公开(公告)号：US20140111377A1

公开(公告)日：2014-04-24

申请号：US13896999

申请日：2013-05-17

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Shankar V. Achanta ,  Gregary C. Zweigle ,  Christopher R. Huntley

IPC: G01S19/20

CPC classification number: G01S19/20 ,  G01S19/215

Abstract: Disclosed herein is a system for detecting manipulation of a global time source such as a Global Navigational Satellite System (GNSS) signal and mitigating against such manipulation. A plurality of receivers with geographical diversity receive GNSS signals, and calculate a time signal to be distributed to consuming devices. The receivers also communicate calculated time signals with other receivers. The receivers compare the time signals, and when a difference between the time signals exceeds a predetermined threshold, the receivers indicate that manipulation is likely. Such indication is shared across the network of receivers. The indication is further shared with consuming devices of the time signal from the compromised receiver. A second time signal that is not compromised may be shared with the consuming devices and/or used by the consuming devices. The consuming devices may modify their behavior when in receipt of the indication.

Abstract translation: 本文公开了一种用于检测诸如全球导航卫星系统（GNSS）信号的全球时间源的操纵的系统，并且可以减轻这种操纵。 具有地理分集的多个接收机接收GNSS信号，并计算要分配给消费设备的时间信号。 接收机还与其他接收机通信计算出的时间信号。 接收器对时间信号进行比较，当时间信号之间的差超过预定阈值时，接收器指示可能进行操作。 这种指示在接收机网络之间共享。 该指示进一步与来自受损接收机的时间信号的消费设备共享。 不损害的第二时间信号可以与消费设备共享和/或由消费设备使用。 消费设备可以在接收到指示时修改其行为。

公开(公告)号：US09400330B2

公开(公告)日：2016-07-26

申请号：US13896999

申请日：2013-05-17

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Shankar V. Achanta ,  Gregary C. Zweigle ,  Christopher R. Huntley

IPC: G01S19/20 ,  G01S19/21

CPC classification number: G01S19/20 ,  G01S19/215

Abstract: Disclosed herein is a system for detecting manipulation of a global time source such as a Global Navigational Satellite System (GNSS) signal and mitigating against such manipulation. A plurality of receivers with geographical diversity receive GNSS signals, and calculate a time signal to be distributed to consuming devices. The receivers also communicate calculated time signals with other receivers. The receivers compare the time signals, and when a difference between the time signals exceeds a predetermined threshold, the receivers indicate that manipulation is likely. Such indication is shared across the network of receivers. The indication is further shared with consuming devices of the time signal from the compromised receiver. A second time signal that is not compromised may be shared with the consuming devices and/or used by the consuming devices. The consuming devices may modify their behavior when in receipt of the indication.

Abstract translation: 本文公开了一种用于检测诸如全球导航卫星系统（GNSS）信号的全球时间源的操纵的系统，并且可以减轻这种操纵。 具有地理分集的多个接收机接收GNSS信号，并计算要分配给消费设备的时间信号。 接收机还与其他接收机通信计算出的时间信号。 接收器对时间信号进行比较，当时间信号之间的差超过预定阈值时，接收器指示可能进行操作。 这种指示在接收机网络之间共享。 该指示进一步与来自受损接收机的时间信号的消费设备共享。 不损害的第二时间信号可以与消费设备共享和/或由消费设备使用。 消费设备可以在接收到指示时修改其行为。