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Optical Engineering • Open Access

Self-calibration method based on navigation in high-precision inertial navigation system with fiber optic gyro
Author(s): Lei Wang; Wei Wang; Qian Zhang; Pengyu Gao

Paper Abstract

A rotary inertial navigation system requires higher calibration accuracy of some error parameters owing to rotation. Conventional multiposition and rotation calibration methods are limited, for they do not consider sensors’ actual operating condition. In order to achieve these parameters’ values as closely as possible to their true values in application, their influence on navigation is analyzed, and a relevant new calibration method based on a system’s velocity output during navigation is designed for the vital error parameters, including inertial sensors’ installation errors and the scale factor error of fiber optic gyro. Most importantly, this approach requires no additional devices compared to the conventional method and costs merely several minutes. Experimental results from a real dual-axis rotary fiber optic gyro inertial navigation system demonstrate the practicability and higher precision of the suggested approach.

Paper Details

Date Published: 25 June 2014
PDF: 8 pages
Opt. Eng. 53(6) 064103 doi: 10.1117/1.OE.53.6.064103
Published in: Optical Engineering Volume 53, Issue 6
Show Author Affiliations
Lei Wang, BeiHang Univ. (China)
Wei Wang, BeiHang Univ. (China)
Qian Zhang, BeiHang Univ. (China)
Pengyu Gao, BeiHang Univ. (China)

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