知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

276 条记录 (耗时 0.02 秒)

    Position validation
    1.
    发明授权
    Position validation 有权

    公开(公告)号：US12105214B2

    公开(公告)日：2024-10-01

    申请号：US16937890

    申请日：2020-07-24

    申请人： AIREON LLC

    发明人： Michael A. Garcia ,  John Dolan

    IPC分类号： G01S5/02 ,  G01S5/06 ,  G01S5/12 ,  G01S19/03 ,  G01S19/21 ,  H04K3/00

    CPC分类号： G01S5/0244 ,  G01S5/06 ,  G01S5/12 ,  H04K3/90 ,  G01S19/03 ,  G01S19/215

    摘要： In one implementation, a method includes receiving versions of a message from a first satellite-based receiver and a second satellite-based receiver that both received a radio frequency (“RF”) transmission of the message, the message comprising a self-reported position of a transmitter of the message. The method also includes determining a time difference between a first arrival time of the RF transmission of the message at the first satellite-based receiver and a second arrival time of the RF transmission of the message at the second satellite-based receiver. The method further includes determining a measure of the likelihood that the self-reported position of the transmitter is valid based on the time difference between the first and second arrival times. The method still further includes transmitting an indication of the measure of the likelihood that the self-reported position is valid.

    GNSS spoofing detection using peak suppression monitor
    4.
    发明授权
    GNSS spoofing detection using peak suppression monitor 有权

    公开(公告)号：US11874382B2

    公开(公告)日：2024-01-16

    申请号：US17174217

    申请日：2021-02-11

    申请人： MITRE Corporation

    发明人： Ali M. Odeh

    IPC分类号： G01S19/21 ,  G01S19/30 ,  H04K3/00 ,  G01S19/05 ,  G01S19/27

    CPC分类号： G01S19/215 ,  G01S19/30 ,  H04K3/90 ,  G01S19/05 ,  G01S19/27

    摘要： 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.

    Detecting and removing spoofing signals
    7.
    发明授权
    Detecting and removing spoofing signals 有权

    公开(公告)号：US09910160B2

    公开(公告)日：2018-03-06

    申请号：US14551646

    申请日：2014-11-24

    申请人： The Boeing Company

    发明人： William Preston Geren ,  Anthony Goodson

    IPC分类号： G01S19/21 ,  H04K3/00

    CPC分类号： G01S19/215 ,  H04K3/228 ,  H04K3/65 ,  H04K3/90 ,  H04K2203/32

    摘要： A method for detecting and removing spoofing signals may include receiving, by a navigation or communications device, a radio frequency (RF) signal and performing an anti-spoofing assessment to detect a presence of a spoofing signal associated with the RF signal. The method may additionally include generating a replica of the spoofing signal in response to the spoofing signal being detected and subtracting the replica of the spoofing signal from the RF signal to provide a residual non-spoofed signal. The method may further include decoding the residual non-spoofed signal by the navigation or communications device.

    Systems and methods for vehicle tracking
    9.
    发明授权
    Systems and methods for vehicle tracking 有权

    公开(公告)号：US09831980B2

    公开(公告)日：2017-11-28

    申请号：US15117294

    申请日：2015-02-04

    申请人： ERM ELECTRONIC SYSTEMS LTD.

    发明人： Meir Hayman

    IPC分类号： H04M11/04 ,  H04K3/00 ,  B60R25/102 ,  H04W4/04 ,  H04W74/08 ,  H04W84/04 ,  H04W88/08

    CPC分类号： H04K3/222 ,  B60R25/1025 ,  H04K3/226 ,  H04K3/825 ,  H04K3/88 ,  H04K3/90 ,  H04K2203/22 ,  H04W4/046 ,  H04W74/0833 ,  H04W84/042 ,  H04W88/08

    摘要： The invention concerns a vehicle tracking network including a plurality of subscriber vehicles and a control-center; and systems and methods for tracking vehicles, which are subscribers to such vehicle tracking network. In certain implementations, the method for tracking a subscriber vehicle includes the following operations carried out at the subscriber vehicle: monitoring operation of one or more services related to at least one of a wireless network communication service and positioning service associated with the subscriber vehicle; upon detecting a failure in at least one of said services, generating a corresponding distress signal encoded to be identifiable by other subscriber vehicle(s) of the vehicle tracking network; and broadcasting the encoded distress signal such that it is detectable by one or more of the other subscriber vehicles of the vehicle tracking network, which are located in the vicinity of the subscriber vehicle broadcasting the distress signal. Another subscriber vehicle(s), which receive the distress signal, may thereby initiate automatic notification of the condition of the vehicle broadcasting the distress signal to the control center.