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公开(公告)号：US20230161021A1
公开(公告)日：2023-05-25
申请号：US18048132
申请日：2022-10-20
Applicant: NXP B.V.
IPC: G01S13/06
CPC classification number: G01S13/06
Abstract: An apparatus comprising a processor configured to:
receive an input dataset indicative of radar signals received at a plurality of antenna elements from a plurality of targets;
define a matrix, Ã, of direction-of-arrival-angle vectors representing an expected response of the radar signals from the target and comprising a function of a direction of arrival angle relative to the antenna elements and including antenna-imperfection-factors that represent the angle dependent effect of antenna imperfections;
define an objective function based on the input dataset and the matrix;
search for a set of the direction of arrival angles for each of the plurality of targets by the repeated evaluation of the objective function for a plurality of candidate matrices based on matrix A, wherein said set is derived from one of the candidate matrices of the plurality of candidate matrices that provides a maximum or minimum evaluation of the objective function.-
公开(公告)号：US20230152435A1
公开(公告)日：2023-05-18
申请号：US17818016
申请日：2022-08-08
Applicant: NXP B.V.
Inventor： Arie Geert Cornelis Koppelaar , Marco Jan Gerrit Bekooij , Francesco Laghezza , Feike Guus Jansen , Yiting Lu
CPC classification number: G01S13/34 , G06F1/03 , G06F17/156
Abstract: An apparatus configured to receive an input dataset, x, indicative of radar signals reflected from targets as received at a plurality of antenna elements; define a matrix, A, formed of direction-of-arrival-angle vectors, an, each direction-of-arrival-angle vector representing an expected response at the plurality of antenna elements of radar signals from one of the targets; define a signal amplitude vector s to represent expected complex amplitudes as received in the radar signals; define an objective function based on x, A and s; search for a set of direction of arrival angles for each of the plurality of targets by the repeated evaluation of the objective function for a plurality of candidate matrices based on matrix A; and wherein said search space comprises a plurality of discrete points, z, associated with the direction of arrival angles by a function of sin(θk).
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公开(公告)号：US20180248738A1
公开(公告)日：2018-08-30
申请号：US15871542
申请日：2018-01-15
Applicant: NXP B.V.
Inventor： Marinus van Splunter , Arie Geert Cornelis Koppelaar , Frank Leong
CPC classification number: H04L27/2695 , G01S13/0209 , G01S13/08 , G01S13/765 , G01S13/825 , G01S13/84 , G07C9/00309 , H04L27/2659 , H04L27/266 , H04L27/2662 , H04L27/2675 , H04L2027/0026 , H04L2027/0095
Abstract: An apparatus is configured to, based on a first signal comprising one or more data transmission frames received from a first radio device by a second radio device. The first signal has a particular carrier frequency of a carrier wave thereof and the one or more data transmission frames comprising a plurality of symbols provided at a particular symbol frequency. The carrier frequency and symbol frequency based on a reference clock frequency of the first radio device. One or more of an estimate of the particular carrier frequency is determined and an estimate of the particular symbol frequency relative to a reference clock frequency of the second radio device and provide for transmission of a response signal from the second radio device to the first radio device.
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公开(公告)号：US09426842B2
公开(公告)日：2016-08-23
申请号：US14306676
申请日：2014-06-17
Applicant: NXP B.V.
Inventor： Arie Geert Cornelis Koppelaar , Alessio Filippi , Artur Tadeusz Burchard , Hong Li
CPC classification number: H04W88/085 , H04B7/08
Abstract: A distributed radio system comprising a plurality of receivers (1,2,15), each receiver being adapted to receive radio signals and to transmit respective digital signals. The system further comprises a digital communication channel (3) coupled to the plurality of receivers (1,2,15) and adapted to receive the digital signals and to transmit the digital signals. The system comprises a base-band unit (4) coupled to the communication channel (3) and adapted to combine and process the digital signals, the digital signals comprising information available in each receiver (1,2,15) of the plurality of receivers for exploiting a diversity gain.
Abstract translation: 一种包括多个接收机（1,2,15）的分布式无线电系统，每个接收机适于接收无线电信号并发送相应的数字信号。 该系统还包括耦合到多个接收器（1,2,15）的数字通信信道（3），并且适于接收数字信号并发送数字信号。 该系统包括耦合到通信信道（3）并且适于组合和处理数字信号的基带单元（4），数字信号包括多个接收机（1,2,15）中可用的信息 以利用多样化增益。
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公开(公告)号：US20240385286A1
公开(公告)日：2024-11-21
申请号：US18318792
申请日：2023-05-17
Applicant: NXP B.V.
Inventor： Tarik Kazaz , Karan Jayachandra , Arie Geert Cornelis Koppelaar , Yiting Lu
Abstract: A non-transitory computer-readable medium stores machine instructions that cause a processor to obtain a range-sample-antenna data cube for a received radar signal comprising reflections of a plurality of interleaved chirp sequences. The processor generates, for each chirp sequence, a Hankel matrix based on subset of range bins for the particular chirp sequence, and generates a block Hankel matrix based on the Hankel matrices for the plurality of interleaved chirp sequences. The processor performs truncated singular value decomposition to estimate subspaces, and object detection to identify selection matrices. The processor calculates least-squares approximations for the selection matrices and the block Hankel matrix to obtain, for each chirp sequence, a first phase shift matrix θ11 and a second set of phase shift matrices θ1l, l=2, . . . , L. The processor performs joint diagonalization and Doppler division multiplexing compensation on θ11 and θ1l, l=2, . . . , L, then resolves ambiguities in determined velocities based on comparison of θ11 and θ1l, l=2, . . . , L.
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Patent Agency Ranking
公开(公告)号：US20240361445A1
公开(公告)日：2024-10-31
申请号：US18139531
申请日：2023-04-26
Applicant: NXP B.V.
Inventor： Özgün Paker , Arie Geert Cornelis Koppelaar
IPC: G01S13/72 , G01S7/41 , G01S13/931
CPC classification number: G01S13/726 , G01S7/415 , G01S13/931
Abstract: A method includes producing, at a radar sensor, a plurality of radar data points based on radar signal reflections received at the radar sensor. The method further includes, for one or more respective radar data points of the plurality of radar data points, calculating at the radar sensor a data item indicative of a measurement accuracy corresponding to the respective radar data point. The radar sensor then transmits the plurality of radar data points and the data item for each respective radar data point to a central radar processor. The data item is used to update a covariance matrix implemented by a Kalman filter at the central radar processor during the object tracking process.
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公开(公告)号：US12019141B2
公开(公告)日：2024-06-25
申请号：US17451515
申请日：2021-10-20
Applicant: NXP B.V.
IPC: G01S13/532 , G01S7/288 , G01S7/40 , G01S13/58 , G01S13/87 , G01S13/931
CPC classification number: G01S13/532 , G01S7/2883 , G01S7/40 , G01S13/584 , G01S7/4004 , G01S13/878 , G01S2013/93271
Abstract: A radar processor for processing a frame of radar data received from one or more targets, the frame of radar data having a carrier frequency and comprising a sequence of codewords with a codeword repetition interval, wherein the carrier frequency and the codeword repetition interval define an unambiguous velocity range, the radar processor configured to: receive the frame of radar data; transform the frame to obtain a velocity data array; apply a correction algorithm to the velocity data array to correct a Doppler shift of the frame to obtain a corrected array, wherein the correction algorithm comprises a set of Doppler correction frequencies corresponding to a set of velocity gates and at least one of the set of Doppler correction frequencies corresponds to a velocity gate outside the unambiguous velocity range; and perform range processing on the corrected array to obtain a range-Doppler map.
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公开(公告)号：US11558074B2
公开(公告)日：2023-01-17
申请号：US16878381
申请日：2020-05-19
Applicant: NXP B.V.
Inventor： Özgün Paker , Arie Geert Cornelis Koppelaar
Abstract: Aspects of the present disclosure may involve use of a radio frequency receiver and in such a receiver, tracking multipath gains and delays of multipath reflections corresponding to an OFDM multipath transmission channel. The gains and delays are based on time-domain evolution of the channel impulse response. Multipath reflections are searched for and then used to calculate channel correlation information to provide channel estimations to aid in mitigating or cancelling distortion of the received signal.
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公开(公告)号：US10812119B1
公开(公告)日：2020-10-20
申请号：US16445924
申请日：2019-06-19
Applicant: NXP B.V.
Abstract: Interference cancellation is provided, according to certain aspects, by a filter, a signal detection circuit, synthesis circuitry and signal-generation circuitry. The filter is used to filter an incoming signal having an associated signal-to-noise metric and to output therefrom a filtered signal having an interference attribute of the incoming signal by amplification and/or isolation. The signal detection circuit is used to detect the interference attribute in the filtered signal. The synthesis circuitry is used to synthesize interference in the incoming signal based on the interference attribute. The signal-generation circuitry is used to generate, in response to the synthesized interference in the incoming signal, a filtered version of the incoming signal which provides an improved signal-to-noise metric.
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公开(公告)号：US10805092B2
公开(公告)日：2020-10-13
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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