Target acquisition control for spacecraft gimballed payload

Details Target acquisition control for spacecraft gimballed payload Target acquisition control for spacecraft gimballed payload

2004-09-28

2008-10-14

To, Tuan C (Department: 3663)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Aeronautical vehicle

C244S171000, C244S158100, C244S173100, C074S005470

Reexamination Certificate

active

07437224

ABSTRACT:
A method and apparatus for controlling a gimbaled platform (108). The method comprises the steps of computing an acquisition phase gimbal angle rate command ωcmd—Acq(530) from a measured LOS angle error ΔθLOS(520) for an initial control period T while computing an estimated LOS angle rate {circumflex over (ω)}LOS(524), computing a tracking phase gimbal angle rate command ωcmd—Trk(532) using a controller (512) having an output initialized with the estimated LOS angle rate {circumflex over (ω)}LOS(524), and commanding the gimballed platform (108) according to an angle rate command ωcmd(522), wherein the angle rate command ωcmd(522) is the acquisition phase angle rate command ωcmd—Acq(530) during the initial control period T and the tracking phase gimbal angle rate command ωcmd—Trk(532) after the initial control period T.

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