumulation over time in the absence of satellite navigation

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  • A mobile terminal inertial navigation positioning correction method and device thereof
  • A mobile terminal inertial navigation positioning correction method and device thereof
  • A mobile terminal inertial navigation positioning correction method and device thereof

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Embodiment Construction

[0032] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0033] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0034] The following describes some invention points in the embodiments of the present invention:

[0035] When the mobile terminal can obtain high-precision positioning data (such as differential GPS positioning data), it continuously calculates the differential correction data based on the difference between the real-time high-precision position...

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Abstract

The invention discloses a mobile terminal inertial navigation positioning correction method and device thereof. The method includes the following steps: if real-time positioning data of a first positioning method can be obtained, a differential correction data sequence including a plurality of data items can be calculated, wherein, each data item includes the inertial navigation duration time fromthe inertial navigation starting time and the differential correction data corresponding to the duration time, and the differential correction data is calculated based on the inertial navigation positioning result at the same time and the real-time positioning data of the first positioning mode; if the real-time positioning data of the first positioning method cannot be obtained, the difference deltaT between the current time and the starting time of this inertial navigation is calculated, a data item having the duration time corresponding to deltaT is obtained from the differential correction data sequence, and the positioning result of the current inertial navigation is corrected according to the differential correction data in the data item. The mobile terminal inertial navigation positioning correction method and the device thereof can solve the problem that the positioning result error of inertial navigation accumulates with time.

Description

technical field [0001] The invention relates to the field of communication and positioning, in particular to a mobile terminal inertial navigation positioning correction technology. Background technique [0002] With the development of science and technology, people have higher and higher requirements for the positioning accuracy of dynamic carrier moving targets, and relying on a single sensor can no longer meet the demand. [0003] 1) Satellite navigation has high precision and low cost, but the signal will be interrupted when the signal is blocked. [0004] 2) The anti-interference ability is relatively weak. [0005] 3) The data output frequency is low. [0006] Inertial navigation has the advantages of being all-weather, completely autonomous, and not receiving external interference. But there is a fatal shortcoming: the error accumulates over time, and it is not suitable for scenarios that require inertial navigation for a long time. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 马伟忠
Owner QIANXUN SPATIAL INTELLIGENCE INC
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