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70 条记录 (耗时 0.03 秒)

    Level gauging systems
    31.
    发明授权
    Level gauging systems 失效
    液位计系统

    公开(公告)号：US4425793A

    公开(公告)日：1984-01-17

    申请号：US266869

    申请日：1981-05-26

    申请人： David Turton ,  Lionel R. F. Thompson

    发明人： David Turton ,  Lionel R. F. Thompson

    IPC分类号： G01S13/18 ,  G01S13/522 ,  G01S13/88 ,  G01F23/28

    CPC分类号： G01S13/522 ,  G01S13/18 ,  G01S13/88

    摘要： To measure the height of the surface of a fluent material, such as coal, in a bunker or container, pulsed radiation from a microwave source is beamed down on to said surface, and the return radiation reflected from the surface is processed to detect pulses in the waveform with time-varying amplitudes, and therefore denoting returns from the fluent material, and to reject fixed shape pulses denoting returns from the fixed structure of the bunker. To discriminate between returns of time-varying amplitude (i) from the fluent material surface and (ii) from material flowing in from an in-feed, the higher frequency components, denoting the material flowing in, are filtered out.

    摘要翻译： 为了测量诸如煤之类的流体材料在掩体或容器中的表面的高度，将来自微波源的脉冲辐射向下射向所述表面，并且从表面反射的返回辐射被处理以检测脉冲 具有时变幅度的波形，因此表示来自流动材料的返回，并且拒绝表示从掩体的固定结构返回的固定形状脉冲。 为了区分来自流动材料表面的时变幅度（i）和（ii）从进给中流入的材料的回报，表示流入的材料的较高频率分量被滤出。

    Automatic ground clutter rejection in weather pulse radar system
    32.
    发明授权
    Automatic ground clutter rejection in weather pulse radar system 失效
    天气脉冲雷达系统中的自动地面杂波抑制

    公开(公告)号：US4318100A

    公开(公告)日：1982-03-02

    申请号：US122498

    申请日：1980-02-19

    申请人： Toshio Shimizu ,  Atsushi Wakabayashi ,  Shuichi Goto

    发明人： Toshio Shimizu ,  Atsushi Wakabayashi ,  Shuichi Goto

    IPC分类号： G01S13/522 ,  G01S13/95

    CPC分类号： G01S13/522 ,  G01S13/951

    摘要： In a weather radar system wherein echo signals are linear-detected from the waves received at the radar, each one of echo signals being compared with the later one to derive AC component, and the mean power of the weather echo estimated from the power of the AC component, the linear-detected echo signals are amplitude suppressed before compared. The amplitude suppression effectively removes the errors due to the fluctuation of ground clutter, and the variation of AC power of weather echo due to the existence of ground clutter. An amplitude suppressor is used which has an amplitude suppressing property expressed by Y=X.sup.k, where X is an amplitude of the input signal, Y is an amplitude of the output signal, and k is a constant (0

    摘要翻译： 在从雷达接收到的波形中回波信号被线性检测的气象雷达系统中，将每一个回波信号与较晚的回波信号进行比较以得出AC分量，并且从该功率估计出的天气回波的平均功率 AC分量，线性检测回波信号在比较之前被幅度抑制。 振幅抑制有效消除了由于地面杂波的波动引起的误差，以及由于地面杂波的存在导致的天气回波的交流电力的变化。 使用具有由Y = Xk表示的幅度抑制特性的幅度抑制器，其中X是输入信号的幅度，Y是输出信号的幅度，k是常数（0

    Helicopter rotating blade detection system
    33.
    发明授权
    Helicopter rotating blade detection system 失效
    直升机旋转叶片检测系统

    公开(公告)号：US4275396A

    公开(公告)日：1981-06-23

    申请号：US84220

    申请日：1979-10-12

    申请人： Omar J. Jacomini

    发明人： Omar J. Jacomini

    IPC分类号： G01S7/41 ,  G01S13/522 ,  G01S13/02

    CPC分类号： G01S13/522 ,  G01S7/415

    摘要： An airborne pulse doppler radar set generally includes a moving target indicator (MTI) system for detecting moving aircraft within its scanning purview. To avoid processing undesirable clutter, the MTI system includes a clutter cancelling type filter for rejecting doppler shift frequency signals reflected from objects moving at velocities below a predetermined minimum velocity value. Unfortunately, the doppler shift frequencies representative of the body velocity of most helicopters fall within this clutter repetition band and may go undetected by the MTI system. To detect these helicopters, a helicopter detection system which operates on the specular flash energy of the doppler shift frequency signals reflected from the rotating blades of a helicopter is provided. The helicopter detection system passes substantially the received reflected radar signals that have doppler shift frequencies representative of the helicopter rotating blade velocities, derives a threshold value based on the values of the passed signals, and generates detection signals at times corresponding to the passed signal values which are at least that of the derived threshold value. In addition, the helicopter detection system is capable of inhibiting the generation of the detection signals at time corresponding to the reception of interference type radar signals by the radar set. Furthermore, an unambiguous range of each detected helicopter may be computed. Moreover, the helicopter detection system has the capability of distinguishing between detected targets having even and odd numbers rotating blades.

    摘要翻译： 机载脉冲多普勒雷达组通常包括用于在其扫描范围内检测移动飞行器的移动目标指示器（MTI）系统。 为了避免处理不期望的混乱，MTI系统包括一个杂波消除型滤波器，用于拒绝从低于预定最小速度值的速度移动的物体反射的多普勒频移信号。 不幸的是，代表大多数直升机的体速的多普勒频移落在该杂波重复频带内，并且可能未被MTI系统检测到。 为了检测这些直升机，提供了一种直升机检测系统，其对从直升机的旋转叶片反射的多普勒频移信号的镜面闪光能量进行操作。 直升机检测系统基本上通过了具有代表直升机旋转叶片速度的多普勒频移频率的接收的反射雷达信号，基于通过的信号的值导出阈值，并且在对应于所通过的信号值的时间产生检测信号， 至少是导出的阈值的值。 此外，直升机检测系统能够在与雷达组的干扰型雷达信号的接收相对应的时间内抑制检测信号的产生。 此外，可以计算每个检测到的直升机的明确范围。 此外，直升机检测系统具有区分具有偶数和奇数旋转叶片的检测目标的能力。

    SYSTEM AND METHOD FOR IMPROVING A BASKETBALL PLAYER'S SHOOTING
    39.
    发明申请
    SYSTEM AND METHOD FOR IMPROVING A BASKETBALL PLAYER'S SHOOTING 有权

    公开(公告)号：US20210283480A1

    公开(公告)日：2021-09-16

    申请号：US17332055

    申请日：2021-05-27

    申请人： Shoot-A-Way, Inc.

    发明人： John G. Joseph ,  Troy David Geiser ,  Albert Charles Abnett

    IPC分类号： A63B69/00 ,  A63B69/40 ,  A63B24/00 ,  G09B19/00 ,  G01S13/88 ,  G01S13/66 ,  A63B47/02 ,  G01S13/522 ,  A63B71/06

    摘要： Systems and methods for facilitating access to shooting statistics data for a basketball player are provided. A user interface receives a user selection of identifying information for the basketball player and a subset of plurality of pass receipt locations located about a basketball playing surface for an ejector to pass said basketballs to as part of a basketball practice drill for the basketball player. A detector detects passage of basketballs through a rim of a basketball goal to indicate a made basketball shot. A control system commands the ejector to launch at least one basketball towards each pass receipt location in the subset. One or more remote electronic devices electronically store data indicating the player's success in making shots from the pass receipt location in the subset in association with the identifying information.

    System and method for improving a basketball player's shooting
    40.
    发明授权
    System and method for improving a basketball player's shooting 有权

    公开(公告)号：US11083944B2

    公开(公告)日：2021-08-10

    申请号：US16989408

    申请日：2020-08-10

    申请人： Shoot-A-Way, Inc.

    发明人： John G. Joseph ,  Troy David Geiser ,  Albert Charles Abnett

    IPC分类号： A63B69/00 ,  A63B69/40 ,  A63B24/00 ,  G09B19/00 ,  G01S13/88 ,  G01S13/66 ,  A63B47/02 ,  G01S13/522 ,  A63B71/06 ,  A63B63/00

    摘要： Systems and methods for providing performance feedback regarding a basketball practice session are provided. A user interface associated with a portable basketball launching machine accepts user input indicating a number of different locations at a basketball playing area for the portable basketball launching machine to provide basketball passes for a player to catch and shoot towards a basketball goal as part of the basketball practice session. A detection device ascertains whether the player succeeded in making a basketball goal for each of the basketball passes. A processor receives data from the detection device and generates a representation of a basketball court overlaid with data indicating where the basketball passes were provided and whether said player was successful in making basketball goals.