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公开(公告)号：US12022278B2
公开(公告)日：2024-06-25
申请号：US18218245
申请日：2023-07-05
Applicant: Focal Point Positioning Limited
Abstract: A method and apparatus configured to create a zone of privacy within which tracking signals, transmitted by a tracking device located within the privacy zone, cannot be used to identify a location of the tracking device.
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Patent Agency Ranking
公开(公告)号：US20240230823A9
公开(公告)日：2024-07-11
申请号：US18381071
申请日：2023-10-17
Applicant: Focal Point Positioning Limited
CPC classification number: G01S5/021 , G01S5/10 , G01S2205/008
Abstract: A method, apparatus and system for determining a location of a receiver using cellular signals include determining a motion of a respective antenna of at least one receiver that received at least one cellular signal, using the determined antenna motion, performing motion compensated correlation on the received at least one cellular signal to generate at least one motion compensated correlation result, determining a direction of arrival for the received at least one cellular signal using the at least one motion compensated correlation result, and determining a location of the at least one receiver using the determined direction of arrival of the received at least one cellular signal and location information related to the at least one emitter from which the at least one cellular signal was received.
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3.发明公开公开(公告)号：US20240159912A1
公开(公告)日：2024-05-16
申请号：US18388703
申请日：2023-11-10
Applicant: Focal Point Positioning Limited
CPC classification number: G01S19/235 , G01S19/20 , H03L7/085
Abstract: A method, apparatus, and system for determining a frequency related parameter of a frequency source using predictive control includes receiving, at an antenna of the receiver, a plurality of signals from a plurality of remote source, generating motion compensated correlation results using a determined motion of the antenna of the receiver, the received plurality of signals, and a local signal derived from the local frequency source, using predictive control to predict the frequency related parameter of the local frequency source, phase compensating the motion compensated correlation results to produce phase compensated correlation results using a plurality of phasor sequences that are based on the predicted frequency related parameter of the local frequency source, and jointly analysing the phase compensated correlation results associated with the plurality of remote sources to determine a frequency offset of the local frequency source.
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公开(公告)号：US20240103118A1
公开(公告)日：2024-03-28
申请号：US18371915
申请日：2023-09-22
Applicant: Focal Point Positioning Limited
IPC: G01S5/02
CPC classification number: G01S5/0273
Abstract: A method for mapping a surface using signals transmitted from a single transmitter comprises: receiving signals transmitted from the single transmitter, where each signal has a different propagation path; determining a motion of an antenna of the receiver; generating phasor sequences, where each phasor sequence represents a hypothesis based on antenna motion and a direction of arrival estimate for each received signal; compensating the received signals, local signals, or correlation results from correlating the received signals with the local signals using the phasor sequences based on the hypotheses to generate compensated correlation results; determining a preferred hypothesis in the hypotheses for each received signal that optimizes each correlation result; identifying a direction of arrival for each received signal using the determined hypothesis; determining a point of reflection from the direction of arrival of each received signal; and combining the points of reflection into one or more reflective surfaces.
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公开(公告)号：US20230412245A1
公开(公告)日：2023-12-21
申请号：US18198591
申请日：2023-05-17
Applicant: Focal Point Positioning Limited
CPC classification number: H04B7/086 , H04B7/0617
Abstract: A method, apparatus and system for improving co-channel operation of simultaneously operating, independent radio signals. The method, apparatus and system receive at least two co-channel RF signals, perform motion compensated correlation upon at least one of the at least two co-channel RF signals, and determine the direction of arrival of the at least one of the at least two co-channel RF signals. In response to the direction of arrival determined for the at least one of the at least two co-channel RF signals, an action to perform to improve co-channel operation of the at least two co-channel RF signals at a subject receiver is determined.
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公开(公告)号：US20240133992A1
公开(公告)日：2024-04-25
申请号：US18381071
申请日：2023-10-16
Applicant: Focal Point Positioning Limited
CPC classification number: G01S5/021 , G01S5/10 , G01S2205/008
Abstract: A method, apparatus and system for determining a location of a receiver using cellular signals include determining a motion of a respective antenna of at least one receiver that received at least one cellular signal, using the determined antenna motion, performing motion compensated correlation on the received at least one cellular signal to generate at least one motion compensated correlation result, determining a direction of arrival for the received at least one cellular signal using the at least one motion compensated correlation result, and determining a location of the at least one receiver using the determined direction of arrival of the received at least one cellular signal and location information related to the at least one emitter from which the at least one cellular signal was received.
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