A Prediction and Correction Method Based on Inertial Integrated Navigation Data

A technology of navigation data and correction method, which is applied in the field of navigation, can solve the problems of low sensitivity and precision of inertial navigation data processing, and achieve the effect of preventing interference and improving sensitivity

Active Publication Date: 2022-05-27
BEIJING CHERILEAD TECH
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Problems solved by technology

[0008] The present invention provides a prediction and correction method based on inertial integrated navigation data, which is used to solve the problem of low sensitivity and precision of inertial navigation data processing in the prior art

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  • A Prediction and Correction Method Based on Inertial Integrated Navigation Data
  • A Prediction and Correction Method Based on Inertial Integrated Navigation Data
  • A Prediction and Correction Method Based on Inertial Integrated Navigation Data

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Embodiment Construction

[0060] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

[0061] The embodiment of the present invention provides an estimation and correction method based on inertial integrated navigation data, figure 1 It is a flowchart of an estimation and correction method based on inertial integrated navigation data in an embodiment of the present invention, please refer to figure 1 , the method includes the following steps:

[0062] S100, performing data processing on the input inertial navigation data to obtain an evolution trend of the inertial navigation data;

[0063] S200, within a preset time threshold range, acquire new inertial navigation data, and determine whether the number of times the new inertial navigation data matches the evolut...

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Abstract

The invention discloses a prediction correction method based on inertial integrated navigation data, comprising: performing data processing on the input inertial navigation data, and obtaining the evolution trend of the inertial navigation data; within a preset time threshold range, obtaining new Inertial navigation data, judging whether the number of times the new inertial navigation data matches the evolution trend is within a preset range, if so, performing setting the evolution trend as the current evolution trend of the inertial navigation data, If not, perform the step of executing new inertial navigation data to process the input inertial navigation data, obtain the evolution trend of the inertial navigation data, and use the new evolution trend as the current evolution trend. Through the continuous input of inertial navigation data, the evolution trend of navigation data is estimated, and the newly input navigation data is estimated and corrected to prevent abnormal data or unreasonable data from affecting navigation. Set the time threshold range, re-determine the evolution trend of navigation, prevent the interference of the original trend, and improve the sensitivity.

Description

technical field [0001] The invention relates to the technical field of navigation, in particular to an estimation and correction method based on inertial integrated navigation data. Background technique [0002] The basic working principle of inertial navigation is based on Newton's laws of mechanics. By measuring the acceleration of the carrier in the inertial reference system, integrating it with time, and transforming it into the navigation coordinate system, the value in the navigation coordinate system can be obtained. Information such as speed, yaw angle and position. The emergence of MEMS (Micro-Electro-Mechanical System), the third-generation inertial navigation sensor material, and the development and improvement of strapdown inertial navigation theory have enabled the miniaturization of navigation systems. [0003] Inertial navigation data (inertial navigation data) is an external data source, and the data itself requires high hardware equipment. If the accuracy i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/16G01C25/00
CPCG01C21/16G01C25/00
Inventor 张凯郑应强赵晗
Owner BEIJING CHERILEAD TECH
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