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    OPTICAL FEED NETWORK USING A FREE-SPACE OPTICAL MODULATOR FOR RF PHASED ANTENNA ARRAYS
    31.
    发明申请
    OPTICAL FEED NETWORK USING A FREE-SPACE OPTICAL MODULATOR FOR RF PHASED ANTENNA ARRAYS 有权

    公开(公告)号：US20210313685A1

    公开(公告)日：2021-10-07

    申请号：US16837654

    申请日：2020-04-01

    Applicant: Raytheon Company

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

    IPC: H01Q3/26 ,  H01Q3/46

    Abstract: An optical feed network (OFN) for an RF phased antenna array includes a single free-space optical beamformer that supports all of the RF electrical feed signals for the RF phased antenna array to steer an RF beam. The free-space optical beamformer can more easily scale to accommodate larger array sizes than either the discrete fiber channel or PIC implementations. Furthermore, certain embodiments of the optical beamformer avoid the complexity of having to compute FFTs for each channel to steer the beam, instead relying on the inherent function of an imaging lens to perform the FFT, which in turn facilitates rapid steering.

    SENSOR FOR DEGRADED VISUAL ENVIRONMENT
    33.
    发明申请
    SENSOR FOR DEGRADED VISUAL ENVIRONMENT 审中-公开

    公开(公告)号：US20200343631A1

    公开(公告)日：2020-10-29

    申请号：US16396574

    申请日：2019-04-26

    Applicant: RAYTHEON COMPANY

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

    IPC: H01Q3/26 ,  H04B10/40 ,  G01S7/491 ,  G02B27/10

    Abstract: A sensing system. In some embodiments, the system includes a first imaging radio frequency receiver, a second imaging radio frequency receiver, a first optical beam combiner, a first imaging optical receiver, a second optical beam combiner, and an optical detector array. The first optical beam combiner may be configured to combine optical signals of the imaging radio frequency receivers. The second optical beam combiner may be configured to combine the optical signals of the imaging radio frequency receivers, and the optical signal of the first imaging optical receiver.

    OPTICAL AND RADIO FREQUENCY SENSOR
    34.
    发明申请
    OPTICAL AND RADIO FREQUENCY SENSOR 审中-公开

    公开(公告)号：US20200266877A1

    公开(公告)日：2020-08-20

    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 ,  G02B27/10 ,  H01Q21/00 ,  G02B5/20 ,  H04L5/22 ,  G01S17/89

    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.

    Optical system for object detection and location
    36.
    发明授权
    Optical system for object detection and location 有权

    公开(公告)号：US10267915B2

    公开(公告)日：2019-04-23

    申请号：US15175807

    申请日：2016-06-07

    Applicant: RAYTHEON COMPANY

    Inventor： Gerald P. Uyeno ,  Sean D. Keller

    IPC: G01S17/02 ,  G01S17/66 ,  G01S17/42 ,  G02F1/29 ,  G01S7/48 ,  G01S17/89 ,  G01S7/481 ,  G01S7/484 ,  G01S7/486 ,  G01S7/487 ,  G01S17/10

    Abstract: Optical systems and methods for object detection and location. One example of an optical system includes a laser radar optical source positioned to emit a pulsed laser beam, a non-mechanical beamsteering device positioned to scan the beam in a linear scan over a first area of a scene, a laser radar detector positioned to receive and integrate a reflection of the beam, a read-out integrated circuit (ROIC) configured to provide a first read-out signal based on the integrated reflection, and a controller configured to receive the first read-out signal, determine a range to the first area based on a time of flight of the pulsed laser beam, and identify a presence of an object within the scene based on a signal level of the first read-out signal, the first signal level corresponding to a reflectivity of a portion of the object within the first area of the scene.

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