METHOD OF CORRECTING ANGULAR VELOCITY METERS OF SPACESHIP STRAPDOWN INERTIAL ORIENTATION SYSTEMS AND DEVICE TO THIS END Russian patent published in 2012 - IPC B64G1/24 

FIELD: transport.

SUBSTANCE: invention relates to space engineering, particularly, to strapdown integral orientation system angular velocity meters, namely, to methods of their correction. Proposed method consists in executing three sequential correction plane revolutions of spaceship about axes of roll, yaw and pitch through preset angle. Before first correction turn, spaceship is stabilised in preset position to define angular position increment and angular position as analytical solution of kinematic equations and average magnitudes of projections of spaceship speed of rotation on angular velocity meter measurement axes. Discrepancies at program turns and calculated constant drifts are used to calculate errors in scale factors and errors in single-axis meter measurement axis setting. Correction device comprises angular velocity meters, stellar-measurement system, correction parameters registration unit connected to angular velocity meter, correction parameter calculation unit, unit of integration of angular velocity projections on meter sensitivity axis, and to angular motion parameters calculation unit. Angular motion parameter calculation unit is connected to stellar-measurement system. Discrepancies calculation unit is connected to correction parameter calculation unit and memory unit. The latter is connected to integration unit, angular motion parameter calculation unit and programmer unit. Zero signal calculation unit is connected to correction parameter calculation unit, discrepancy calculation unit and motion programmer unit. The latter is connected to discrepancy calculation unit and correction parameter calculation unit.

EFFECT: comprehensive and accurate determination of angular velocity of rotation and orientation.

2 cl, 2 dwg