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

Hermite-interpolation-based rotation vector acquisition method

A technology of rotation vector and acquisition method, applied in the direction of navigation calculation tools, etc., can solve the problem of low accuracy, and achieve the effect of high solution accuracy and low algorithm drift.

Active Publication Date: 2018-12-07
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common numerical integration formulas include trapezoidal formula, Simpson formula and Lagrange interpolation integral formula. Although their calculations do not need to provide derivative values, their accuracy is not high

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
  • Hermite-interpolation-based rotation vector acquisition method
  • Hermite-interpolation-based rotation vector acquisition method
  • Hermite-interpolation-based rotation vector acquisition method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0017] see figure 1 , which is a flowchart of a method for acquiring a rotation vector based on Hermite interpolation provided in this embodiment. A method for obtaining a rotation vector based on Hermite interpolation, comprising the following steps:

[0018] S1: Based on the Hermite interpolation formula, the expression of the second sample angle increment of the gyroscope is obtained:

[0019]

[0020] Among them, Δθ 1 is the angle increment of the two samples corresponding to the first moment to the third moment, Δθ 2 is the second sample angle increment corresponding to the third moment to the fifth moment, Δθ is the second sample angle increment correspondin...

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 provides a Hermite-interpolation-based rotation vector acquisition method comprising introducing a high-precision Hermite interpolation integral formula for numerically integrating angular rates of a gyroscope at different moments to complete extraction of two sub-sample angle increments, and fully using the angular rates of the gyroscope at different moments and introducing two sub-sample angle increments in first 2 periods to obtain a Hermite-interpolation-based corrected rotation vector. The two sub-sample angle increment and corrected rotation vector obtaining method has lowalgorithm drift and high resolution accuracy, is suitable for high-rotation attitude rotation vector solution in high-dynamic environment.

Description

technical field [0001] The invention belongs to the field of attitude measurement in a high dynamic environment, in particular to a method for acquiring a rotation vector based on Hermite interpolation. Background technique [0002] Attitude measurement is a key technology for high-rotation bodies like guided projectiles to achieve precise strikes on targets. The accuracy of attitude measurement directly affects the accuracy of projectile guidance. Therefore, the analysis of the attitude calculation algorithm and the design of the attitude measurement system become an important link in the study of high-rotation body (guided projectile) navigation and guidance. At present, the commonly used attitude update algorithms mainly include the Euler angle method, the quaternion method, the direction cosine method and the rotation vector method. For the high-rotation body with high overload and high speed characteristics, during the flight of the projectile, the spatial angular posi...

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
IPC IPC(8): G01C21/20
CPCG01C21/20
Inventor 邓志红汪进文刘彤肖烜王博
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com