Confirmation and analysis on the optimal multiposition alignment of strapdown inertial navigation system
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摘要: 为了实现捷联惯导系统(SINS, Strapdown Inertial Navigation System)快速精确对准,研究了SINS进行最优多位置对准的条件及方法.利用李雅普诺夫变换得到的SINS等价误差模型,在对惯性测量单元(IMU, Inertial Measurement Unit)绕正交轴旋转时SINS可观测性进行定量分析的基础上,通过研究惯性器件误差与IMU角位置之间的关系,定量分析了IMU的转动方式,明确了使SINS误差状态达到最优估计时IMU的最佳旋转角位置.最后,通过仿真验证了理论分析的正确性.Abstract: To realize precise alignment, the optimal multiposition alignment conditions and methods of strapdown inertial navigation system(SINS) were investigated. Using an equivalent error model of SINS established by Lyapunov transform, the observability of SINS error states was quantificationally analyzed by rotating IMU around the orthogonal axes. Then, by research on the relationship between inertial instrument errors and IMU attitudes, the rotational modes by quantitative analysis of inertial measurement unit(IMU) were presented, and the IMU optimal rotating angular positions on which the optimum estimation of SINS error states were achieved . Finally, the simulation results verify the correctness of theoretical analysis.
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[1] Jiang Y E,Lin Y P.Error estimation of INS ground alignment through observability analysis[J].IEEE Transactions on Aerospace and Electronic Systems,1992,28(1):92-97 [2] Tang Y G,Wu Y X,Wu M P,et al.INS /GPS integration:global obervability analysis[J].IEEE Transaction on Vehicular Technology,2009,58(3):1129-1142 [3] Hong S,Lee M H,Chun H H,et al.Observability of error states in GPS/INS integration[J].IEEE Transaction on Vehicular Technology,2005,54(2):731-739 [4] Lee J G,Park C G,Park H W.Multiposition alignment of strapdown inertial navigation system[J].IEEE Transaction on Aerospace and Electronic Systems,1993,29(4):1323-1328 [5] Cao J Y,Tang J X,Wang Y.Observability analysis of four-position alignment for laser gyroscope strapdown inertial navigation system[C]// American Institute of Instrument and Electronics.Proceedings of the 17th Conference on Electronics and Optoelectronics.Dalian,Liaoning:[s.n.],2011:227-230 [6] Chung D,Chan Gook Park an,Lee J G.Observability analysis of strapdown inertial navigation system using Lyapunov transformation[C]// American Institute of Systems,Control and Information Engineers.Proceedings of the 35th Conference on Decision and Control.Kobe:[s.n.],1996:23-28 [7] Goshen-Meskin D,Bar-Itzhack I Y.Observability analysis of piece-wise constant system-part I:theory[J].IEEE Transactions on Aerospace and Electronics Systems,1992,28(4):1056-1067 -
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