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    UNMANNED VEHICLE RECOGNITION AND THREAT MANAGEMENT
    11.
    发明公开
    UNMANNED VEHICLE RECOGNITION AND THREAT MANAGEMENT 审中-公开

    公开(公告)号：US20240029572A1

    公开(公告)日：2024-01-25

    申请号：US18374376

    申请日：2023-09-28

    申请人： Digital Global Systems, Inc.

    发明人： David William Kleinbeck

    IPC分类号： G08G5/00 ,  G06N3/08 ,  G01S3/04 ,  G01S3/46 ,  G06N7/01

    CPC分类号： G08G5/0026 ,  G08G5/0069 ,  G06N3/08 ,  G01S3/046 ,  G01S3/043 ,  G01S3/46 ,  G06N7/01

    摘要： Systems and methods for automated unmanned aerial vehicle recognition. A multiplicity of receivers captures RF data and transmits the RF data to at least one node device. The at least one node device comprises a signal processing engine, a detection engine, a classification engine, and a direction finding engine. The at least one node device is configured with an artificial intelligence algorithm. The detection engine and classification engine are trained to detect and classify signals from unmanned vehicles and their controllers based on processed data from the signal processing engine. The direction finding engine is operable to provide lines of bearing for detected unmanned vehicles.

    RF polarimeters with optical delay lines
    12.
    发明授权
    RF polarimeters with optical delay lines 有权

    公开(公告)号：US11874386B2

    公开(公告)日：2024-01-16

    申请号：US17365984

    申请日：2021-07-01

    申请人： Cobham Advanced Electronic Solutions, Inc.

    发明人： Arnold N. Feineman

    IPC分类号： G01S5/04 ,  G01S3/48 ,  G01S3/74 ,  G01S3/04 ,  G01S3/46 ,  G01S3/50

    CPC分类号： G01S3/48 ,  G01S3/043 ,  G01S3/74 ,  G01S3/46 ,  G01S3/50

    摘要： Systems and methods are provided for determining a polarization state of an input RF signal. Two distinct RF antennas receive the input RF signal and output a first antenna signal and a second antenna signal. Polarizsations of the first and second antenna signals are orthogonal to one another. The first antenna signal is converted to a first optical signal, and the first optical signal is passed through a first optical signal to introduce a first delay. The delayed first optical signal is converted to a first RF signal. An amplitude ratio and a phase difference are determined between the first RF signal and a second RF signal that is associated with the second antenna and optionally includes a second delay. A polarization angle or polarization type of the input RF signal is determined based on the amplitude ratio and phase difference of the first and second RF signals.

    SYSTEMS AND METHODS FOR DETERMINING POSITION AND/OR DIRECTION OF AN EMITTER
    15.
    发明公开
    SYSTEMS AND METHODS FOR DETERMINING POSITION AND/OR DIRECTION OF AN EMITTER 审中-公开

    公开(公告)号：US20230358842A1

    公开(公告)日：2023-11-09

    申请号：US18246208

    申请日：2021-08-30

    申请人： Elta Systems Ltd.

    发明人： Iftah LIPKIN

    IPC分类号： G01S3/46 ,  G01S3/04 ,  H01Q1/27 ,  G01S5/06

    CPC分类号： G01S3/46 ,  G01S3/043 ,  H01Q1/27 ,  G01S5/06

    摘要： A system comprises an array of antennas suitable for intercepting electromagnetic waves, one or more sensors, wherein said one or more sensors are configured to provide data informative of a position of each of a plurality of the antennas over time, wherein each of a plurality of the antennas is linked to a non-rigid portion, thereby undergoing displacement upon displacement of the non-rigid portion, wherein data informative of the electromagnetic waves intercepted by the array and data informative of the position of the plurality of antennas over time are usable for determining data informative of at least one of a position and a direction of at least one emitter of the electromagnetic waves.

    LINE-OF-SIGHT DETECTOR AND COMMUNICATION SYSTEM IN SUB-THZ AND THZ RANGES
    16.
    发明公开
    LINE-OF-SIGHT DETECTOR AND COMMUNICATION SYSTEM IN SUB-THZ AND THZ RANGES 审中-公开

    公开(公告)号：US20230352853A1

    公开(公告)日：2023-11-02

    申请号：US18026668

    申请日：2021-09-29

    申请人： Michael Shur

    发明人： Michael Shur

    IPC分类号： H01Q23/00 ,  G01S3/04 ,  G01S3/74 ,  H01L31/113

    CPC分类号： H01Q23/00 ,  G01S3/043 ,  G01S3/74 ,  H01L31/1136

    摘要： One embodiment provides a line of sight detector. The line of sight detector includes a first TeraFET (field effect transistor) including a first source, a first drain, a first gate, and a first channel having a first end and a second end. The line of sight detector further includes a first source antenna coupled to the first source; a first drain antenna coupled to the first drain; and a third antenna. Each antenna is configured to receive an incident radiation signal having a frequency in a sub terahertz or a terahertz frequency range. Each antenna is positioned a respective distance from each other antenna. Each distance is less than one wavelength of the incident radiation signal.

    Method for adjusting phase of signal to be input to multiple antennas, and electronic device implementing method
    17.
    发明授权
    Method for adjusting phase of signal to be input to multiple antennas, and electronic device implementing method 有权

    公开(公告)号：US11789107B2

    公开(公告)日：2023-10-17

    申请号：US17269144

    申请日：2019-08-22

    申请人： Samsung Electronics Co., Ltd.

    发明人： Sungchul Park

    IPC分类号： G01S3/50 ,  H01Q3/26 ,  H01Q21/06 ,  H04B7/04 ,  G01S3/04 ,  H04B7/08 ,  H04B7/0426

    CPC分类号： G01S3/50 ,  G01S3/043 ,  H01Q3/2617 ,  H01Q21/062 ,  H01Q21/065 ,  H04B7/043 ,  H04B7/086

    摘要： Disclosed are various embodiments relating to a method and device for estimating the angle of a base station transmission beam by calculating the time difference between reception signals acquired through simultaneous beam sweeping to multiple antenna arrays. According to various embodiments, an electronic device may comprise: one or more first antennas; one or more second antennas spaced predetermined distance apart from the one or more first antennas; and a communication circuit electrically connected to the one or more first antennas and the one or more second antennas, wherein the communication circuit acquires a designated signal output from a base station as a first reception signal through the one or more first antennas and a second reception signal through the one or more second antennas, the first reception signal and the second reception signal are transmitted as one base station transmission beam, the time difference between the first reception signal and the second reception signal is obtained, the angle of the one base station transmission beam is calculated at least on the basis of the predetermined distance and the time difference, and the phase of a signal to be input to the one or more first antennas or the one or more second antennas is adjusted on the basis of the angle. Various embodiments are possible.

    Direction of arrival estimation
    18.
    发明授权
    Direction of arrival estimation 有权

    公开(公告)号：US11782118B2

    公开(公告)日：2023-10-10

    申请号：US17509543

    申请日：2021-10-25

    申请人： MACQUARIE UNIVERSITY

    发明人： Sam Reisenfeld ,  Audri Biswas

    IPC分类号： G01S3/04 ,  G01S3/48 ,  G01S3/72 ,  G01S3/80

    CPC分类号： G01S3/043 ,  G01S3/48 ,  G01S3/72 ,  G01S3/8003

    摘要： Iterative methods for direction of arrival estimation of a signal at a receiver with a plurality of spatially separated sensor elements are described. A quantized estimate of the angle of arrival is obtained from a compressive sensing solution of a set of equations. The estimate is refined in a subsequent iteration by a computed error based a quantized estimate of the direction of arrival in relation to quantization points offset from the quantization points for the first quantized estimate of the angle of arrival. The iterations converge on an estimated direction of arrival.

    System and method for estimating the angle of arrival using antenna arrays
    20.
    发明授权
    System and method for estimating the angle of arrival using antenna arrays 有权

    公开(公告)号：US11768266B2

    公开(公告)日：2023-09-26

    申请号：US17208949

    申请日：2021-03-22

    申请人： WiTagg, Inc.

    发明人： Jing Wang

    IPC分类号： G01S5/04 ,  G01S3/04 ,  G01S3/46 ,  H04W76/10 ,  H01Q21/06 ,  G01S3/50 ,  G01S3/48

    CPC分类号： G01S3/043 ,  G01S3/46 ,  G01S3/48 ,  G01S3/50 ,  H01Q21/06 ,  H04W76/10

    摘要： Approaches are described for antenna configuration in an antenna array of limited array size and channel state information (CSI) collection and analysis, to improve accuracy of angle of arrival (AoA) estimations for localizing a client device's position. Signals can be received from groups of antennas and CSI data can be generated from the signals. The CSI data can be combined, where the combined CSI data represents CSI data measurements of multiple signals received from a plurality of antenna subsets, without requiring physical installation of additional antennas to the limited antenna array to make the CSI data measurements. The angle of arrival (AoA) of the signals is estimated based on the combined CSI, and the AoA estimation can be used to determine the client device's location, and for other location services, such as identifying a person's location, tracking and managing inventory of objects, commute prediction, and the like.