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    Wide field scanning laser obstacle awareness system
    1.
    发明公开
    Wide field scanning laser obstacle awareness system 有权
    激光系统与障碍物检测采样广阔

    公开(公告)号：EP1626292A3

    公开(公告)日：2006-04-05

    申请号：EP05077648.3

    申请日：2002-07-18

    Applicant: ROSEMOUNT AEROSPACE INC.

    Inventor： JAMIESON, James R. ,  RAY, Mark D.

    IPC: G01S17/42 ,  G01S7/481 ,  G01S17/02 ,  G01S17/93 ,  G01C23/00

    CPC classification number: G01S17/026 ,  B64D45/08 ,  G01C23/00 ,  G01P5/26 ,  G01S7/481 ,  G01S7/4811 ,  G01S7/4812 ,  G01S7/4813 ,  G01S7/4817 ,  G01S7/483 ,  G01S7/499 ,  G01S7/51 ,  G01S17/42 ,  G01S17/58 ,  G01S17/87 ,  G01S17/88 ,  G01S17/933 ,  G02B26/101

    Abstract: A wide field scanning laser obstacle awareness system (LOAS) for use on-board an aircraft (228) is provided. The LOAS serves for alerting an operator of obstacles (38,80,82,84,216) posing a risk of collision with said aircraft. The system comprising:

    a light source (10,12) for generating a pulsed laser beam of light;
    a light detector (22);
    a plurality of optical elements (16) for directing said pulsed laser beam from said system with a predetermined pattern (74) scanned azimuthally over a wide field, said plurality of optical elements also for receiving reflections of said pulsed laser beam from at least one object along said predetermined pattern and directing said laser beam reflections to said light detector.

    The predetermined pattern includes a variation in elevation of the directed pulsed laster beam in relation to an elevation of the aircraft.
    Additionally, the system has means (130) for determining substantially the azimuth position of the directed pulsed laser beam, means (114) for determining substantially the elevation of the directed pulsed laser beam, and a display apparatus (154) including an image screen for displaying a limited field of view, wherein the wide field of view of the system extends substantially beyond the field of view of the image screen.
    A processor means (88) is coupled to said light detector, display apparatus, azimuth position determining means and elevation determining means for determining the location of the at least one object in range, azimuth and elevation in relation to a flight path of the aircraft. The processor means drives the display apparatus to display an indication representing the at least one object in range, azimuth and elevation.
    The indication of the at least one object comprises an image of a bar. The bar image (218,220) is disposed vertically at the far left of the screen of the display apparatus when the object location is azimuthally outside the field of view of the display apparatus to the left, and the bar image is disposed vertically at the far right of the screen of the display apparatus when the object location is azimuthally outside the field of view of the display apparatus to the right.

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