CALIBRATION OF A LOW COST MEMS INS SENSOR FOR AN INTEGRATED NAVIGATION SYSTEM

摘要

The method, the procedure and the results of the calibration of a low cost MEMS INS sensor are described and discussed. The reduced cost of the MEMSs sensors is very advantageous, but these sensors are characterized by much large errors. The accurate calibration of the sensors is very important for the determination of the systematic errors, like bias, scale factor and misalignment of the axes. For this aim, it has been used the multi-position calibration method, which doesn't require the precise aligned mounting of the sensors with either local level frame or to the vertical direction. The equations in the static case, for the accelerometers sensors are shortly described; the results obtained with the Kalman filter in the experimentation of the tri-axial sensor ADIS 16350 are then illustrated.