Methods and systems for maintaining a position during hovering operations
    1.
    发明授权
    Methods and systems for maintaining a position during hovering operations 有权
    在悬停操作期间保持位置的方法和系统

    公开(公告)号:US07248208B2

    公开(公告)日:2007-07-24

    申请号:US10865407

    申请日:2004-06-10

    IPC分类号: G01S13/08

    CPC分类号: G01S13/882 G05D1/0858

    摘要: A method for maintaining a position of a hovering vehicle that incorporates a radar altimeter is described. The method includes receiving signals at the radar altimeter based on a change of horizontal direction, operating the radar altimeter to generate a Doppler frequency spectrum based on the received signals, and determining a change in vehicle direction and velocity which will reduce a width of the Doppler frequency spectrum of the received signals. A radar altimeter which generates the Doppler frequency spectrum is also described.

    摘要翻译: 描述了一种维持包括雷达高度计的悬停车辆的位置的方法。 该方法包括基于水平方向的变化在雷达高度计上接收信号,操作雷达高度计以基于接收到的信号产生多普勒频谱,并确定车辆方向和速度的变化,这将减小多普勒的宽度 接收信号的频谱。 还描述了产生多普勒频谱的雷达高度计。

    Adaptive filtering for altimeters
    2.
    发明授权
    Adaptive filtering for altimeters 有权
    高度计的自适应滤波

    公开(公告)号:US07725220B2

    公开(公告)日:2010-05-25

    申请号:US11466819

    申请日:2006-08-24

    IPC分类号: G01C23/00

    CPC分类号: G01C23/00 G01C5/005

    摘要: A method of processing altitude measurements for an aircraft is disclosed. The method involves filtering raw altimeter data within an altimeter to substantially limit random variations in the altitude measurements for one or more altimeter measurement profiles.

    摘要翻译: 公开了一种处理飞机高度测量的方法。 该方法涉及在高度计内过滤原始高度计数据,以基本上限制一个或多个高度计测量轮廓的高度测量值的随机变化。

    ADAPTIVE FILTERING FOR ALTIMETERS
    3.
    发明申请
    ADAPTIVE FILTERING FOR ALTIMETERS 有权
    自适应过滤器

    公开(公告)号:US20080051948A1

    公开(公告)日:2008-02-28

    申请号:US11466819

    申请日:2006-08-24

    IPC分类号: G01C23/00

    CPC分类号: G01C23/00 G01C5/005

    摘要: A method of processing altitude measurements for an aircraft is disclosed. The method involves filtering raw altimeter data within an altimeter to substantially limit random variations in the altitude measurements for one or more altimeter measurement profiles.

    摘要翻译: 公开了一种处理飞机高度测量的方法。 该方法涉及在高度计内过滤原始高度计数据,以基本上限制一个或多个高度计测量轮廓的高度测量值的随机变化。