DEVICES AND TECHNIQUES FOR IMPROVING RECEPTION OR COMPENSATING FOR ATTENUATION OF GNSS SIGNALS DURING WATER IMMERSION ACTIVITIES

    公开(公告)号:US20240012154A1

    公开(公告)日:2024-01-11

    申请号:US18471281

    申请日:2023-09-20

    CPC classification number: G01S19/19

    Abstract: A wearable device that can receive a plurality of Global Navigation Satellite System (GNSS) timing signals using an antenna, where the antenna is located in an exterior portion of the wearable device such that the antenna receives GNSS signals at the external portion of the wearable device, without the GNSS signals first passing through an air gap within a housing of the wearable device. The wearable device is configured to determine a geographic location of the wearable device based at least in part on the GNSS signals. The wearable device is configurable to perform underwater dead-reckoning procedures, measuring energy levels during dwell periods, measuring efficiency of swim strokes, sharing wearable device information with other electronic devices, calibrating the wearable device, or a combination thereof.

    GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) RECEIVER OPERATION DURING SPOOFING

    公开(公告)号:US20220035044A1

    公开(公告)日:2022-02-03

    申请号:US17389028

    申请日:2021-07-29

    Abstract: In conditions in which Global Navigation Satellite System (GNSS) signal spoofing is likely occurring, a GNSS receiver may be operated in a reduced operational state with respect to one or more GNSS bands that are likely being spoofed. According to embodiments, a reduced operational state with regard to a GNSS band may comprise performing one or more of the following functions with respect to that GNSS band: disabling data demodulation and decoding, disabling time setting (e.g., time of week (TOW), week number, etc.) disabling acquisition of unknown/not visible satellites, disabling satellite differences, disabling error recovery, reducing non-coherent integration time, and duty cycling the power for one or more receiver blocks associated with the GNSS band.

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