Efficiency Improvement of Strapdown Inertial Navigation Systems Using Typical Locked Angular Motion

Two types of locked angular motion of control object based on strapdown inertial navigation system are under consideration. The mentioned motions are given as a certain sequence of spatial turns relative to body (instrument) axes. Structural changes of angular position error of control object relative to instrument axes based on the results of typical motion are examined. Besides, it is supposed that angle-measuring channels are dominated by errors proportional to measuring signal. Possibility of instrument axes error redistribution by typical locked angular motion parameter setting is shown. Directions of improvement of the control object main characteristics based on strapdown inertial navigation system using such typical motion are described.