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- W2368692707 abstract "As the laser gyroscopes and accelerometers in a ring laser gyroscope Strapdown Inertial Navigation System(SINS) generate high noises by the dither motion of a base and a low pass fitering and a wavelet method can not suppress the noises in real time effectively,this paper presents a prefiltering method combining a low pass filtering and a Kalman filtering based on a hidden Markov model.Firstly,the output of a sensor is filtered by the lowpass filter,then it is filtered by the steady-state Kalman filter based on the hidden Markov model.By this way,the large sensor noise brought by the dither motion of the base can be lowed down to a very low level.Experiment results show that this prefiltering method can work efficiently with a low computational complexity.When the vehicle engine is on,the standard variances of the ring laser gyroscope and accelerometer are suppressed from 300°/h to 1°/h and from 11 mg to 40 μg,respectively.It is concluded that the proposed prefiltering can help SINS accomplish the initial alignment on a rocking base." @default.
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- W2368692707 date "2009-01-01" @default.
- W2368692707 modified "2023-09-27" @default.
- W2368692707 title "Prefiltering for initial alignment of ring laser gyroscope SINS on rocking base" @default.
- W2368692707 hasPublicationYear "2009" @default.
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