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A fast inertial frame alignment algorithm based on horizontal alignment information for marine SINS

  • Harbin Engineering University

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

Abstract

In this paper, a improved inertial frame alignment algorithm is proposed, which significantly improves the accuracy and time cost of the traditional inertial frame coarse alignment algorithm. Firstly, a dimensionality reduction Gauss-Hermite filter algorithm is employed in the horizontal fine alignment phase. Secondly, according to the feature of the gravity, that the horizontal components of the gravity projected in horizontal reference frame is zero, the projection of the gravity in body inertial coordinate frame could be calculated easily after the horizontal fine alignment. Thirdly, a weighted smoothing algorithm is used to adjust the gravity which obtained after the horizontal fine alignment phase, and then the initial alignment algorithm is accomplished. The simulation results show that the alignment time can be greatly reduced. And the fast initial alignment algorithm can achieve the medium accuracy within 6 minutes. That meets the accuracy requirement of the medium accuracy marine SINS.

Original languageEnglish
Title of host publicationProceedings of the 2014 IEEE/ION Position, Location and Navigation Symposium, PLANS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1415-1419
Number of pages5
ISBN (Print)9781479933204
DOIs
StatePublished - 2014
Externally publishedYes
Event2014 IEEE/ION Position, Location and Navigation Symposium, PLANS 2014 - Monterey, CA, United States
Duration: 5 May 20148 May 2014

Publication series

NameRecord - IEEE PLANS, Position Location and Navigation Symposium

Conference

Conference2014 IEEE/ION Position, Location and Navigation Symposium, PLANS 2014
Country/TerritoryUnited States
CityMonterey, CA
Period5/05/148/05/14

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 14 - Life Below Water
    SDG 14 Life Below Water

Keywords

  • DRGHF
  • SINS
  • fast alignment
  • inertial coordinate frame

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