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

IPC: G01C21/08 ,  B64D43/00 ,  F41G7/00 ,  G01C21/20

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。

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

IPC: G01C21/18 ,  G01C21/08 ,  G01C21/20 ,  B64D43/00 ,  F41G7/00 ,  G01C21/16 ,  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.