Identifying spoofed maritime signals based on receiving reception stations

    公开(公告)号:US12130367B2

    公开(公告)日:2024-10-29

    申请号:US17534072

    申请日:2021-11-23

    Applicant: Windward LTD.

    CPC classification number: G01S19/215 H04W4/029 H04W12/12 H04W4/40

    Abstract: A method, system and product for identifying spoofed maritime signals based on receiving reception stations. The method comprises obtaining one or more location-reporting signals of a maritime vessel, wherein the one or more location-reporting signals comprise one or more respective sets of geographical coordinates, each of which having a timestamp. The method further comprises determining that the one or more location-reporting signals are at least partially fabricated. The determination comprises: identifying a station that received the one or more location-reporting signals, wherein the station having a reception polygon; and determining that at least one set of geographical coordinates indicated by the one or more location-reporting signals is fabricated based on the reception polygon of the station. The method further comprises performing a responsive action.

    GNSS Spoofing Detection Using Peak Suppression Monitor

    公开(公告)号:US20240345260A1

    公开(公告)日:2024-10-17

    申请号:US18411924

    申请日:2024-01-12

    Inventor: Ali M. Odeh

    CPC classification number: G01S19/215 G01S19/30 H04K3/90 G01S19/05 G01S19/27

    Abstract: A peak suppression monitor is coupled to a tracking channel. The peak suppression monitor facilitates receiving, from the tracking channel over a time period, real-time correlation data derived from a global navigation satellite system signal. The real-time correlation data having one or more peaks. Predicted correlation data corresponding to the real-time correlation data is determined based on historical correlation data. A presence of spoofing within the real-time correlation data is identified based on one or more peaks of residual correlation data. The residual correlation data including a comparison between the real-time correlation data and the predicted correlation data. Spoofing detecting data is generated based on the presence of spoofing and the residual correlation data. The generated spoofing detecting data to the tracking channel is provided for further mitigation or a notification identifying the presence of spoofing is provided to a user.

    System for accurate geospatial location and time transfer using radio transmissions without satellite signals

    公开(公告)号:US12072410B2

    公开(公告)日:2024-08-27

    申请号:US17511126

    申请日:2021-10-26

    Abstract: A system for accurate geospatial location and time transfer using radio transmissions without satellite signals. A position and timing measurement system uses standard uncorrelated radio broadcast signals, each of which transmits on an assigned frequency from a known position defined in latitude and longitude, and each of which transmits a modulated or unmodulated carrier signal. A reference unit at known fixed position receives the said standard broadcast signals in the vicinity, samples the frequencies and content values of their signals and broadcasts the said measured frequency and content data nearly simultaneously with a time mark representing the time of said measurement and further broadcasts its position in latitude and longitude. A mobile unit at an unknown position to be determined receives the said standard broadcast signals in the vicinity and measures the time of arrival of their broadcast, recording the time of said measurement.

    DETECTING SPOOFED GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) SIGNALS

    公开(公告)号:US20240111061A1

    公开(公告)日:2024-04-04

    申请号:US18534354

    申请日:2023-12-08

    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.

    SYSTEM AND METHOD FOR GNSS CORRECTION TRANSMISSION

    公开(公告)号:US20240085566A1

    公开(公告)日:2024-03-14

    申请号:US18244567

    申请日:2023-09-11

    CPC classification number: G01S19/07 G01S19/215

    Abstract: A method can include and/or a system can be configured for determining satellite positioning corrections, generating a satellite positioning corrections message to transmit the satellite positioning corrections to an endpoint. The method can optionally include and/or the system can optionally be configured for establishing or determining a chain-of-trust, validating the satellite positioning corrections (e.g., at the endpoint), and/or determining a positioning solution.

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