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Alignment method for FOG single-axis rotation-modulation SINS

  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Aircrafts with common attitude maneuverability (e.g. helicopter) are in more and more urgent need of low cost and high precision inertial navigation system (INS). To meet this demand, a scheme of fiber-optic gyroscope (FOG) strapdown inertial navigation system (SINS) with single-axis to and fro rotation-modulation method is adopted. A short-time alignment method bases on open-loop mathematic platform misalignment model is studied. The test results from the actual system show that this method has characteristic of high accuracy and simple, reliable operation. The estimate accuracy of azimuth error and is less than 2'. And the estimate error of north drift achieves 0.001o/h. Simultaneously, the input-axis accelerometer bias and gyroscope drift are estimated exactly.

Original languageEnglish
Title of host publicationMechanical and Electrical Technology IV
Pages1127-1131
Number of pages5
DOIs
StatePublished - 2012
Event4th International Conference on Mechanical and Electrical Technology, ICMET 2012 - Kuala Lumpur, Malaysia
Duration: 24 Jul 201226 Jul 2012

Publication series

NameApplied Mechanics and Materials
Volume229-231
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference4th International Conference on Mechanical and Electrical Technology, ICMET 2012
Country/TerritoryMalaysia
CityKuala Lumpur
Period24/07/1226/07/12

Keywords

  • Alignment
  • Fiber-optic gyroscope (FOG)
  • Rotation-modulation
  • Strapdown inertial navigation system (SINS)

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