METHOD OF DEFINING ERRORS OF ORIENTATION AXLES OF LASER GYROSCOPES AND PENDULUM ACCELEROMETERS IN A STRAP DOWN INERTIAL NAVIGATION SYSTEM Russian patent published in 2019 - IPC G01C25/00 

FIELD: instrument engineering.

SUBSTANCE: invention relates to instrument-making and can be used to determine errors of orientation of measuring axes of gyroscopes and pendulum accelerometers in GINS after temperature, vibration or impact effects, as well as during operation. Method for determining measurement errors of measurement axes of gyroscopes and pendulum accelerometers in onboard inertial navigation system based on measurements of parameters of pendulum accelerometers and laser gyroscopes and processing of measurement results, in which a freeform inertial navigation system with three laser gyroscopes and three pendulum accelerometers are mounted on a test platform of the test bench, with simultaneous formation of a reference orthogonal coordinate system XYZ, determining axes of orientation of x, y, z axes in a reference orthogonal coordinate system XYZ separately from readings from gyros (Cq) and accelerometers (Ca), after that, angles of non-orthogonality of dissimilar axes are determined for each of axes x, y, z orientation matrices by means of scalar product, as well as angles between similar axes.

EFFECT: high reliability and accuracy of measurements, wider field of use.

1 cl, 1 dwg