Three-vector coarse alignment method and system

A three-vector, rough alignment technology, applied in the field of navigation, can solve the problem of low alignment accuracy, achieve the effects of improving alignment accuracy, meeting alignment accuracy requirements, and reducing impact

Pending Publication Date: 2021-07-23
NANJING UNIV OF POSTS & TELECOMM
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology helps reduce interference from external sources like vibrations or other factors that may affect the measurements made with an accelerometer used for navigational purposes such as gaming machines. It also enhances the precision required during flight time calculations due to its ability to accurately align itself over long distances without any errors caused by outside influences.

Problems solved by technology

This patented technical problem addressed in this patents relating to an improved way for aligning acceleration sensors with their associated navigational systems during submerged operation without causing any measurement error due to external factors like water currents or waves that may impact its performance.

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
  • Three-vector coarse alignment method and system
  • Three-vector coarse alignment method and system
  • Three-vector coarse alignment method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0042] Such as figure 1 As shown, a three-vector coarse alignment method includes,

[0043] Step 1, Kalman filtering is used to eliminate noise in the measured values ​​of gyroscope and accelerometer.

[0044] In step 2, the noise-removed gyroscope and accelerometer measurements are input into a preset three-vector alignment model for coarse alignment.

[0045] The above-mentioned three-vector coarse alignment method eliminates the noise in the measured values ​​of the gyroscope and accelerometer through Kalman filtering, which reduces the influence of noise on the three-vector coarse alignment and increases the accuracy.

[0046] Kalman filtering is an existing filtering method, in order to ada

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 discloses a three-vector coarse alignment method. The method comprises the following steps: eliminating noise in measured values of a gyroscope and an acceleration meter by adopting Kalman filtering, wherein in the Kalman filtering, a residual x2 detection method is adopted to adjust a measurement noise covariance and a Kalman gain matrix in the current iteration, and the adjusted measurement noise covariance and Kalman gain matrix are used for the next iterative calculation; and inputting the noise-eliminated measured values of the gyroscope and the accelerometer into a preset three-vector alignment model, and performing coarse alignment. Meanwhile, the invention discloses a corresponding system. According to the method, noise in measured values of the gyroscope and the accelerometer is eliminated through Kalman filtering, the influence of the noise on three-vector coarse alignment is reduced, and the alignment precision is improved.

Description

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

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
Owner NANJING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap