Study on Decoupling Algorithm of Strapdown Imaging Guidance System

摘要

The measurements of strapdown imaging seeker are based on body coordinate system. Missile's attitude motion information is contained within the measured body line of sight (LOS) angles, but LOS rates relative to inertial coordinate are needed for the practical guidance system. Therefore, strapdown decoupling for measured signal is essential so as to remove the body attitude information from the measurements. In this paper, the decoupling algorithm is proposed and simulation is performed to show the validation of the decoupling algorithm.