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9 December 2021 A vehicle angular motion isolation method for dual-axis rotational laser gyro inertial navigation system
Huiying Fan, Xudong Yu, Yuanping Xie
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Proceedings Volume 12030, Third International Conference on Optoelectronic Science and Materials (ICOSM 2021); 1203011 (2021) https://doi.org/10.1117/12.2617343
Event: Third International Conference on Optoelectronic Science and Materials (ICOSM 2021), 2021, Hefei, China
Abstract
Aiming at the problem that the error modulation effects are affected by the angular motions of the vehicle in the dual-axis rotational laser gyro inertial navigation system (INS), a vehicle angular motion isolation method based on attitude feedback is proposed. Based on the error equations of INS, the principles of error modulation in rotation process are analyzed. Then the relationships between the navigation results and the controlled angular velocity imposed on the rotating mechanism are established. Finally, simulation models of angular motions with various forms are established. Simulation results show that this method can effectively isolate the angular motions of the vehicle and reduce the influences of the angular motions on the rotation modulation. The navigation accuracy is significantly improved.
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Huiying Fan, Xudong Yu, and Yuanping Xie "A vehicle angular motion isolation method for dual-axis rotational laser gyro inertial navigation system", Proc. SPIE 12030, Third International Conference on Optoelectronic Science and Materials (ICOSM 2021), 1203011 (9 December 2021); https://doi.org/10.1117/12.2617343
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KEYWORDS
Modulation
Gyroscopes
Inertial navigation systems
Error analysis
Motion models
Laser applications
Velocity measurements
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