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公开(公告)号：US20240118404A1
公开(公告)日：2024-04-11
申请号：US18469949
申请日：2023-09-19
Applicant: NXP B.V.
CPC classification number: G01S13/42 , G01S7/352 , G01S13/006
Abstract: An apparatus configured to:
receive an input dataset indicative of radar signals, reflected from targets, received at an antenna;
determine an objective function for evaluation over a plurality of points of a search space representing possible direction-of-arrival angles;
evaluate the objective function for a first candidate number of targets;
perform a first evaluation of a branch metric function based on a second candidate number of targets, wherein the branch metric function is indicative of a change in the objective function; and
if the branch metric function is greater than a predetermined threshold, then evaluate the objective function for the second candidate number of targets;
if the branch metric function is less than the predetermined threshold, then evaluate the objective function for the first candidate number of targets, wherein the evaluation is based on at least one of the first candidate number of targets having a different, second candidate direction-of-arrival angle.-
公开(公告)号：US20230314562A1
公开(公告)日：2023-10-05
申请号：US17712445
申请日：2022-04-04
Applicant: NXP B.V.
IPC: G01S7/35 , G01S13/931
CPC classification number: G01S7/35 , G01S13/931
Abstract: Phase noise reduction is described for symmetric bistatic radar. In one example, a first beat signal is generated of a second signal received at a first antenna and a third beat signal is generated at a second antenna of a first linear antenna array. A second beat signal is generated of a first signal received at a first antenna of a second linear antenna array. The first beat signal and the third beat signal are multiplied with the complex conjugate of the second beat signal to generate products that are combined to generate a phase estimation correction term that is applied to first and second sets of radar return signals.
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公开(公告)号：US20230305104A1
公开(公告)日：2023-09-28
申请号：US18182763
申请日：2023-03-13
Applicant: NXP B.V.
Inventor： Andries Pieter Hekstra , Alessio Filippi , Arie Geert Cornelis Koppelaar , Ryan Haoyun Wu , Dongyin Ren , Feike Guus Jansen , Jeroen Overdevest , Joerg Heinrich Walter Wenzel
CPC classification number: G01S7/354 , G01S13/584 , G01S7/356
Abstract: A radar receiver comprising: an ADC (510) that samples analogue intermediate frequency, IF, signalling in order to generate digital signalling, wherein the digital signalling comprises a plurality of digital-values; a digital processor that populates a 2-dimensional array of bin-values based on the digital-values, such that: a first axis of the 2-dimensional array is a fast time axis and a second axis of the 2-dimensional array is a slow time axis; and a sampling-rate-adjuster that is configured to set a sampling rate associated with the bin-values in the 2-dimensional array based on an index of the slow time axis. The digital processor also performs DFT calculations on the bin-values in the 2-dimensional array along the fast time axis and the slow time axis in order to determine the range and velocity of any detected objects.
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公开(公告)号：US10404490B2
公开(公告)日：2019-09-03
申请号：US15898024
申请日：2018-02-15
Applicant: NXP B.V.
Inventor： Jan Dutz , Wolfgang Küchler , Frank Leong , Thomas Baier , Arie Geert Cornelis Koppelaar
Abstract: A processing module for a receiver device configured to provide for processing of a frame received by the receiver device from a transmitter device, the at least one frame comprising a plurality of repeating predetermined synchronization symbols for providing synchronization between the processing module and the transmitter device and one or more start-of-frame symbols defining the end of the synchronization symbols, the processing module configured to: perform cross correlation to obtain a cross-correlation function on i) at least a part of the received frame; with ii) a predetermined modulation sequence used to modulate the one or more start-of-frame symbols and not the synchronization symbols; and determine the location of the start-of-frame symbols based on an increase, above a threshold increase, in the cross-correlation function from a negative cross-correlation with the synchronization symbols to a greater cross-correlation with the part of the received frame containing the start-of-frame symbols.
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Patent Agency Ranking
公开(公告)号：US10291436B2
公开(公告)日：2019-05-14
申请号：US15897763
申请日：2018-02-15
Applicant: NXP B.V.
Inventor： Jan Dutz , Wolfgang Küchler , Frank Leong , Thomas Baier , Arie Geert Cornelis Koppelaar
IPC: H04L25/30 , H04L25/02 , H04B17/391 , H04B1/717 , H04B1/7183 , H04L7/04 , G01S13/76
Abstract: A processing module for a transmitter device configured to provide for generation of a signal comprising at least one frame for transmission by the transmitter device to a receiver device, the processing module configured to provide for processing of an input pulse stream comprising a stream of pulses representative of data, to provide an output pulse stream, each pulse of the pulse streams having one of two states defining the phase with which a carrier wave is modulated; the processing module configured to; divide the input pulse stream into consecutive groups of pulses; and for each group of pulses, based on determination that the first two or more consecutive pulses of the group have the same polarity, provide for addition of at least one dummy pulse to the group directly after the first two or more consecutive pulses, with an opposite polarity.
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公开(公告)号：US20180254925A1
公开(公告)日：2018-09-06
申请号：US15897763
申请日：2018-02-15
Applicant: NXP B.V.
Inventor： Jan Dutz , Wolfgang Küchler , Frank Leong , Thomas Baier , Arie Geert Cornelis Koppelaar
IPC: H04L25/02 , H04B17/391 , H04L7/04 , H04B1/7183 , H04B1/717
CPC classification number: H04L25/0212 , G01S13/762 , G01S13/765 , H04B1/7174 , H04B1/7183 , H04B17/391 , H04L7/042
Abstract: A processing module for a transmitter device configured to provide for generation of a signal comprising at least one frame for transmission by the transmitter device to a receiver device, the processing module configured to provide for processing of an input pulse stream comprising a stream of pulses representative of data, to provide an output pulse stream, each pulse of the pulse streams having one of two states defining the phase with which a carrier wave is modulated; the processing module configured to; divide the input pulse stream into consecutive groups of pulses; and for each group of pulses, based on determination that the first two or more consecutive pulses of the group have the same polarity, provide for addition of at least one dummy pulse to the group directly after the first two or more consecutive pulses, with an opposite polarity.
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公开(公告)号：US20180254923A1
公开(公告)日：2018-09-06
申请号：US15898024
申请日：2018-02-15
Applicant: NXP B.V.
Inventor： Jan Dutz , Wolfgang Küchler , Frank Leong , Thomas Baier , Arie Geert Cornelis Koppelaar
CPC classification number: H04L25/0202 , G07C9/00309 , G07C9/00658 , H04L7/042 , H04L27/2662 , H04L27/2692
Abstract: A processing module for a receiver device configured to provide for processing of a frame received by the receiver device from a transmitter device, the at least one frame comprising a plurality of repeating predetermined synchronization symbols for providing synchronization between the processing module and the transmitter device and one or more start-of-frame symbols defining the end of the synchronization symbols, the processing module configured to: perform cross correlation to obtain a cross-correlation function on i) at least a part of the received frame; with ii) a predetermined modulation sequence used to modulate the one or more start-of-frame symbols and not the synchronization symbols; and determine the location of the start-of-frame symbols based on an increase, above a threshold increase, in the cross-correlation function from a negative cross-correlation with the synchronization symbols to a greater cross-correlation with the part of the received frame containing the start-of-frame symbols.
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公开(公告)号：US20180254910A1
公开(公告)日：2018-09-06
申请号：US15898998
申请日：2018-02-19
Applicant: NXP B.V.
Inventor： Jan Dutz , Wolfgang Küchler , Frank Leong , Thomas Baier , Arie Geert Cornelis Koppelaar
Abstract: A processing module for a first lock device of a range determination system, the range determination system comprising a lock group comprising a plurality of lock devices of which the first lock device forms part, the plurality of lock devices physically spaced over a lockable element and configured to communicate with a key group comprising a plurality of key devices, a shortest distance between any one of the key devices of the key group and any one of the lock devices of the lock group providing for access to the lockable element relative to a threshold distance.
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公开(公告)号：US20180254870A1
公开(公告)日：2018-09-06
申请号：US15898304
申请日：2018-02-16
Applicant: NXP B.V.
Inventor： Jan Dutz , Wolfgang Küchler , Frank Leong , Thomas Baier , Arie Geert Cornelis Koppelaar
IPC: H04L5/00
Abstract: A processing module for a receiver device is disclosed. The processing module is configured to provide for processing of a signal received by the receiver device from a transmitter device. The signal includes a secure training sequence divided into a plurality of time spaced blocks. The secure training sequence incoudes a non-repeating pattern of symbols. The processing module is configured to, based on a first phase marker in the first block and a second phase marker in the second block defining a phase difference of the signal between the first and second antennas and a known spacing of the first antenna relative to the second antenna, determine an angle of arrival of the signal relative to the receiver device.
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