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1. 发明授权

US11879985B2 Method and system for calculating center GPS coordinates using spherical coordinates 有权
公开(公告)号：US11879985B2
公开(公告)日：2024-01-23
申请号：US18314066
申请日：2023-05-08
申请人： Dane R Thompson
发明人： Dane R Thompson
IPC分类号： G01S19/50 , A01G25/09
CPC分类号： G01S19/50 , A01G25/092
摘要： A method and system for determining center coordinates of a circular arc uses a position sensor, such as a GPS receiver, for receiving position coordinates for a plurality of points along the circular arc. The position coordinates for the plurality of points are then processed using an algorithm developed based on the geometric relationship for a cone inscribed in a sphere, with the sphere representing the Earth, the position coordinates defining points along a base perimeter of the cone, and an apex of the cone being located at the center of the Earth. A regression model is used to determine the center coordinates of the circular arc in a three-dimensional coordinate system without converting the position coordinates into two-dimensional coordinates. The method and system can be used to determine center coordinates for a center pivot sprinkler monitoring system or a vehicle guidance system.

2. 发明授权

US11686857B2 Geographical feature/artificial structures detection and application for GNSS navigation with map information 有权
公开(公告)号：US11686857B2
公开(公告)日：2023-06-27
申请号：US17826349
申请日：2022-05-27
申请人： Samsung Electronics Co., Ltd.
发明人： Debo Sun , Qi Li
IPC分类号： G01S19/40 , G01S19/48 , G01S19/50 , G01S19/39
CPC分类号： G01S19/40 , G01S19/393 , G01S19/48 , G01S19/50
摘要： A method of navigating with a global navigation satellite system (GNSS) includes receiving a GNSS signal, calculating a GNSS navigation solution according to the GNSS identifying map information corresponding to the GNSS navigation solution, detecting features from the identified map information, and correcting a GNSS navigation based on the features detected from the map information and the GNSS signal.

3. 发明授权

US11487025B1 Method for inferring GPS location 有权
公开(公告)号：US11487025B1
公开(公告)日：2022-11-01
申请号：US16831903
申请日：2020-03-27
申请人： UIPCO, LLC
发明人： Gregory Brian Meyer , Mark Anthony Lopez , Ravi Durairaj , Nolan Serrao , Victor Kwak , Ryan Thomas Russell , Christopher Russell , Ruthie D. Lyle
IPC分类号： G01S19/50 , G01S19/45 , G01S19/47 , G01S19/37
摘要： A method of inferring the GPS location of a device with a GPS receiver is disclosed. The method includes using signals from two GPS satellites to determine two candidate GPS locations. Geographic information can be used to estimate the probability that the device is at each location. If one of the two candidate GPS locations has a substantially higher probability of being the correct location, that location may be selected as the inferred GPS location. The method may also include making use of additional sensed data that could be provided using sensors onboard the device.

4. 发明申请

US20220326395A1 DEVICE AND METHOD FOR AUTONOMOUSLY LOCATING A MOBILE VEHICLE ON A RAILWAY TRACK 有权
公开(公告)号：US20220326395A1
公开(公告)日：2022-10-13
申请号：US17642694
申请日：2019-09-12
申请人： THALES
发明人： Philippe LAVIRON , Cédrik FERRERO , Yuxiang SONG , Jennifer SIMEON
IPC分类号： G01S19/50 , G01S19/13
摘要： The embodiments of the invention provide a method for locating, in a railroad frame of reference, a mobile vehicle traveling on railroad tracks of a railroad network. The method determines one or more railroad track segments on which the mobile vehicle is likely to be located by querying a cartographic database based on at least one location parameter. The cartographic database comprises data representing a vectorial description of at least one railroad track of the railroad network and data representing a description of one or more objects of the environment adjacent to the railroad tracks of the railroad network likely to interfere with the navigation signals received by the mobile vehicle. The method includes a step of generating the cartographic database comprising the steps of: receiving a measurement point cloud classified and geolocated in a coordinate system, the measurement point cloud being associated with the railroad network and with the adjacent environment, determining the topology of the railroad network based on geolocated and classified measurement points associated with the railroad network and a plurality of additional elements of the railroad network, modeling the geometry of the railroad tracks of the railroad network as a plurality of modeled railroad track segments, determining, from geolocated and classified measurement points associated with the adjacent environment, one or more adjacent objects, each of the adjacent objects being associated with one or more modeled railroad track segments, identifying, for each association between an adjacent object and one or more modeled railroad track segments, information representing the interference affecting the navigation signals.

5. 发明授权

US11415708B2 Multipath management for global navigation satellite systems 有权
公开(公告)号：US11415708B2
公开(公告)日：2022-08-16
申请号：US16957716
申请日：2018-12-21
申请人： CENTRE NATIONAL D'ETUDES SPATIALES
发明人： Cédric Rouch , Denis Laurichesse , François-Xavier Marmet
IPC分类号： G01S19/41 , G01S19/07 , G01S19/22 , G01S19/50
摘要： A positioning device includes a first GNSS receiver; a communication link configured to receive a spatial position, code measurements and carrier phase measurements of a second GNSS receiver; an input interface to a processing logic, the processing logic being configured to: calculate a position of the first positioning device from communicated data; and to estimate one or more parameters representative of multipath at the position of the first positioning device; wherein the communication link is configured to communicate to a second positioning device the parameters representative of multipath at the position of the first positioning device. Described developments comprise the use of multipath severity indicators, the determination of relative distances between receivers, validity conditions in time and/or space of multipath, various embodiments in a train or in a group of vehicles. Software aspects are discussed.

6. 发明授权

US11353596B2 Position and motion informed navigation system 有权
公开(公告)号：US11353596B2
公开(公告)日：2022-06-07
申请号：US16414666
申请日：2019-05-16
申请人： Raytheon Company
发明人： Ian S. Robinson , Andrew M. Hautzik , Brandon Crow
IPC分类号： G01S19/42 , G01S19/21 , G01S19/46 , G01S19/50
摘要： A global positioning system (GPS) receiver and system for determining a geographical location associated with the GPS receiver using less than four GPS signals. The system can comprise a constraint module configured to receive one or more constraints that describe at least one characteristic of a GPS receiver when a number of GPS satellites within a line of sight to the GPS receiver is below a defined value. The system can further comprise a pseudo range calculation module configured to calculate a plurality of pseudo ranges between the GPS receiver and the number GPS satellites, wherein the plurality of pseudo ranges are to various orbital positions of the GPS satellites over a period of time; and a geographical location module configured to determine the geographical location of the GPS receiver using the plurality of pseudo ranges and known constraints of motion associated with the GPS receiver.

7. 发明申请

US20220135096A1 METHOD AND SYSTEM FOR DETERMINING THE POINT LOCATION OF A STOPPED VEHICLE ON A STORAGE TRACK, USING VIRTUAL BEACONS 有权
公开(公告)号：US20220135096A1
公开(公告)日：2022-05-05
申请号：US16770581
申请日：2019-06-13
申请人： THALES
发明人： Marc REVOL
IPC分类号： B61L25/02 , G01S19/50 , G01S19/25 , G01S19/40
摘要： A method for determining the point location of a vehicle stopped on one storage track among a set of storage tracks, using virtual beacons is provided. It determines and compares the likelihood of a plurality of hypotheses as to the stopped location of the vehicle, corresponding to a first set of NBe predefined virtual beacons Be(i), i varying from 1 to NBe, the respective positions of which are known in an amount of one virtual beacon per storage track, by correlating the GNSS geo-positioning signals received at various synchronization reset times of a second set by the GNSS receiver located on board the vehicle with predicted GNSS geo-positioning signals of replicas expected for the various positions of the virtual beacons of the first set at the various times. The detected holding position of the vehicle is the position that corresponds to the maximum likelihood.

8. 发明申请

US20220091280A1 MULTI-LEVEL ALTITUDE MAP MATCHING 有权
公开(公告)号：US20220091280A1
公开(公告)日：2022-03-24
申请号：US17477744
申请日：2021-09-17
申请人： HERE GLOBAL B.V.
发明人： Henri Jaakko Julius NURMINEN , Pavel IVANOV , Lauri Aarne Johannes WIROLA
IPC分类号： G01S19/50 , G01S19/40 , G01S19/39
摘要： A method is disclosed comprising: obtaining or gathering sample measurements, wherein one or more of the sample measurements are or comprise Global Navigation Satellite System, GNSS, available sample measurements, the one or more GNSS-available sample measurements respectively comprising information indicating that at least one GNSS signal is or was available at a respective location; matching, with a GNSS-availability altitude map, one or more of the GNSS-available sample measurements, wherein one or more of the respective locations are represented by the GNSS-availability altitude map; and based at least on the matching, determining or correcting altitude information respectively associated with one or more of the sample measurements. It is further disclosed an according apparatus, computer program and system.

9. 发明申请

US20220011445A1 GEOGRAPHICAL FEATURE/ARTIFICAL STRUCTURES DETECTION AND APPLICATION FOR GNSS NAVIGATION WITH MAP INFORMATION 有权
公开(公告)号：US20220011445A1
公开(公告)日：2022-01-13
申请号：US17014519
申请日：2020-09-08
申请人： Samsung Electronics Co., Ltd.
发明人： Debo Sun , Qi Li
IPC分类号： G01S19/40 , G01S19/39 , G01S19/50 , G01S19/48
摘要： A method of navigating with a global navigation satellite system (GNSS) includes receiving a GNSS signal, calculating a GNSS navigation solution according to the GNSS signal, identifying map information corresponding to the GNSS navigation solution, detecting features from the identified map information, and correcting a GNSS navigation based on the features detected from the map information and the GNSS signal.

10. 发明授权

US10739140B2 Iterative estimation of non-holonomic constraints in an inertial navigation system 有权
公开(公告)号：US10739140B2
公开(公告)日：2020-08-11
申请号：US15853510
申请日：2017-12-22
申请人： Apple Inc.
发明人： Changlin Ma , Isaac T. Miller
IPC分类号： G01C21/16 , B60G17/016 , B60R21/0132 , G01S19/31 , G01C21/28 , G01S19/39 , G01S19/50 , G01S19/46 , B60W50/00
摘要： A device implementing a system for estimating device location includes at least one processor configured to receive a first and second set of signals, each set corresponding to location data and being received based on a sampling interval. The at least one processor is configured to, for each sampling period defined by the sampling interval, obtain sensor data corresponding to device motion during the sampling period, determine an orientation of the device relative to that of the vehicle based on the sensor data, calculate a non-holonomic constraint based on the orientation of the device relative to that of the vehicle such that the non-holonomic constraint is iteratively updated, and estimate a device state based on the non-holonomic constraint.

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