Mobile device based gait biometrics
    521.
    发明授权

    公开(公告)号:US09811720B2

    公开(公告)日:2017-11-07

    申请号:US14445149

    申请日:2014-07-29

    Inventor: Yu Zhong

    CPC classification number: G06K9/00348 G06K9/46

    Abstract: A system and method for identifying an individual based, at least in part, on their gait is presented. First, acceleration data is received from an accelerometer carried by a person. The acceleration data corresponds to a gait of the person. Rotational invariant values that are independent of a rotational position of the accelerometer are calculated based, at least in part, on the acceleration data. A gait dynamics image (GDI) is calculated based, at least in part, on the rotational invariant values. The GDI is matched to one of a set predetermined GDIs to identify the person.

    Five-wave optical parametric oscillator with V-ring geometry

    公开(公告)号:US09599875B2

    公开(公告)日:2017-03-21

    申请号:US14854646

    申请日:2015-09-15

    Inventor: Nathan E. Rines

    CPC classification number: G02F1/3532 G02F2001/3542

    Abstract: An optical apparatus to provide several light bands on a single coaligned beam line or axis. The apparatus generally comprises five main components: a pump, a fold mirror, an input coupler, a nonlinear optical (NLO) crystal, and an output coupler. Alternatively, the present invention may comprise four main components, namely, a pump, an acute porro prism, a NLO crystal, and an input-output coupler. The pump input beam makes two passes through the nonlinear optical crystal and generates two new colors, having different wavelengths, during each pass through the nonlinear optical crystal.

    Tracking projectile trajectory with multiple sensors
    530.
    发明授权
    Tracking projectile trajectory with multiple sensors 有权
    跟踪具有多个传感器的射弹轨迹

    公开(公告)号:US09557405B2

    公开(公告)日:2017-01-31

    申请号:US14821826

    申请日:2015-08-10

    CPC classification number: G01S5/16 G01S5/021

    Abstract: Disclosed is an example for determining a projectile trajectory with at least two sensors. In one example, the projectile trajectory is estimated using a first sensor having a first angular range. Further, the projectile trajector is estimated using a second sensor having a second angular range. The first sensor and the second sensor are disposed on a platform at different spatial locations. Furthermore, a discrepancy in the projectile trajectory is determined when the projectile moves from the first angular range to the second angular range. The discrepancy is created due to the different spatial locations of the first sensor and the second sensor. An actual projectile trajectory is determined by compensating for the discrepancy in the projectile trajectory using the estimated discrepancy.

    Abstract translation: 公开了用至少两个传感器确定射弹轨迹的示例。 在一个示例中,使用具有第一角度范围的第一传感器来估计射弹轨迹。 此外,使用具有第二角度范围的第二传感器来估计射弹轨迹。 第一传感器和第二传感器设置在不同空间位置的平台上。 此外,当弹丸从第一角度范围移动到第二角度范围时,确定射弹轨迹的差异。 由于第一传感器和第二传感器的空间位置不同,产生差异。 通过使用估计的差异来补偿射弹轨迹的差异来确定实际的射弹轨迹。

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