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    LIGHTWEIGHT CALIBRATION METHOD FOR DIRECTION FINDING
    5.
    发明公开
    LIGHTWEIGHT CALIBRATION METHOD FOR DIRECTION FINDING 审中-公开

    公开(公告)号：US20240302475A1

    公开(公告)日：2024-09-12

    申请号：US18601079

    申请日：2024-03-11

    申请人： The Regents of the University of Colorado, a body corporate

    发明人： Gaeron R. Friedrichs ,  Mohamed Ali Elmansouri ,  Dejan S. Filopovic

    IPC分类号： G01S3/02 ,  G01S3/04

    CPC分类号： G01S3/026 ,  G01S3/043

    摘要： A direction finding system can be configurable to: (i) access a baseline neural network initially configured to imitate behavior of a two-argument arctangent function; (ii) apply transfer learning to the baseline neural network to generate a calibrated neural network, wherein the transfer learning calibrates the baseline neural network to perform Watson-Watt direction finding without utilizing a lookup table for error correction; (iii) access measurement data acquired via the direction finding sensor array; (iv) generate preprocessed data by applying one or more preprocessing operations to the measurement data; (v) utilize the preprocessed data as input to the calibrated neural network; and (vi) output angle of arrival data, the angle of arrival data comprising output of the calibrated neural network.

    Techniques to disambiguate angle of arrival
    6.
    发明授权
    Techniques to disambiguate angle of arrival 有权

    公开(公告)号：US12085657B2

    公开(公告)日：2024-09-10

    申请号：US17339868

    申请日：2021-06-04

    申请人： APPLE INC.

    发明人： Qiang Chen ,  Robert W. Brumley

    IPC分类号： G01S3/48 ,  G01S3/04 ,  G01S5/04 ,  H01Q5/25

    CPC分类号： G01S3/48 ,  G01S3/043 ,  G01S5/04 ,  H01Q5/25

    摘要： In some aspects, a mobile device may receive, from a transmitting device, the signal by a plurality of antennas. The mobile device may measure one or more phase differences among the signal received at the plurality of antennas. The mobile device may determine a first set of possible values for the angle of arrival that are consistent with the one or more phase differences. The mobile device may measure one or more signal values using one or more sensors of the mobile device. The mobile device may for each of the first set of possible values, determining a confidence score based on the one or more signal values. The mobile device may select, based on the confidence scores, one of the first set of possible values as the angle of arrival.

    METHOD AND APPARATUS FOR DETERMINING THE ANGLE OF DEPARTURE
    9.
    发明公开
    METHOD AND APPARATUS FOR DETERMINING THE ANGLE OF DEPARTURE 审中-公开

    公开(公告)号：US20240168119A1

    公开(公告)日：2024-05-23

    申请号：US18421173

    申请日：2024-01-24

    申请人： DecaWave, Ltd.

    发明人： Michael McLaughlin ,  Jaroslaw Niewczas ,  Igor Dotlic ,  Billy Verso

    IPC分类号： G01S3/48 ,  G01S3/04 ,  H04B7/08

    CPC分类号： G01S3/48 ,  G01S3/043 ,  H04B7/086

    摘要： An ultra-wideband (UWB) communication system comprising a transmitter having two antennas and a receiver having a single receive antenna. Respective selected portions of the UWB signal are transmitted by the transmitter via each of the two transmit antennas and are received at the receive antenna. By comparing the phases of the received signal portions, the phase difference of departure can be determined. From this phase difference the known distance, d, between the transmit antennas the Cartesian (x, y) location of the transmitter relative to the receiver can be directly determined.

    DIRECTION FINDING ANTENNA
    10.
    发明公开
    DIRECTION FINDING ANTENNA 审中-公开

    公开(公告)号：US20240036144A1

    公开(公告)日：2024-02-01

    申请号：US18096152

    申请日：2023-01-12

    申请人： ACCTON TECHNOLOGY CORPORATION

    发明人： I-RU LIU ,  CHUN-YI KUO

    IPC分类号： G01S3/04 ,  G01S3/12 ,  H01Q19/10

    CPC分类号： G01S3/043 ,  G01S3/12 ,  H01Q19/10

    摘要： A direction finding antenna includes a substrate, a reflecting ring, and a plurality of radiating elements, wherein the substrate has a surface. The reflecting ring is disposed on the surface of the substrate and is formed by connecting a plurality of side wires and is a closed polygon. Each of the side wires forms a reflector. The radiating elements are disposed on the surface of the substrate and are respectively located on an outside of the side wires, and each of the radiating elements corresponds to one of the side wires. Each of the side wires and each of the corresponding radiating elements form an antenna structure, and the antenna structures face different directions, thereby providing the needed accuracy of direction finding in different directions.