THE USE OF KALMAN FILTER IN THE PROBLEM OF CALIBRATION OF ERRORS OF INERTIAL SYSTEM OF DEFINITION OF A SPACE VEHICLE ORIENTATION

摘要

Strapdown inertial system of definition of angular orientation of a low orbital space vehicle, based on the integration of kinematical equations of angular movement of a firm body is considered. As initial sensors of this system angular velocity sensors are used and for alignment and correction of inertial system -immovable astrotrackers, fixed in a space vehicle body. For estimation of multiplicative errors of angular velocity sensors, algorithm of optimal linear filtration is used. In the problem of calibration of errors of angular velocity sensors, parametrical synthesis of Kalman filter is made without any special calibration maneuvers of a space vehicle while it is performing regular flat rotations.