Application of a static and dynamic united decoupling method for non-gyro inertial measurement unit

Mingli Ding; Qingdong Zhou; Qi Wang

doi:10.1117/12.716860

9 April 2007 Application of a static and dynamic united decoupling method for non-gyro inertial measurement unit

Mingli Ding, Qingdong Zhou, Qi Wang

Proceedings Volume 6571, Multisensor, Multisource Information Fusion: Architectures, Algorithms, and Applications 2007; 65710Q (2007) https://doi.org/10.1117/12.716860
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

When a Non-gyro inertial measurement unit (NGIMU) is working, an inevitable static coupling error and dynamic coupling error occur. The coupling error is defined as a situation that the output signal of a single-axis accelerometer includes the additional value, which affected by the accelerometer input in other direction. Obviously, the coupling error will decrease the system measurement precision seriously. Basing on a nine-accelerometer configuration of NGIMU and the definition of the coupling error, a new static and dynamic united decoupling method is applied to NGIMU. The method overcome the complexity which is aroused by using the static decoupling method and dynamic coupling method respectively, and simplifies the following processing system. Finally, a simulation case for estimating the error of the angular rate in three axes is investigated. The simulation results show that after the static and dynamic decoupling, the navigation precision is improved effectively.

Citation Download Citation

Mingli Ding, Qingdong Zhou, and Qi Wang "Application of a static and dynamic united decoupling method for non-gyro inertial measurement unit", Proc. SPIE 6571, Multisensor, Multisource Information Fusion: Architectures, Algorithms, and Applications 2007, 65710Q (9 April 2007); https://doi.org/10.1117/12.716860

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