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    Method and system for performing signal analysis using a hybrid photonic-electronic processor
    91.
    发明授权
    Method and system for performing signal analysis using a hybrid photonic-electronic processor 有权

    公开(公告)号：US11901949B2

    公开(公告)日：2024-02-13

    申请号：US18068921

    申请日：2022-12-20

    Applicant: Raytheon Company

    Inventor： Vahid Ataie

    IPC: H04B10/54 ,  H04B10/556 ,  H04B10/50

    CPC classification number: H04B10/541 ,  H04B10/503 ,  H04B10/556

    Abstract: An apparatus for generating a time-delayed product of two independent signals includes a fixed-wavelength laser. A first optical modulator is optically coupled to the fixed-wavelength laser and configured to modulate a fixed wavelength optical carrier with a first input signal of a set of input signals. The apparatus also includes a tunable laser. A second optical modulator is optically coupled to the tunable laser and configured to modulate a tunable optical carrier with a second input signal of the set of input signals. The apparatus also includes a dispersive element coupled to the second optical modulator, a first optical detector coupled to the dispersive element, a third optical modulator optically coupled to the first optical detector and the first optical modulator, an optical 90-degree hybrid element optically coupled to the third optical modulator, and a plurality of optical detectors optically coupled to the optical 90-degree hybrid element.

    Freeform offner spectrometer
    94.
    发明授权
    Freeform offner spectrometer 有权

    公开(公告)号：US11898907B1

    公开(公告)日：2024-02-13

    申请号：US17948153

    申请日：2022-09-19

    Applicant: Raytheon Company

    Inventor： Benjamin James Lewis

    IPC: G01J3/28 ,  G01J3/02 ,  G01J3/04 ,  G01J3/18

    CPC classification number: G01J3/0208 ,  G01J3/04 ,  G01J3/18 ,  G01J3/2823

    Abstract: A spectrometer is configured to form a spectrally resolved image of electromagnetic radiation from an electromagnetic radiation source. The spectrometer can include an optical guide device configured to guide electromagnetic radiation along an optical path. The optical guide device can include a first prism positioned in the optical path. The optical guide device can further include a focusing optic. The first prism can include at least one freeform prism surface that comprises at least some degree of cylindrical curvature having freeform polynomial terms formed thereon, which surface can be a substantially cylindrical, a substantially acylindrical, or a substantially flat surface having freeform polynomial terms formed thereon.

    Photonic integrated circuit with inverted H-tree unit cell design
    95.
    发明授权
    Photonic integrated circuit with inverted H-tree unit cell design 有权

    公开(公告)号：US11894873B2

    公开(公告)日：2024-02-06

    申请号：US17809608

    申请日：2022-06-29

    Applicant: Raytheon Company

    Inventor： Stephen P. Palese ,  Richard L. Kendrick ,  Moe D. Soltani

    IPC: H04B10/11 ,  H04B10/43

    CPC classification number: H04B10/11 ,  H04B10/43

    Abstract: An apparatus includes a photonic integrated circuit having an optical phased array, where the optical phased array includes multiple unit cells. Each unit cell includes multiple antenna elements configured to transmit or receive optical signals, where a first subset of the antenna elements is oriented in a first direction and a second subset of the antenna elements is oriented in a second direction opposite the first direction. Each unit cell also includes multiple signal pathways configured to transport the optical signals to or from the antenna elements, where at least some of the signal pathways have an “H” configuration. Each unit cell further includes multiple phase modulators configured to modify phases of the optical signals being transported through the signal pathways.

    AUTOMATED MISSILE LOADING SYSTEM
    96.
    发明公开
    AUTOMATED MISSILE LOADING SYSTEM 审中-公开

    公开(公告)号：US20240035766A1

    公开(公告)日：2024-02-01

    申请号：US18181540

    申请日：2023-03-09

    Applicant: Raytheon Company

    Inventor： Christopher Alden Greer ,  Brian Gin ,  Nathan Albrand Jones ,  Zachary Boydell ,  Emile M. Szlemko

    IPC: F41A9/09 ,  F41A9/87

    CPC classification number: F41A9/09 ,  F41A9/87

    Abstract: Apparatus and associated methods relate to automatically loading a plurality of hazardous entities into a hazardous-entity container. Such automatic loading is performed by: i) lifting a selected hazardous entity of a plurality of hazardous entities from a stowed position to an elevation of a corresponding hazardous-entity portal of the hazardous-entity container; ii) sensing relative alignment the selected hazardous entity with respect to the corresponding hazardous-entity portal iii) aligning the selected hazardous entity with the corresponding hazardous-entity portal based on the relative alignment sensed by the alignment sensor; iv) evaluating whether an insertion condition is met based at least in part on the relative alignment sensed by the alignment sensor; and v) inserting the selected hazardous entity into its corresponding hazardous-entity portal if the insertion condition is met.

    Optical window with abrasion tolerance
    97.
    发明授权
    Optical window with abrasion tolerance 有权

    公开(公告)号：US11880018B2

    公开(公告)日：2024-01-23

    申请号：US17199602

    申请日：2021-03-12

    Applicant: Raytheon Company

    Inventor： Gary A. Frazier

    IPC: G02B1/115 ,  G01J1/04 ,  B64C1/14 ,  B64C30/00

    CPC classification number: G02B1/115 ,  B64C1/1484 ,  G01J1/0407 ,  B64C30/00

    Abstract: An optical window for a hypersonic vehicle includes a window substrate and an optical coating on the window substrate, with the coating including multiple alternating layers of different materials. The coating may have many layers, for example having five or more alternating bi-layers and may be configured to still perform its optical function with some of the layers removed, such as by ablation of some of the layers through exposure to hypersonic flow. The different materials of the different layers may have different properties, for example with one of the materials being more resistant to ablation and/or chemical reaction than another of the layers. Coatings for anti-reflection additionally include a region of graded optical index between the sequence of bi-layers and the substrate. The hypersonic vehicle may include an optical sensor which operates by receiving light through the optical window.

    Navigation integrity in GPS challenged environments
    98.
    发明授权
    Navigation integrity in GPS challenged environments 有权

    公开(公告)号：US11879736B2

    公开(公告)日：2024-01-23

    申请号：US17018846

    申请日：2020-09-11

    Applicant: Raytheon Company

    Inventor： Taehwan Kim ,  Kenneth L Moore ,  James T. Landon ,  Jarrett M. Perry ,  Benjamin J. Graham

    IPC: G01C21/00

    CPC classification number: G01C21/005

    Abstract: Systems and methods for detecting degraded navigation sensors are based on a policy derived from a Partially Observable Markoff Decision Process (POMDP). Navigation parameters derived from the navigation sensors are provided to individual Kalman filters. A covariance of each of the filters is indicative of a probability of degradation of a sensor from which the navigation parameter is derived. Outputs of the Kalman filters are provided to a master filter. The master filter is compared to a criterion to determine whether there are indicia of a degraded sensor. If such an indicia are present, the Policy is consulted to determine which of the sensors are degraded. Consideration of degraded sensors when navigating a vehicle is inhibited.

    Rotationally stiff key for coupling non-parallel shafts
    99.
    发明授权
    Rotationally stiff key for coupling non-parallel shafts 有权

    公开(公告)号：US11879503B2

    公开(公告)日：2024-01-23

    申请号：US17388109

    申请日：2021-07-29

    Applicant: Raytheon Company

    Inventor： Brian S. Scott ,  Andrew H. Voss

    IPC: F16D1/04 ,  F16D1/08

    CPC classification number: F16D1/04 ,  F16D1/0876

    Abstract: A stiff key provides rigid coupling between a pair of shafts, such as a motor shaft and a rotary position sensor. The key may have a main body and a protrusion from the main body, such as from a middle portion of the main body. One of the protrusion or the main body may engage one part of one of the shafts being coupled together, and the other of the protrusion or the main body may engage a part of the other of the shafts. For example the protrusion may be in a keyway of one shaft and the main body may engage a recess or flat of the other shaft. The key and the coupling may be used in applications where space is at a premium, for example in a missile.

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