Target acquisition control for spacecraft gimballed payload

摘要

A method and apparatus for controlling a gimbaled platform. The method comprises the steps of computing an acquisition phase gimbal angle rate command omega_cmd-Acq from a measured LOS angle error Deltatheta_LOS for an initial control period T while computing an estimated LOS angle rate {circumflex over (omega)}_LOS, computing a tracking phase gimbal angle rate command omega_cmd-Trk using a controller having an output initialized with the estimated LOS angle rate {circumflex over (omega)}_LOS, and commanding the gimballed platform according to an angle rate command omega_cmd, wherein the angle rate command omega_cmd is the acquisition phase angle rate command omega_cmd-Acq during the initial control period T and the tracking phase gimbal angle rate command omega_cmd-Trk after the initial control period T.