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Proceedings Paper

A fast initial alignment of MIMU in the two-dimension trajectory correction fuze for spinning projectile on stationary base
Author(s): Qin Wang; Shi-yi Li; Hong-bing Xiao; Hu-quan Li
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Paper Abstract

In the paper, a fast initial alignment of strapdown MIMU used in the two-dimension trajectory correction fuze was analyzed. According to the situation that MIMU can't work normally because of high shock on shrapnel of Compound Extended Range by Base Bleed and Rocket at firing, the MIMU in initial alignment with Bar-Itzhack and Berman's error model is presented and the observability was analyzed. It shows that the observability of MIMU on stationary base is poor. The selection of unobservable states was discussed. A Kalman filter estimation algorithm was provided, but the azimuth error converges very slowly in initial alignment. A fast estimation method of the azimuth error was proposed. It reveals that the azimuth error can be entirely estimated from the estimates of leveling error and leveling error rate without gyro output signal. It shows that the method can realize the rapid initial alignment of MIMU.

Paper Details

Date Published: 4 January 2008
PDF: 10 pages
Proc. SPIE 6836, MEMS/MOEMS Technologies and Applications III, 683618 (4 January 2008); doi: 10.1117/12.756975
Show Author Affiliations
Qin Wang, Beijing Institute of Technology (China)
Shi-yi Li, Beijing Institute of Technology (China)
Hong-bing Xiao, Beijing Institute of Technology (China)
Hu-quan Li, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 6836:
MEMS/MOEMS Technologies and Applications III
Jung-Chih Chiao; Xuyuan Chen; Zhaoying Zhou; Xinxin Li, Editor(s)

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