Effects of Non-orthogonal Scheme on Error Modulation of Single-axis Rotating Strapdown INS

DOI

10.2991/icmmita-15.2015.248How to use a DOI?

Keywords

Non-orthogonal scheme; single-axis rotating; strapdown INS; error modulation.

Abstract

To improve the accuracy of strapdown inertial navigation system(SINS), a non-orthogonal installation scheme of inertial sensors was put forward for single-axis rotating SINS in this paper. Firstly, the principle of single-axis rotation modulation technology was expounded based on the error model of inertial sensors. Then, the effects of non-orthogonal scheme upon rotating modulation were analyzed theoretically, which show that the equivalent error magnitudes vary with angles between sensitive axes of inertial sensors. Finally, the simulation was performed. Experimental results show that the velocity error reduced from 1.91m/s to 1.03m/s in north and from 1.95m/s to 1.08m/s in east, and the positioning accuracy improved from 7.32 n mile to 2.00 n mile in north and from 5.06 n mile to 1.70 n mile in east within 24h when suing the new scheme.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Qichao Wang
AU  - Meiping Wu
AU  - Shaokun Cai
AU  - Changfeng Chen
PY  - 2015/11
DA  - 2015/11
TI  - Effects of Non-orthogonal Scheme on Error Modulation of Single-axis Rotating Strapdown INS
BT  - Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 1336
EP  - 1340
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-15.2015.248
DO  - 10.2991/icmmita-15.2015.248
ID  - Wang2015/11
ER  -