Six-redundancy-type optical fiber strapdown inertial navigation system (SINS)

An inertial navigation system and optical fiber strapdown technology, applied in the field of inertial navigation, can solve the problems of high cost, achieve stable performance, improve accuracy and reliability, and have strong anti-interference effects

Inactive Publication Date: 2013-11-13
BEIHANG UNIV
View PDF5 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main ways to improve the reliability and accuracy of the inertial navigation system: one is to improve the reliability and accuracy of a single instrument, which puts forward higher requirements for the processing technology and vario

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
  • Six-redundancy-type optical fiber strapdown inertial navigation system (SINS)
  • Six-redundancy-type optical fiber strapdown inertial navigation system (SINS)
  • Six-redundancy-type optical fiber strapdown inertial navigation system (SINS)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. The embodiment of the present invention takes a certain type of flight vehicle as an example.

[0027] The invention is a six-redundant optical fiber strapdown inertial navigation system, which consists of three parts: a structural part, an inertial device part and a peripheral circuit part. The position connection relationship between them is: the inertial device is installed on the dodecahedron IMU bracket of the structural part, and the peripheral circuit part is mainly distributed on the body side of the structural part.

[0028] The structural part mainly includes a dodecahedron IMU bracket, a fiber optic gyroscope skeleton and a system body.

[0029] The dodecahedron IMU bracket is: It is necessary to explain the structure of the dodecahedron. The dodecahedron is one of the five Platonic solids and belongs to the quasi-crystal structure. It has 20 v...

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 six-redundancy-type optical fiber strapdown inertial navigation system (SINS). The system is composed of a structural component part, an inertial device part and a peripheral circuit part, wherein the inertial device part is installed on a regular dodecahedron IMU (inertial measurement unit) support of the structural component part, and the peripheral circuit part is distributed on the system body brink of the structural component part. In the invention, the regular dodecahedron is designed to be of a hollow structure, so that high stiffness and light weight of a system IMU table body are realized; redundant configuration is adopted, so that the accuracy and reliability of the inertial navigation system are improved; the separation of the optical path and circuit of an optical fiber gyroscope is basically realized in structure for a system optical fiber gyroscope, so that varying degrees of influences of temperature and temperature gradient change brought by circuit heating on the optical path are avoided; the system has stable performance and good adaptive capacity to environment, can bear a variety of environment test requirements similar to that born by the inertial navigation system, and has good real-time performance.

Description

technical field [0001] The invention relates to a six-redundant optical fiber strapdown inertial navigation system based on six optical fiber gyroscopes and six accelerometers, and belongs to the technical field of inertial navigation. Background technique [0002] Inertial technology is a comprehensive technology involving multiple disciplines. It is a general term for inertial navigation and inertial guidance technology, inertial instrument technology, inertial measurement technology, and related systems and device technologies. The inertial navigation system relies on its own inertial sensitive components and does not rely on any external information to measure navigation parameters. Therefore, it is not subject to natural or artificial interference and has good concealment. It is a completely autonomous navigation system. [0003] Modern missiles, satellites, spacecraft and other carriers have put forward higher and higher requirements for the reliability and accuracy of...

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): G01C21/16
Inventor 张春熹宋来亮晁代宏赵新强
Owner BEIHANG UNIV
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