Robustness analysis of SINS observability

Jia Cheng Yu*, Jia Bin Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Investigates the observability of SINS. On the basis of piece-wise constant discrete system's observability, a further discussion of parameter perturbation is done to the system, and a sufficient condition is given. The conclusion is applied to the three-position alignment of strapdown systems. Simulation results reveal that on the range of 0. 002 m · s-2 variation of gravity acceleration, it has little effect on the observability of the system. The minimum eigenvalue, number of conditions, reciprocal of trace are linear to the gravitational acceleration. The maximum eigenvalue of the perturbation system is a quadratic function of the gravitational acceleration. This demonstrates that the SINS observability is robust to the parameter perturbation.

Original languageEnglish
Pages (from-to)387-389
Number of pages3
JournalHe Jishu/Nuclear Techniques
Volume22
Issue number3
Publication statusPublished - 1999

Keywords

  • Minimum eigenvalue
  • Observability
  • Parameter perturbation
  • Robustness analysis
  • SINS
  • Three-position alignment

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Yu, J. C., & Chen, J. B. (1999). Robustness analysis of SINS observability. He Jishu/Nuclear Techniques, 22(3), 387-389.