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    Optical and radio frequency sensor
    11.
    发明授权
    Optical and radio frequency sensor 有权

    公开(公告)号：US11211991B2

    公开(公告)日：2021-12-28

    申请号：US16276537

    申请日：2019-02-14

    Applicant: RAYTHEON COMPANY

    Inventor： Sean D. Keller ,  Gerald P. Uyeno ,  Benn Gleason

    IPC: H04B7/08 ,  H01Q21/00 ,  G01S17/89 ,  G02B27/10 ,  H04L5/22 ,  G02B5/20

    Abstract: A sensing system. In some embodiments, the sensing system includes an imaging radio frequency receiver, an imaging radio frequency to optical converter, an imaging optical receiver, an optical beam combiner, and an imaging optical detector. The optical beam combiner is configured to combine an optical signal of the imaging radio frequency to optical converter, and an optical signal of the imaging optical receiver. In operation, the imaging radio frequency receiver, the imaging radio frequency to optical converter, and the optical beam combiner together form, on the imaging optical detector, an optical image of a radio frequency scene within a field of view of the imaging radio frequency receiver, and the imaging optical receiver and the optical beam combiner together form, on the imaging optical detector, an optical image of an optical scene within a field of view of the imaging optical receiver.

    NEGATIVE OBSTACLE DETECTOR
    18.
    发明申请
    NEGATIVE OBSTACLE DETECTOR 有权

    公开(公告)号：US20170176990A1

    公开(公告)日：2017-06-22

    申请号：US14974024

    申请日：2015-12-18

    Applicant: RAYTHEON COMPANY

    Inventor： Sean D. Keller ,  Gerald P. Uyeno ,  John R. Becker

    IPC: G05D1/00 ,  G01S17/42 ,  G01S17/93

    CPC classification number: G05D1/0088 ,  G01S7/4802 ,  G01S7/4817 ,  G01S17/42 ,  G01S17/936

    Abstract: An obstacle detector configured to identify negative obstacles in a vehicle's path responsive to steering a laser beam to scan high priority areas in the vehicle's path is provided. The high priority areas can be identified dynamically in response to the terrain, speed, and/or acceleration of the vehicle. In some examples, the high priority areas are identified based on a projected position of the vehicles tires. A scan path for the laser, scan rate, and/or a scan location can be dynamically generated to cover the high priority areas.

    OPTICAL NON-UNIFORMITY CORRECTION (NUC) FOR ACTIVE MODE IMAGING SENSORS
    19.
    发明申请
    OPTICAL NON-UNIFORMITY CORRECTION (NUC) FOR ACTIVE MODE IMAGING SENSORS 有权
    用于主动模式成像传感器的光学非均匀校正（NUC）

    公开(公告)号：US20160065956A1

    公开(公告)日：2016-03-03

    申请号：US14476199

    申请日：2014-09-03

    Applicant: Raytheon Company

    Inventor： Gerald P. Uyeno ,  Sean D. Keller ,  David D. Acton

    IPC: H04N17/00

    CPC classification number: H04N17/002 ,  A62B1/04 ,  H04N5/2176 ,  H04N5/2256

    Abstract: Optical non-uniformity correction (NUC) of an active mode image sensor scans a spot over a portion of the sensor's FOV within a frame time so that the net response of the sensor is approximately uniform. Scanning the laser spot simultaneously performs the NUC and provides the illumination of the FOV for imaging the scene. The laser spot is suitably scanned in an overlapping geometrical pattern relative to a line-of-sight of the sensor's imager while modulating a spacing between overlapping laser spots, the size of the spot, a dwell time of the laser spot or the energy of the laser spot or combinations thereof as a function of the scan position of the laser spot so that the laser illumination is inversely proportional to the imager response at the scan position of the laser spot. A liquid crystal waveguide may be used to form and scan the small laser spot over the FOV within the frame time.

    Abstract translation: 活动模式图像传感器的光学非均匀性校正（NUC）在帧时间内扫描传感器FOV的一部分上的点，使得传感器的净响应近似均匀。 扫描激光点同时执行NUC并提供用于成像场景的FOV的照明。 激光光斑相对于传感器成像器的视线适当地以重叠的几何图案扫描，同时调制重叠的激光点之间的间距，斑点的尺寸，激光光斑的停留时间或者激光点的能量 激光点或其组合作为激光光斑的扫描位置的函数，使得激光照射与激光​​光斑的扫描位置处的成像器响应成反比。 可以使用液晶波导在帧时间内在FOV上形成和扫描小的激光点。

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