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公开(公告)号：US20220404151A1
公开(公告)日：2022-12-22
申请号：US17897538
申请日：2022-08-29
摘要： In one embodiment, a method includes, by a magnetic-measurement device, collecting on ore more magnetic measurements in association with a position and trajectory of the magnetic-measurement device; determining a velocity of the magnetic-measurement device; generating localization information for the magnetic-measurement device based at least in part on the velocity of the magnetic-measurement device; recording the localization information associated with the magnetic measurements; and communicating the localization information and the magnetic measurements for incorporation into a geomagnetic map.
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公开(公告)号：US20240069123A1
公开(公告)日：2024-02-29
申请号：US17743353
申请日：2022-05-12
发明人： Alexandre TOUTOV , Pavlo BORSUK
CPC分类号： G01R33/0206 , G01R33/10 , G05D1/0259
摘要： In one embodiment, an apparatus includes a first magnetometer that measures a magnetic induction and direction of a magnetic field. The first magnetometer has a first coordinate frame that includes a first x axis, a first y axis, and a first z axis. The apparatus includes a second magnetometer that measures the magnetic induction and direction of the magnetic field. The second magnetometer has a second coordinate frame that includes a second x axis, a second y axis, and a second z axis. Each of one or more of the second x axis, the second y axis, or the second z axis is has a predetermined orientation relative to the first x axis, the first y axis, or the first z axis.
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公开(公告)号：US20230384339A1
公开(公告)日：2023-11-30
申请号：US18230646
申请日：2023-08-06
发明人： Alexandre TOUTOV , Pavlo BORSUK
CPC分类号： G01P3/42 , G01B7/023 , B64C39/024
摘要： In one embodiment, an apparatus includes a first magnetometer that measures a magnetic field. The apparatus includes a second magnetometer that measures the magnetic field. The first magnetometer includes a first coordinate frame with a first x axis, a first y axis, and a first z axis. The second magnetometer includes a second coordinate frame with a second x axis, a second y axis, and a second z axis. Each of one or more of the second x axis, the second y axis, or the second z axis has a predetermined orientation relative to the first x axis, the first y axis, or the first z axis.
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公开(公告)号：US20230349698A1
公开(公告)日：2023-11-02
申请号：US18211366
申请日：2023-06-19
CPC分类号： G01C21/005 , G01C21/08 , G01C21/3807 , G01C21/3859 , G01S19/48
摘要： In one embodiment, a method includes accessing a geomagnetic map that incorporates one or more portions of one or more trajectories from one or more magnetic-measurement devices comprising magnetic measurements in an area collected by the magnetic-measurement devices over a period of time. The portions of the trajectories were incorporated into the magnetic map based on similarities in the trajectories determined at least in part by one or more correlation analyses performed on at least portions of the trajectories. The method also includes performing localization or navigation using the geomagnetic map.
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公开(公告)号：US20230003544A1
公开(公告)日：2023-01-05
申请号：US17838997
申请日：2022-06-13
摘要： In one embodiment, a method includes accessing a magnetic map of an area that includes magnetic-field values for locations in the area. The method also includes accessing an image file that includes pixels that correspond to the locations and include components. The image file also includes a first matrix with elements that each include color values. The components of the pixels include links to elements in the first matrix. The method also includes embedding portions of the magnetic map into the image file by generating a second matrix for the image file including elements that represent the magnetic-field values and, for the locations in the area, writing to the components of the pixels corresponding to the locations links to elements of the second matrix. The method also includes communicating the image file, with the portions of the magnetic map embedded in it, to computing devices for navigation or localization.
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公开(公告)号：US20220026235A1
公开(公告)日：2022-01-27
申请号：US17494483
申请日：2021-10-05
摘要： In one embodiment, a method includes collecting, by a magnetic navigation device, magnetic measurements of a particular geographical region in accordance with a position and trajectory of the magnetic navigation device; accessing a global navigation satellite system (GNSS) signal status and a network connection status on the magnetic navigation device; determining an operational mode for the magnetic navigation device based on the GNSS signal status and the network connection status; determining whether to transmit the magnetic measurements to a server or store the magnetic measurements locally on the magnetic navigation device based on the operational mode; and performing navigation or localization operations using the operational mode.
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公开(公告)号：US20210396524A1
公开(公告)日：2021-12-23
申请号：US17348561
申请日：2021-06-15
摘要： In one embodiment, a method includes at a mapping server receiving from a plurality of regional servers a plurality of regional magnetic data sets; at the mapping server updating a geomagnetic map with one or more of the regional magnetic data sets, wherein the geomagnetic map comprises one or more of the geographic regions; and from the mapping server communicating one or more portions of the geomagnetic map as updated to one or more of the regional servers for distribution as geomagnetic map information to one or more of the magnetic navigation devices for localization or navigation.
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公开(公告)号：US11725946B2
公开(公告)日：2023-08-15
申请号：US17494483
申请日：2021-10-05
CPC分类号： G01C21/1654 , G01C21/005 , G01C21/08 , G01C21/165 , G01C21/3807 , G01C21/3859 , G01C21/3874 , G01S19/49
摘要： In one embodiment, a method includes collecting, by a magnetic navigation device, magnetic measurements of a particular geographical region in accordance with a position and trajectory of the magnetic navigation device; accessing a global navigation satellite system (GNSS) signal status and a network connection status on the magnetic navigation device; determining an operational mode for the magnetic navigation device based on the GNSS signal status and the network connection status; determining whether to transmit the magnetic measurements to a server or store the magnetic measurements locally on the magnetic navigation device based on the operational mode; and performing navigation or localization operations using the operational mode.
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公开(公告)号：US11428532B2
公开(公告)日：2022-08-30
申请号：US17494431
申请日：2021-10-05
摘要： In one embodiment, a method includes at a mapping server receiving from a plurality of regional servers a plurality of regional magnetic data sets; at the mapping server updating a geomagnetic map with one or more of the regional magnetic data sets, wherein the geomagnetic map comprises one or more of the geographic regions; and from the mapping server communicating one or more portions of the geomagnetic map as updated to one or more of the regional servers for distribution as geomagnetic map information to one or more of the magnetic navigation devices for localization or navigation.
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公开(公告)号：US20220026212A1
公开(公告)日：2022-01-27
申请号：US17494454
申请日：2021-10-05
摘要： In one embodiment, a method includes receiving from multiple magnetic navigation devices magnetic measurements of one or more geographical regions collected over a period of time; performing a similarity correlation analysis on the magnetic measurements; generating one or more geomagnetic map patches corresponding to the one or more geographical regions based on the similarity correlation analysis; transmitting the one or more geomagnetic map patches to a main mapping server for updating geomagnetic map data; receiving updated geomagnetic map data from the main mapping server; and transmitting the updated geomagnetic map data to one or more of the magnetic navigation devices for navigation and localization.
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