公开(公告)号：EP2897001B1

公开(公告)日：2017-09-06

申请号：EP14198176.1

申请日：2014-12-16

申请人： The Boeing Company

发明人： Li, Rongsheng ,  Ghassemi, Kamran

IPC分类号： G04F5/14 ,  G01R23/00 ,  G01S19/37 ,  G04G7/00 ,  G01S19/02 ,  G01S19/20

CPC分类号： G01S19/20 ,  G01S19/02 ,  G01S19/235 ,  G01S19/40 ,  G01S19/42 ,  G04F5/14 ,  H03L7/087 ,  H03L7/0991 ,  H04L27/00

摘要： Methods and apparatus to monitor GPS/GNSS atomic clocks are disclosed. An example method includes establishing a measured difference between an atomic frequency standard (AFS) and a monitoring device. The method also includes modeling an estimated difference model between the AFS and the monitoring device, and computing a residual signal based on the measured difference and the estimated difference model. In addition, the method includes analyzing, by a first detector, the residual signal at multiple thresholds, each of the thresholds having a corresponding persistency defining the number of times a threshold is exceeded before one or more of a phase jump, a rate jump, or an acceleration error is indicated. Furthermore, the method includes analyzing, by a second detector, a parameter of the estimated difference model at multiple thresholds, each of the thresholds having a corresponding persistency defining the number of times a drift threshold is exceeded before a drift is indicated.

摘要翻译： 公开了监测GPS / GNSS原子钟的方法和设备。 一种示例方法包括建立原子频率标准（AFS）与监测设备之间的测量差异。 该方法还包括对AFS和监测装置之间的估计的差异模型建模，并且基于测量的差异和估计的差异模型来计算残差信号。 此外，该方法包括通过第一检测器在多个阈值处分析残差信号，每个阈值具有相应的持久性，该相应的持续性定义了在相位跳跃，速率跳跃等中的一个或多个之前超过阈值的次数。 或指示加速度错误。 此外，该方法包括通过第二检测器在多个阈值处分析估计的差异模型的参数，每个阈值具有对应的持续性，所述对应的持续性定义了在指示漂移之前超过漂移阈值的次数。

公开(公告)号：EP2897001A2

公开(公告)日：2015-07-22

申请号：EP14198176.1

申请日：2014-12-16

申请人： The Boeing Company

发明人： Li, Rongsheng ,  Ghassemi, Kamran

IPC分类号： G04F5/14 ,  G01R23/00

CPC分类号： G01S19/20 ,  G01S19/02 ,  G01S19/235 ,  G01S19/40 ,  G01S19/42 ,  G04F5/14 ,  H03L7/087 ,  H03L7/0991 ,  H04L27/00

摘要： Methods and apparatus to monitor GPS/GNSS atomic clocks are disclosed. An example method includes establishing a measured difference between an atomic frequency standard (AFS) and a monitoring device. The method also includes modeling an estimated difference model between the AFS and the monitoring device, and computing a residual signal based on the measured difference and the estimated difference model. In addition, the method includes analyzing, by a first detector, the residual signal at multiple thresholds, each of the thresholds having a corresponding persistency defining the number of times a threshold is exceeded before one or more of a phase jump, a rate jump, or an acceleration error is indicated. Furthermore, the method includes analyzing, by a second detector, a parameter of the estimated difference model at multiple thresholds, each of the thresholds having a corresponding persistency defining the number of times a drift threshold is exceeded before a drift is indicated.

公开(公告)号：EP2897001A3

公开(公告)日：2016-06-29

申请号：EP14198176.1

申请日：2014-12-16

申请人： The Boeing Company

发明人： Li, Rongsheng ,  Ghassemi, Kamran

IPC分类号： G04F5/14 ,  G01R23/00 ,  G01S19/37 ,  G04G7/00

CPC分类号： G01S19/20 ,  G01S19/02 ,  G01S19/235 ,  G01S19/40 ,  G01S19/42 ,  G04F5/14 ,  H03L7/087 ,  H03L7/0991 ,  H04L27/00

摘要： Methods and apparatus to monitor GPS/GNSS atomic clocks are disclosed. An example method includes establishing a measured difference between an atomic frequency standard (AFS) and a monitoring device. The method also includes modeling an estimated difference model between the AFS and the monitoring device, and computing a residual signal based on the measured difference and the estimated difference model. In addition, the method includes analyzing, by a first detector, the residual signal at multiple thresholds, each of the thresholds having a corresponding persistency defining the number of times a threshold is exceeded before one or more of a phase jump, a rate jump, or an acceleration error is indicated. Furthermore, the method includes analyzing, by a second detector, a parameter of the estimated difference model at multiple thresholds, each of the thresholds having a corresponding persistency defining the number of times a drift threshold is exceeded before a drift is indicated.

摘要翻译： 公开了监测GPS / GNSS原子钟的方法和装置。 示例性方法包括建立原子频率标准（AFS）和监视装置之间的测量差。 该方法还包括对AFS和监测装置之间的估计差分模型进行建模，以及基于测量的差异和估计的差分模型计算残差信号。 此外，该方法包括：通过第一检测器分析多个阈值的残差信号，每个阈值具有定义超过阈值的次数的相应持久性，其中，相位跳变，速率跳跃， 或者表示加速度误差。 此外，该方法包括通过第二检测器在多个阈值处分析所估计的差分模型的参数，每个阈值具有定义漂移阈值在指示漂移之前的次数的对应持续性。