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公开(公告)号：US20210223406A1
公开(公告)日：2021-07-22
申请号：US15734341
申请日：2018-11-20
发明人： Xucheng Mu
摘要： A precise point position and real-time kinematic (PPP-RTK) positioning method, including: when direct emission signals broadcast by a multi-system navigation satellite and a low-earth-orbit constellation are detected, determining raw observation data (S11); receiving navigation satellite augmentation information broadcast by the low-earth-orbit constellation, and a low-earth-orbit satellite precise orbit and precise clock difference (S12); using the navigation satellite augmentation information, the low-earth-orbit satellite precise orbit and precise clock difference and the raw observation data for precise point positioning (S13); or when comprehensive ground-based augmentation error correction information is received, using the navigation satellite augmentation information, the low-earth-orbit satellite precise orbit and precise clock difference, the raw observation data and the comprehensive ground-based augmentation error correction information for precise point positioning of ground-based augmentation (S13′). The present application further relates to a precise point position and real-time kinematic (PPP-RTK) positioning device, a computer-readable storage medium and a processor.
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公开(公告)号：US20210223405A1
公开(公告)日：2021-07-22
申请号：US15734446
申请日：2018-11-23
发明人： Xucheng Mu
摘要： The present application provides a fast and precise positioning method and system. The method includes: acquiring observation data of navigation satellites and LEO augmentation satellites at a current epoch; respectively acquiring navigation telegrams of the navigation satellites and the LEO augmentation satellites, and obtaining precise orbit and clock bias; correcting errors received in the positioning process according to the acquired navigation telegrams; normalizing by taking a type of satellite navigation system as reference to obtain unified linear observation equations, and calculating observation values of positioning and velocity measurement parameters; calculating estimated values of positioning and velocity measurement parameters at the current epoch through a state equation according to the calculated observation values of positioning and velocity measurement parameters and estimated values of positioning and velocity measurement parameters at the previous epoch; generating and saving positioning and velocity measurement results at the current epoch according to the estimated values of positioning and velocity measurement parameters.
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公开(公告)号：US11852735B2
公开(公告)日：2023-12-26
申请号：US15734726
申请日：2018-11-23
发明人： Xucheng Mu
CPC分类号： G01S19/51 , G01S19/073 , G01S19/11 , G01S19/256 , G01S19/55 , H04B7/18521
摘要： The present application provides a navigation augmentation method and system, the method includes: broadcasting, by satellites of a Low Earth Orbit (LEO) constellation, navigation direct signals and navigation augmentation information; performing, by a user receiver, precise positioning, speed measurement and timing according to the navigation direct signals of navigation satellites, the navigation direct signals of the LEO satellites and the navigation augmentation information broadcasted by the LEO satellites.
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公开(公告)号：US11733395B2
公开(公告)日：2023-08-22
申请号：US15734341
申请日：2018-11-20
发明人： Xucheng Mu
摘要： A precise point position and real-time kinematic (PPP-RTK) positioning method, including: when direct emission signals broadcast by a multi-system navigation satellite and a low-earth-orbit constellation are detected, determining raw observation data (S11); receiving navigation satellite augmentation information broadcast by the low-earth-orbit constellation, and a low-earth-orbit satellite precise orbit and precise clock difference (S12); using the navigation satellite augmentation information, the low-earth-orbit satellite precise orbit and precise clock difference and the raw observation data for precise point positioning (S13); or when comprehensive ground-based augmentation error correction information is received, using the navigation satellite augmentation information, the low-earth-orbit satellite precise orbit and precise clock difference, the raw observation data and the comprehensive ground-based augmentation error correction information for precise point positioning of ground-based augmentation (S13′). The present application further relates to a precise point position and real-time kinematic (PPP-RTK) positioning device, a computer-readable storage medium and a processor.
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公开(公告)号：US11726213B2
公开(公告)日：2023-08-15
申请号：US15734446
申请日：2018-11-23
发明人： Xucheng Mu
摘要： The present application provides a fast and precise positioning method and system. The method includes: acquiring observation data of navigation satellites and LEO augmentation satellites at a current epoch; respectively acquiring navigation telegrams of the navigation satellites and the LEO augmentation satellites, and obtaining precise orbit and clock bias; correcting errors received in the positioning process according to the acquired navigation telegrams; normalizing by taking a type of satellite navigation system as reference to obtain unified linear observation equations, and calculating observation values of positioning and velocity measurement parameters; calculating estimated values of positioning and velocity measurement parameters at the current epoch through a state equation according to the calculated observation values of positioning and velocity measurement parameters and estimated values of positioning and velocity measurement parameters at the previous epoch; generating and saving positioning and velocity measurement results at the current epoch according to the estimated values of positioning and velocity measurement parameters.
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公开(公告)号：US20210239855A1
公开(公告)日：2021-08-05
申请号：US15734726
申请日：2018-11-23
发明人： Xucheng Mu
摘要： The present application provides a navigation augmentation method and system, the method includes: broadcasting, by satellites of a Low Earth Orbit (LEO) constellation, navigation direct signals and navigation augmentation information; performing, by a user receiver, precise positioning, speed measurement and timing according to the navigation direct signals of navigation satellites, the navigation direct signals of the LEO satellites and the navigation augmentation information broadcasted by the LEO satellites.
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