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公开(公告)号：US10338261B2
公开(公告)日：2019-07-02
申请号：US14856356
申请日：2015-09-16
Applicant: Raytheon Company
Inventor： Matthew E. Gann , Benjamin Dolgin , James C. Zellner , Ender E. Barillas
IPC: G01V3/16 , G01D18/00 , G01R33/022 , G01R33/00 , G01V3/165
Abstract: Technology for performing magnetic field gradient measurements is described. The magnetic field gradient measurements for specific positions on the Earth can be performed from a moving platform. The magnetic field gradient measurements can be identified as being affected by a level of error that exceeds a defined threshold. A correction value can be generated to compensate for the error in the magnetic field gradient measurements. The correction value can be applied to the magnetic field gradient measurements in order to obtain magnetic field gradient measurements with a reduced level of error.
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公开(公告)号：US10378900B2
公开(公告)日：2019-08-13
申请号：US14856323
申请日：2015-09-16
Applicant: Raytheon Company
Inventor： Matthew E. Gann , Garabed P. Hagopian , James C. Zellner , Benjamin Dolgin , Ender E. Barillas
Abstract: Technology for determining a geographical location is described. A sequence of magnetic field gradient measurements can be identified for specific positions on the Earth that correspond to a path traveled by a moving platform. The sequence of magnetic field gradient measurements for the path can be compared to a reference magnetic field gradient map. A trajectory derived from the reference magnetic field gradient map that correlates to the sequence of magnetic field gradient measurements can be identified. The trajectory can have known geographical coordinates. The geographical location of the moving platform can be determined based on the known geographical coordinates of the trajectory.
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公开(公告)号：US20170075020A1
公开(公告)日：2017-03-16
申请号：US14856356
申请日：2015-09-16
Applicant: Raytheon Company
Inventor： Matthew E. Gann , Benjamin Dolgin , James C. Zellner , Ender E. Barillas
CPC classification number: G01V3/16 , G01C21/08 , G01C25/005 , G01D18/004 , G01R33/0029 , G01R33/022 , G01V3/165
Abstract: Technology for performing magnetic field gradient measurements is described. The magnetic field gradient measurements for specific positions on the Earth can be performed from a moving platform. The magnetic field gradient measurements can be identified as being affected by a level of error that exceeds a defined threshold. A correction value can be generated to compensate for the error in the magnetic field gradient measurements. The correction value can be applied to the magnetic field gradient measurements in order to obtain magnetic field gradient measurements with a reduced level of error.
Abstract translation: 描述用于执行磁场梯度测量的技术。 地球上特定位置的磁场梯度测量可以从移动平台进行。 磁场梯度测量可以被识别为受超过定义阈值的误差水平的影响。 可以产生校正值以补偿磁场梯度测量中的误差。 可以将校正值应用于磁场梯度测量，以便以降低的误差水平获得磁场梯度测量。
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公开(公告)号：US20170074660A1
公开(公告)日：2017-03-16
申请号：US14856323
申请日：2015-09-16
Applicant: Raytheon Company
Inventor： Matthew E. Gann , Garabed P. Hagopian , James C. Zellner , Benjamin Dolgin , Ender E. Barillas
CPC classification number: G01C21/08 , B64D43/00 , F41G7/008 , G01C21/165 , G01C21/18 , G01C21/20 , G01R33/022 , G01S19/48
Abstract: Technology for determining a geographical location is described. A sequence of magnetic field gradient measurements can be identified for specific positions on the Earth that correspond to a path traveled by a moving platform. The sequence of magnetic field gradient measurements for the path can be compared to a reference magnetic field gradient map. A trajectory derived from the reference magnetic field gradient map that correlates to the sequence of magnetic field gradient measurements can be identified. The trajectory can have known geographical coordinates. The geographical location of the moving platform can be determined based on the known geographical coordinates of the trajectory.
Abstract translation: 描述了确定地理位置的技术。 可以对地球上与移动平台行进的路径相对应的特定位置识别一系列磁场梯度测量。 可以将路径的磁场梯度测量序列与参考磁场梯度图进行比较。 可以确定从与磁场梯度测量序列相关的参考磁场梯度图导出的轨迹。 轨迹可以具有已知的地理坐标。 移动平台的地理位置可以基于已知的轨迹地理坐标来确定。
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