Detecting spoofed global navigation satellite system (GNSS) signals

    公开(公告)号:US12189043B2

    公开(公告)日:2025-01-07

    申请号:US18534325

    申请日:2023-12-08

    Abstract: In an aspect, a user equipment (UE) receives a spoofing alert message from either a server or an internet-of-things (IOT) device that indicates whether a spoofed Global Navigation Satellite System (GNSS) condition is present. Based on determining that the spoofing alert message indicates that a spoofed GNSS condition is present, the UE determines, based on the spoofing alert message, a location of a spoofer broadcasting a spoofed GNSS signal, determines, based on the location of the spoofer and a current location of the UE, that the UE is within a receiving area of the spoofed GNSS signal, and determines a position of the UE without using the spoofed GNSS signal.

    Ultra wide-lane (UWL) real-time kinematic (RTK)

    公开(公告)号:US12130369B2

    公开(公告)日:2024-10-29

    申请号:US17313486

    申请日:2021-05-06

    CPC classification number: G01S19/44 G01S19/32

    Abstract: Techniques for Ultra Wide-Lane (UWL) Real-Time Kinematic (RTK) positioning a mobile device may include obtaining, using a multi-band GNSS receiver of the mobile device: a first carrier-phase measurement of a first GNSS signal on a first GNSS carrier frequency, and a second carrier-phase measurement of a second GNSS signal on second GNSS carrier frequency. Techniques may further comprise providing a position estimate of the mobile device, wherein: the position estimate is determined from a wide-lane (WL) combination of the first carrier-phase measurement and the second carrier-phase measurement, and the WL combination has a combined carrier phase noise that is less than a pseudo-range noise of the first carrier-phase measurement and a pseudo-range noise of the second carrier-phase measurement.

    Detecting spoofed global navigation satellite system (GNSS) signals

    公开(公告)号:US11892545B2

    公开(公告)日:2024-02-06

    申请号:US17238730

    申请日:2021-04-23

    CPC classification number: G01S19/215 G08B21/18

    Abstract: In an aspect, a user equipment (UE) receives a spoofing alert message from either a server or an internet-of-things (IOT) device that indicates whether a spoofed Global Navigation Satellite System (GNSS) condition is present. Based on determining that the spoofing alert message indicates that a spoofed GNSS condition is present, the UE determines, based on the spoofing alert message, a location of a spoofer broadcasting a spoofed GNSS signal, determines, based on the location of the spoofer and a current location of the UE, that the UE is within a receiving area of the spoofed GNSS signal, and determines a position of the UE without using the spoofed GNSS signal.

    Ionosphere grid history and compression for GNSS positioning

    公开(公告)号:US11686850B2

    公开(公告)日:2023-06-27

    申请号:US17377255

    申请日:2021-07-15

    CPC classification number: G01S19/072 G01S19/40

    Abstract: Described are methods, systems, and devices for correcting ionospheric error. In some aspects, a mobile device equipped with a Global Navigation Satellite System (GNSS) receiver is configured to determine a positioning measurement of a GNSS signal. The mobile device is further configured to receive augmentation data from an augmentation system. When augmentation data for a current measurement period is unavailable, the mobile device can obtain augmentation data associated with Total Electron Content (TEC) values (e.g., vertical TEC values) during one or more prior measurement periods. Based on the augmentation data associated with TEC values during one or more prior measurement periods and a pierce point of the received GNSS signal, an ionospheric error in the positioning measurement of the GNSS signal can be determined and corrected.

    Method and apparatus to determine relative location using GNSS carrier phase

    公开(公告)号:US11480691B2

    公开(公告)日:2022-10-25

    申请号:US16797381

    申请日:2020-02-21

    Abstract: Techniques are provided which may be implemented using various methods and/or apparatuses in a vehicle to determine location relative to a roadside unit (RSU) or other nearby point of reference. Vehicles within a pre-designated range or within broadcast distance or otherwise geographically proximate to a roadside unit, through the use of broadcast or other messages sent by the vehicles and/or the RSU may share carrier GNSS phase measurement data, wherein the shared GNSS carrier phase measurement data may be utilized to control and coordinate vehicle movements, velocity and/or position by the RSU and/or to determine location of each vehicle relative to the RSU and/or to other vehicles or determine the absolute location of each vehicle. An RSU may coordinate vehicle access to an intersection, manage vehicle speeds and coordinate or control vehicle actions such as slowing, stopping, and changing lanes or sending a vehicle to a particular location.

    Wireless device registration
    27.
    发明授权

    公开(公告)号:US11438859B2

    公开(公告)日:2022-09-06

    申请号:US17022187

    申请日:2020-09-16

    Abstract: A method of registering a target device includes: receiving a first indication to initiate a registration; and determining a suggested registration location and/or or a suggested registration name. The method further includes: providing a second indication of at least one of the suggested registration location or the suggested registration name; providing a third indication requesting at least one of whether the suggested registration location is accepted or whether the suggested registration name is accepted; receiving a fourth indication indicating at least one of whether the suggested registration location is accepted or whether the suggested registration name is accepted; and registering the target device by storing target device information based on the fourth indication.

    Adaptive pressure sensor sampling rate

    公开(公告)号:US10254188B2

    公开(公告)日:2019-04-09

    申请号:US15260624

    申请日:2016-09-09

    Abstract: Techniques provided herein are directed toward adjusting the rate at which a mobile device's barometric pressure sensor takes measurements, based on whether movement is detected from motion sensors, such as accelerometers, gyroscopes, and the like. Where movement is below a threshold (e.g., below a threshold speed or within a threshold distance), then the barometric pressure sensor can reduce the sampling rate to a rate that still enables the mobile device to account for changes in the weather. If movement is detected (e.g., greater than a threshold distance), then the sampling rate of the barometric pressure sensor increases (i.e., to a normal rate for determining vertical movement changes).

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