Next Article in Journal
Characterization of Microparticle Separation Utilizing Electrokinesis within an Electrodeless Dielectrophoresis Chip
Previous Article in Journal
Virtual Estimator for Piecewise Linear Systems Based on Observability Analysis
Sensors 2013, 13(3), 2750-2762; doi:10.3390/s130302750
Article

Systematic Angle Random Walk Estimation of the Constant Rate Biased Ring Laser Gyro

* ,
,
,
 and
Received: 30 November 2012; in revised form: 22 January 2013 / Accepted: 22 February 2013 / Published: 27 February 2013
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [358 KB, uploaded 21 June 2014]   |   Browse Figures
Abstract: An actual account of the angle random walk (ARW) coefficients of gyros in the constant rate biased rate ring laser gyro (RLG) inertial navigation system (INS) is very important in practical engineering applications. However, no reported experimental work has dealt with the issue of characterizing the ARW of the constant rate biased RLG in the INS. To avoid the need for high cost precise calibration tables and complex measuring set-ups, the objective of this study is to present a cost-effective experimental approach to characterize the ARW of the gyros in the constant rate biased RLG INS. In the system, turntable dynamics and other external noises would inevitably contaminate the measured RLG data, leading to the question of isolation of such disturbances. A practical observation model of the gyros in the constant rate biased RLG INS was discussed, and an experimental method based on the fast orthogonal search (FOS) for the practical observation model to separate ARW error from the RLG measured data was proposed. Validity of the FOS-based method was checked by estimating the ARW coefficients of the mechanically dithered RLG under stationary and turntable rotation conditions. By utilizing the FOS-based method, the average ARW coefficient of the constant rate biased RLG in the postulate system is estimated. The experimental results show that the FOS-based method can achieve high denoising ability. This method estimate the ARW coefficients of the constant rate biased RLG in the postulate system accurately. The FOS-based method does not need precise calibration table with high cost and complex measuring set-up, and Statistical results of the tests will provide us references in engineering application of the constant rate biased RLG INS.
Keywords: rate biased technique; ring laser gyro; fast orthogonal search; Allan variance rate biased technique; ring laser gyro; fast orthogonal search; Allan variance
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Yu, H.; Wu, W.; Wu, M.; Feng, G.; Hao, M. Systematic Angle Random Walk Estimation of the Constant Rate Biased Ring Laser Gyro. Sensors 2013, 13, 2750-2762.

AMA Style

Yu H, Wu W, Wu M, Feng G, Hao M. Systematic Angle Random Walk Estimation of the Constant Rate Biased Ring Laser Gyro. Sensors. 2013; 13(3):2750-2762.

Chicago/Turabian Style

Yu, Huapeng; Wu, Wenqi; Wu, Meiping; Feng, Guohu; Hao, Ming. 2013. "Systematic Angle Random Walk Estimation of the Constant Rate Biased Ring Laser Gyro." Sensors 13, no. 3: 2750-2762.


Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert