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1.发明授权公开(公告)号：US12117533B1
公开(公告)日：2024-10-15
申请号：US18519096
申请日：2023-11-27
申请人： Zephr.xyz Inc.
发明人： Pramukta Rao , Sean Gorman , Scott Nelson , Kostas Stamatiou
CPC分类号： G01S19/071 , G01S19/41 , G01S19/44
摘要： Accuracy of Global Navigation Satellite System (GNSS) for GNSS devices is improved using a GNSS positioning system that leverages networked optimization for enhanced accuracy. GNSS measurements from multiple devices form the foundation for a massive pairwise optimization approach. This fuels a self-reinforcing cycle, wherein Real Time Kinematic (RTK) pairwise optimizations support Precise Point Positioning (PPP) analysis. Improved PPP calculations in turn refine RTK optimization, rapidly iterating towards convergence. The PPP-RTK feedback loop refines positions iteratively, culminating in more accurate user locations.
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公开(公告)号：US20240337759A1
公开(公告)日：2024-10-10
申请号：US18682083
申请日：2022-09-02
CPC分类号： G01S19/41 , G01S19/071
摘要： A terminal position is determined with differential Global Navigation Satellite System (DGNSS) using GNSS signals from a plurality of satellite vehicles and differential corrections generated by a reference station for the GNSS signals and broadcast via a DGNSS server. The use of the differential corrections for positioning is interrupted when the determined terminal position does not improve with use of the differential corrections. The differential corrections may be interrupted for a period of time so that the terminal no longer receives the broadcast of the differential corrections or so that the differential corrections are not used for position estimation in order to reduce power consumption and reduce processing operations. The DGNSS capabilities of the terminal, such as the supported GNSS constellations and/or frequency bands, may be used by the DGNSS server to select differential corrections to broadcast to the terminal.
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3.发明公开公开(公告)号：US20240201397A1
公开(公告)日：2024-06-20
申请号：US18066395
申请日：2022-12-15
申请人： Raytheon Company
发明人： Matt Keti , Jason Burke
摘要： A method includes obtaining an initial survey of multiple receivers located on a dynamic platform. The method also includes obtaining sensor readings from the multiple receivers. The method further includes validating, using a differential calculator, the initial survey by (i) selecting a reference receiver and a target receiver from among the multiple receivers and (ii) calculating, based on the sensor readings and baselines between the reference receiver and one or more remaining receivers, a platform attitude, platform thermal expansion state, and survey error values corresponding to the target receiver. The method also includes, starting from a validated survey, adding a new receiver to the initial survey by (i) determining a baseline between the reference receiver and the new receiver and (ii) associating the baseline to a coordinate frame of the initial survey.
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4.发明授权公开(公告)号：US11906640B2
公开(公告)日：2024-02-20
申请号：US18115963
申请日：2023-03-01
摘要： A method can include receiving a set of satellite signals, refining the set of satellite signals to generate a refined set of satellite signals, determining a satellite solution for each satellite associated with a satellite signal in the refined set of satellite signals, applying an a-priori correction to the satellite signals, determining a set of time differenced satellite signals between the satellite signals from a current epoch and a previous epoch; and determining the positioning solution of the rover using a fusion engine that processes the differenced satellite signals and inertial measurement unit (IMU) data.
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公开(公告)号：US20240012160A1
公开(公告)日：2024-01-11
申请号：US18245667
申请日：2021-09-20
申请人： Robert Bosch GmbH
发明人： Kosmas Knoedler , Marco Limberger , Zhibo Wen , Thomas Speth
摘要： A method for determining navigation data by way of a GNSS localization device is disclosed. The method includes a) obtaining GNSS satellite signals from GNSS satellites; b) receiving at least two alternative GNSS correction data from at least two different correction data sources c) analyzing the alternative GNSS correction data and determining the validated correction data; and d) determining navigation data from received GNSS satellite signals and validated correction data.
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公开(公告)号：US20230417925A1
公开(公告)日：2023-12-28
申请号：US18330721
申请日：2023-08-29
CPC分类号： G01S19/072 , G01S19/41 , G01S19/24 , G01S19/14
摘要： The present disclosure presents systems method for remote sensing of the ionosphere. One such method comprises providing a single-board computer communicatively connected to a global navigation satellite systems (GNSS) receiver which is preconfigured to determine global positioning system coordinates by communicating with a set of GNSS satellites, reconfiguring the function of the single-board computer and GNSS receiver to acquire a set of GNSS signal parameters; and determining the set of physical properties of an ionosphere from the set of GNSS signal parameters. Other methods and systems are also provided.
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公开(公告)号：US11805492B2
公开(公告)日：2023-10-31
申请号：US17655883
申请日：2022-03-22
发明人： Liangping Ma , Xiao Feng Wang , Peter Gaal , Changhwan Park , Jun Ma , Bharat Shrestha , Ayan Sengupta , Alberto Rico Alvarino , Umesh Phuyal , Huilin Xu , Harikumar Krishnamurthy
CPC分类号： H04W56/006 , G01S19/41 , H04W84/06
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a differential UE-specific timing advance (TA) based at least in part on a difference between a first UE-specific TA associated with a current global navigation satellite system (GNSS) position fix and a second UE-specific TA associated with a previous GNSS position fix. The UE may transmit, to a non-terrestrial network (NTN) node, an uplink message at a time that is based at least in part on the differential UE-specific TA. Numerous other aspects are described.
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公开(公告)号：US11782167B2
公开(公告)日：2023-10-10
申请号：US17087629
申请日：2020-11-03
申请人： 2KR Systems, LLC
IPC分类号： G01S19/24 , G01S19/43 , G01S19/33 , G01S19/02 , G01S19/41 , G01M5/00 , G01S19/14 , G01S19/51
CPC分类号： G01S19/243 , G01M5/0041 , G01S19/02 , G01S19/14 , G01S19/33 , G01S19/41 , G01S19/43 , G01S19/51
摘要： A system network and methods supported by a constellation of GNSS satellites orbiting around the Earth, and deployed for precise remote monitoring of the spatial displacement, distortion and/or deformation of stationary and/or mobile systems, including buildings, bridges, and roadways. The methods involve (i) embodying multiple GNSS rovers within the boundary of the stationary and/or mobile system being monitored by the GNSS system network, (ii) receiving GNSS signals transmitted from GNSS satellites orbiting the Earth, and (iii) determining the geo-location and time-stamp of each GNSS rover while the stationary and/or mobile system is being monitored for spatial displacement, distortion and/or deformation, using GNSS-based rover data processing methods practiced aboard the system, or remotely within the application and database servers of the data center of the GNSS system network. The GNSS rovers also include on-board instrumentation for sensing and measuring the depth of water ponding about the GNSS rovers.
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公开(公告)号：US11693123B2
公开(公告)日：2023-07-04
申请号：US16660553
申请日：2019-10-22
发明人： Ashley Cooper
摘要： The present disclosure describes a system for dynamically determining an accurate location of a light electric vehicle. For example, if a light electric vehicle is within a predetermined distance of a location for which an accurate location determination is needed or required, a light electric vehicle management system may update the determined location of the light electric vehicle with a location correction factor that is based, at least in part, on a reference location provided by a stationary reference point.
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公开(公告)号：US11668841B2
公开(公告)日：2023-06-06
申请号：US17195231
申请日：2021-03-08
申请人： Trimble Inc.
摘要： Methods and apparatus for processing of GNSS signals are presented. These include GNSS processing with obtaining GNSS data derived from signals received at a rover antenna, obtaining correction data, maintaining a time sequence of at least one rover position and at least one rover position difference with associated time tags, using the time sequence to determine at least one derived rover position by, starting from a position determined using corrections synchronous with rover data as an anchor position at a time tag, deriving a new anchor position for the time tag of the anchor position and at least one other estimated rover position at the time tag of the anchor position, and/or reporting the new anchor position and/or a new derived rover position.
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