System and method for measurement of angular orientation of aerospace platforms

摘要

A method and system are presented for use in determination of the orientation of an aerospace platform with respect to a first rotation axis. A direction of a rotation rate vector of said aerospace platform within a lateral plane intersecting with said first rotation axis is measured and the measured data is analyzed to determine an orientation angle of said aerospace platform about said first rotation axis. While the aerospace platform is in a predetermined-dynamic state movement, a certain direction is determined by measuring a direction of the rotation rate of the aerospace platform within said lateral plane by a sensor assembly mounted on said platform and including at least one rotation rate sensor. An orientation of the platform with respect to said first axis is determined by determining a relation between said certain direction and said known direction within said external reference frame.

主权项

1. A method for use in determination of the orientation of an aerospace platform with respect to a roll rotation axis thereof, the method comprising:
a. providing a predetermined-dynamic state movement of said aerospace platform with respect to an external reference frame, said predetermined-dynamic state movement being characterized in that a direction of lateral rotation rate of the platform within a lateral plane substantially orthogonal to the roll rotation axis, and/or of any time derivative of the lateral rotation rate, is substantially perpendicular to a reference direction within said external reference frame, b. while the aerospace platform is in said predetermined-dynamic state movement, measuring said direction of the lateral rotation rate and generating measured data indicative thereof, c. analyzing Said measured data indicative of the direction of the lateral rotation rate being substantially perpendicular to said reference direction, and determining an orientation angle of said aerospace platform with respect to said roll rotation axis.