Damping Rotating Grid SINS Based on a Kalman Filter for Shipborne Application

Fang, Tao; Huang, Wenyan; Luo, Li

doi:10.1109/access.2019.2893895

Cited by 10 publications

(5 citation statements)

References 20 publications

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“…The ECEF frame does not have any specific points in the near-Earth space [2] .However, it relies on auxiliary sensors such as satellites. The grid frame can be used for navigation in the polar regions and is convenient to apply the damping algorithm [3] , but the calculation is complicated. The transversal frame has the advantages of simple calculation and easy application of damping algorithms [4] .…”

Section: Introductionmentioning

confidence: 99%

Analysis of Polar Region Navigation Algorithm of Laser Gyro Single-axis Rotation Modulation Inertial Navigation

Gao

Liang

et al. 2022

J. Phys.: Conf. Ser.

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In the polar regions, the local geographic frame will become invalid due to the convergence of meridians and other reasons. In response to this problem, the inertial navigation algorithm was reorganized in the transversal frame, and the error equation was also analyzed. The simulation experiment and actual experiment are carried out to verify the effectiveness of the inertial navigation algorithm in the transversal frame based on the single-axis rotation modulation inertial navigation system. Experimental results show that the transversal INS mechanization based on single-axis rotation modulation can solve the computational problems caused by the convergence of meridians in polar regions, achieving high-precision navigation.

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Section: Introductionmentioning

confidence: 99%

Analysis of Polar Region Navigation Algorithm of Laser Gyro Single-axis Rotation Modulation Inertial Navigation

Gao

Liang

et al. 2022

J. Phys.: Conf. Ser.

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“…Different rotation schemes are designed to minimize systematic errors. Various rotation modulation schemes designed for fiber optic gyroscope (FOG) have strong reference significance for MEMS inertial navigation [ 16 , 17 ]. However, compared with the fiber optic gyroscope, the MEMS sensor has a larger constant error and larger noise, and the error component is more complex [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

A Low-Cost MEMS Missile-Borne Compound Rotation Modulation Scheme

Yuan

Zhang

et al. 2021

Sensors

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Rotation modulation (RM) has been widely used in navigation systems to significantly improve the navigation accuracy of inertial navigation systems (INSs). However, the traditional single-axis rotation modulation cannot achieve the modulation of all the constant errors in the three directions; thus, it is not suitable for application in highly dynamic environments due to requirements for high precision in missiles. Aiming at the problems of error accumulation and divergence in the direction of rotation axis existing in the traditional single-axis rotation modulation, a novel rotation scheme is proposed. Firstly, the error propagation principle of the new rotation modulation scheme is analyzed. Secondly, the condition of realizing the error modulation with constant error is discussed. Finally, the original rotation modulation navigation algorithm is optimized for the new rotation modulation scheme. The experiment and simulation results show that the new rotation scheme can effectively modulate the error divergence of roll angle and improve the accuracy of roll angle by two orders of magnitude.

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“…Through the foundation of the observation equation in both the internal damping state and the external damping state, the convergence time of Earth oscillation errors is shortened compared to the conventional damping method. In Reference [15], Kalman filter is applied in external horizontal damping algorithm for the shipborne grid SINS. It focuses on the influence of the constant error of Doppler Velocity Log (DVL) within the navigation solution and gives a brief criterion of the state switching based on the difference of the observations between two adjacent moments changes.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Determination on Switch Timing Between Damping and Non-Damping Status of Strapdown Fiber Optic Gyrocompass

2020

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It is necessary to locate the precise timing of switching into non-damping mode when the ship comes across zigzag maneuver, which helps avoid overshoot errors and maintain accuracy of ship's attitudes. In this paper, we propose a novel method to make the right decision on the damping/non-damping switch timing selection. Ship's in-motion data, collected by the gyrocompass system in advance, will first be pre-processed using wavelet denoising procedure and then treat as support vector machine (SVM) training input. Once the model is established, strapdown fiber optic gyrocompass (FOGC) can be equipped with the ability of self-judgment on when to cut off the alignment closed loops to become invulnerable and when to let it back online to remain stable by means of SVM classification schemes for switch timing recognition. Results show our method has better performance in the time of ships maneuver compared to the whole course damping network solution. Furthermore, transverse comparisons indicate our Wavelet-SVM method has better performance than BP neural network and traditional threshold method during maneuvering navigation process. INDEX TERMS Strapdown gyrocompass, alignment loops, switch timing, support vector machine, wavelet denoising.

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Damping Rotating Grid SINS Based on a Kalman Filter for Shipborne Application

Cited by 10 publications

References 20 publications

Analysis of Polar Region Navigation Algorithm of Laser Gyro Single-axis Rotation Modulation Inertial Navigation

Analysis of Polar Region Navigation Algorithm of Laser Gyro Single-axis Rotation Modulation Inertial Navigation

A Low-Cost MEMS Missile-Borne Compound Rotation Modulation Scheme

A Novel Method for Determination on Switch Timing Between Damping and Non-Damping Status of Strapdown Fiber Optic Gyrocompass

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