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    DETERMINATION OF GUIDED-MUNITION ROLL ORIENTATION
    1.
    发明申请
    DETERMINATION OF GUIDED-MUNITION ROLL ORIENTATION 审中-公开

    公开(公告)号：WO2018128612A1

    公开(公告)日：2018-07-12

    申请号：PCT/US2017/012290

    申请日：2017-01-05

    Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION, INC.

    Inventor： SCHORR, David J. ,  BATCHELDER, Jason H. ,  GIBSON, Jeremy B. ,  STEENSON JR., James H. ,  VASILE, Joseph D.

    IPC: F41G7/00 ,  F41G7/22 ,  F41G7/26 ,  F41G7/30 ,  F41G9/00 ,  F42B15/00 ,  F42B15/01

    Abstract: Techniques are provided for determination of a guided-munition orientation during flight based on lateral acceleration, velocity, and turn rate of the guided-munition. A methodology implementing the techniques, according to an embodiment, includes obtaining a lateral acceleration vector measurement and a velocity of the guided-munition, and calculating a ratio of the two, to generate an estimated lateral turn vector of the guided-munition. The method also includes integrating the estimated lateral turn vector, over a period of time associated with flight of the guided-munition, to generate a first type of predicted attitude change. The method further includes obtaining and integrating a lateral turn rate vector measurement of the guided-munition, over the period of time associated with flight of the guided-munition, to generate a second type of predicted attitude change. The method further includes calculating a gravity direction vector based on a difference between the first and second types of predicted attitude change.

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