Airborne weather radar system with aircraft altitude and antenna tilt
angle dependent sensitivity time control
    7.
    发明授权
    Airborne weather radar system with aircraft altitude and antenna tilt angle dependent sensitivity time control 失效
    机载天气雷达系统具有飞机高度和天线倾角依赖灵敏度时间控制

    公开(公告)号:US5311184A

    公开(公告)日:1994-05-10

    申请号:US23516

    申请日:1993-02-26

    申请人: Daryal Kuntman

    发明人: Daryal Kuntman

    IPC分类号: G01S7/34 G01S13/95

    CPC分类号: G01S13/953 G01S7/34

    摘要: Sensitivity time control (STC) data for an airborne weather radar system is provided as a function of aircraft altitude and radar system antenna tilt angle to normalize radar return signals at high as well as low aircraft altitudes. In one form of the invention the STC data is used to adjust the gain of a signal applied to a radar system received by a system antenna and in another form of the invention the STC data is used to establish a desired threshold for said signal.

    摘要翻译: 作为飞机高度和雷达系统天线倾角的函数,提供了一种机载气象雷达系统的灵敏度时间控制(STC)数据,以便在高和低飞机高度标准化雷达回波信号。 在本发明的一种形式中,STC数据用于调整应用于由系统天线接收的雷达系统的信号的增益,并且在本发明的另一形式中,STC数据用于建立所述信号的期望阈值。

    Method and apparatus for implementing automatic tilt control of a radar antenna on an aircraft
    8.
    发明授权
    Method and apparatus for implementing automatic tilt control of a radar antenna on an aircraft 有权
    实现飞机上雷达天线自动倾斜控制的方法和装置

    公开(公告)号:US06236351B1

    公开(公告)日:2001-05-22

    申请号:US09348648

    申请日:1999-07-06

    IPC分类号: G01S1395

    摘要: A method and apparatus for automatically controlling the tilt of a radar antenna to avoid ground clutter returns while scanning the weather formations of most interest. In one embodiment a terrain database is utilized to determine tilt angles for different terrain cells. The tilt angle is determined starting at the aircraft position and working out to the radar range. If a tilt angle for a more distant cell is less than for a nearer cell it is ignored taking shadowing into account. In another embodiment the weighted tilt angle frequencies are entered into a histogram and the histogram is scanned to obtain a tilt angle resulting in an acceptable amount of ground clutter.

    摘要翻译: 一种用于在扫描最感兴趣的天气层时自动控制雷达天线的倾斜以避免地面杂波返回的方法和装置。 在一个实施例中,使用地形数据库来确定不同地形单元的倾斜角度。 从飞机位置开始确定倾斜角度,并计算出雷达范围。 如果一个更远的单元格的倾斜角度小于一个较近的单元格,那么忽略它会被忽略。 在另一个实施例中,将加权倾斜角频率输入到直方图中,并且扫描直方图以获得导致可接受的地面杂波量的倾斜角。