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    GEOLOCATION WITH RADIO-FREQUENCY RANGING
    1.
    发明申请
    GEOLOCATION WITH RADIO-FREQUENCY RANGING 审中-公开

    公开(公告)号：US20170234965A1

    公开(公告)日：2017-08-17

    申请号：US15584475

    申请日：2017-05-02

    Applicant: ENSCO, Inc.

    Inventor： DAVID W. A. TAYLOR, JR. ,  Bradley David Farnsworth ,  William Todd Faulkner

    IPC: G01S5/14 ,  G01S5/02 ,  G01S5/10 ,  G01S11/02

    CPC classification number: G01S5/14 ,  G01S5/0226 ,  G01S5/0289 ,  G01S5/10 ,  G01S11/02

    Abstract: A geolocation system includes an originator device configured to transmit a first wireless signal to a transponder device. The transponder device is configured to transmit a second wireless signal to the originator device. The system includes at least one observer device configured to receive the first wireless signal from the originator device and receive the second wireless signal from the transponder device. The system also includes a first processor configured to calculate a transactional difference range at the at least one observer device based on the first wireless signal received at the observer device and the second wireless signal received at the observer device. A corrected transactional difference range value may be calculated by subtracting a time-of-flight of the first wireless signal from the originator device to the transponder device from the transactional difference range. A method of performing geolocation using a transactional difference range is also disclosed.

    Virtual phased-array for coherent, distributed, and dynamic applications
    3.
    发明授权
    Virtual phased-array for coherent, distributed, and dynamic applications 有权

    公开(公告)号：US11777207B2

    公开(公告)日：2023-10-03

    申请号：US16924691

    申请日：2020-07-09

    Applicant: ENSCO, Inc.

    Inventor： Daniel Thomas Goff ,  William Todd Faulkner ,  Michael Lee Picciolo

    IPC: H01Q3/26 ,  H01Q3/34 ,  H01Q1/24 ,  H04B3/52

    CPC classification number: H01Q3/267 ,  H01Q1/246 ,  H01Q3/2605 ,  H01Q3/34 ,  H04B3/52

    Abstract: A virtual phased-array and associated methods are disclosed for coherent transmission and/or reception of radio signals among antenna elements of the array, where the antenna elements are wirelessly interconnected and one or more of the elements may be moving. In one embodiment, clocks of the antenna elements are synchronized based on a first set of measurements of wireless signal(s) transmitted by one or more of the antenna elements. Relative positions and orientations of the antenna elements are determined based on a second set of measurements of wireless signal(s) transmitted after the synchronizing of the clocks. Weight(s) of a manifold vector are determined based on the relative positions and orientations, to calibrate the manifold vector. A plurality of coherent wireless signals are transmitted via two or more of the antenna elements based on the calibrated manifold vector.

    Position and orientation tracking system, apparatus and method
    4.
    发明授权
    Position and orientation tracking system, apparatus and method 有权

    公开(公告)号：US11656316B2

    公开(公告)日：2023-05-23

    申请号：US17057602

    申请日：2018-06-28

    Applicant: ENSCO, Inc.

    Inventor： Daniel Thomas Goff ,  Robert Barlow Alwood ,  William Todd Faulkner ,  William Petersen Lounsbury

    IPC: G01S5/10 ,  G01S5/02 ,  G01S19/51 ,  G01S19/54 ,  G06F3/01

    CPC classification number: G01S5/0247 ,  G01S5/0264 ,  G01S5/0284 ,  G01S5/0289 ,  G01S5/10 ,  G01S19/51 ,  G01S19/54 ,  G06F3/011

    Abstract: A position and orientation determining system includes a first radio frequency (RF) device including at least one antenna configured to receive and transmit RF signals, a first radio unit in communication with the at least one antenna, and an inertial measurement unit (IMU). The system further includes a second RF device includes a constellation of antennae including at least three receiving antennae, a second radio unit in communication with the constellation of antennae, and a processor configured to determine a three-dimensional position and three-axis angular orientation of the first RF device relative to the second RF device based on computing at least two of three angles in the second RF device coordinate frame (XY, XZ and YZ) computed from carrier phase difference (CPD) measurements taken between each pair of the at least three receiving antennae when receiving a single RF signal transmitted from the at least one antenna of the first RF device, and estimating a direction of a gravity vector generated by the IMU.

    Geolocation with radio-frequency ranging
    6.
    发明授权
    Geolocation with radio-frequency ranging 有权

    公开(公告)号：US10094908B2

    公开(公告)日：2018-10-09

    申请号：US15584475

    申请日：2017-05-02

    Applicant: ENSCO, Inc.

    Inventor： David W. A. Taylor, Jr. ,  Bradley David Farnsworth ,  William Todd Faulkner

    IPC: G08B1/08 ,  G01S5/14 ,  G01S5/10 ,  G01S5/02 ,  G01S11/02

    Abstract: A geolocation system includes an originator device configured to transmit a first wireless signal to a transponder device. The transponder device is configured to transmit a second wireless signal to the originator device. The system includes at least one observer device configured to receive the first wireless signal from the originator device and receive the second wireless signal from the transponder device. The system also includes a first processor configured to calculate a transactional difference range at the at least one observer device based on the first wireless signal received at the observer device and the second wireless signal received at the observer device. A corrected transactional difference range value may be calculated by subtracting a time-of-flight of the first wireless signal from the originator device to the transponder device from the transactional difference range. A method of performing geolocation using a transactional difference range is also disclosed.

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