A New Attitude Algorithm for the INS Using Ring Laser Gyros

Yunhe Teng, Meifeng Guo,Qiaoguang Liu, HaijunYang,Yanshen Zhang and Junfeng Li

Abstract:	A new attitude updating algorithm of three-sample method for the coning error compensation in strapdown inertial navigation system (SINS) using ring laser gyro (RLG) is designed and developed in this paper. Concerning the accuracy of coning compensation, the relationship between the sampling frequency of RLG and the coning frequency of vehicle is discussed as the basis for selecting the coning compensating algorithms and the sampling frequency of RLG. As shown by the theoretical analysis and simulation, the new attitude updating algorithm of three-sample method in comparison with the published other algorithms is proved to have higher accuracy in case of the same ratio of RLG sampling frequency to coning frequency. The new algorithm has been applied in the LINS for the satellite tracking system (STS) of mobile communication successfully. As shown by the results from Oct. to Dec. 2000, in Chongqing and Beijing, China, on the vehicle in mountain area the attitude and satellite tracking accuracy is better than 0.1 deg., which fulfils fully the technical requirement for the mobile communication. Key words: ring laser gyro strapdown inertial navigation system, coning compensation algorithm, satellite tracking system
Published in:	Proceedings of the 57th Annual Meeting of The Institute of Navigation (2001) June 11 - 13, 2001 Albuquerque, NM
Pages:	444 - 448
Cite this article:	Teng, Yunhe, Guo, Meifeng, Liu, Qiaoguang, HaijunYang,, Zhang, Yanshen, Li, Junfeng, "A New Attitude Algorithm for the INS Using Ring Laser Gyros," Proceedings of the 57th Annual Meeting of The Institute of Navigation (2001), Albuquerque, NM, June 2001, pp. 444-448.
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