A novel calibration procedure for dynamically tuned gyroscope designed by D-optimal approach

Effective calibration and compensation of the deterministic errors of Dynamically Tuned Gyroscope (DTG) are crucial in improving the application precision and performance of DTG. However, conventional calibration procedures used empirical parameter-setting and provided no evidence on optimization in terms of accuracy and calibration time. In this paper, D-optimal experimental designs were constructed to propose a practical 12-position calibration procedure of DTG which can be implemented by the medium-precision turntable. The proposed procedure was tested by a tactical-grade DTG. Test results show that, the fit uncertainty is reduced about 62% for the ox axis and 39% for the oy axis respectively. Furthermore, the new calibration procedure achieves D-optimal accuracy with half of the calibration time of the widely adopted 24-position calibration procedure.