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An Identification Method for Installation Errors of GFSINS

Jin Chun-zhu

Abstract

Based on the operation principle of GFSINS,angular solution equations are derived respectively in the cases of ideal conditions and existing installation errors.The accelerometer output error resulting from the installation errors of accelerometers is analyzed.An identification formula of the accelerometer installation error is built by means of rotating the axes of the inertial measurement unit(IMU) to change its locating position on the motionless base.Numerical simulation results show that the identification method is effective and the solution precision of angular can be improved evidently by compensating the identified installation error.

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Key concepts: Accelerometer, Inertial measurement unit, Identification (biology), Position (finance), Ideal (ethics), Base (topology), Observational error, Inertial frame of reference