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Optimal two-position alignment for SINS under inertial frame

  • Wei Gao
  • , Pan Ye
  • , Hongmei Bai
  • , Weitong Xu

Research output: Contribution to journalArticlepeer-review

Abstract

The filter state components are not completely observable in a Kalman filter on an inertial frame. Aiming at this problem, we propose a method of two-position alignment. Based on the theory of piece-wise constant system (PWCS) and the method of singular value decomposition (SVD), we can get the highest degree of observability as rotating the heading axis among the three axes. In addition, the simulation is carried out with the heading error specification, and the conclusion rotation with 180° along the heading axis is the optimal.

Original languageEnglish
Pages (from-to)386-388
Number of pages3
JournalYadian Yu Shengguang/Piezoelectrics and Acoustooptics
Volume37
Issue number3
StatePublished - 1 Jun 2015
Externally publishedYes

Keywords

  • Inertial frame
  • Kalman filter
  • Observability
  • Strapdown inertial navigation system
  • Two-position alignment

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