Underwater position determining system
    2.
    发明授权
    Underwater position determining system 失效
    水下位置决定系统

    公开(公告)号:US3602877A

    公开(公告)日:1971-08-31

    申请号:US3602877D

    申请日:1969-01-03

    Applicant: HONEYWELL INC

    CPC classification number: G01S3/805 G01S5/28

    Abstract: Apparatus for determining and displaying the angular position of a water craft relative to a fixed underwater location, and a method for determining distances therebetween if the depth of the fixed location is known. The apparatus comprises a directional receiver and circuitry on the water craft for determining the azimuth and depression angle of a sonar source at the fixed location relative to the water craft, and means for displaying these angles independently on a polar coordinate system.

    P.p.i. display utilizing magnetic recording apparatus
    4.
    发明授权
    P.p.i. display utilizing magnetic recording apparatus 失效
    P.P.I. 显示器利用磁记录装置

    公开(公告)号:US3699587A

    公开(公告)日:1972-10-17

    申请号:US3699587D

    申请日:1971-07-22

    Applicant: HONEYWELL INC

    Inventor: CURRIE WILLIAM E

    CPC classification number: G09G3/008 G01S7/04

    Abstract: A P.P.I. type display uses a display face having a suspension of magnetically orientable and light reflective particles which are orientable between two incident light reflecting states. A rotating erasing means is used to uniformly orient the particles into the first state while a rotating recording means carrying discrete recording elements is selectively actuated to orient selected ones of the particles into the second state. The erasing means and recording means are mounted on separate arms connected together at one end to a common motor driven shaft located at the center of the display face and perpendicular thereto.

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