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公开(公告)号：US11709225B2
公开(公告)日：2023-07-25
申请号：US16906655
申请日：2020-06-19
Applicant: NXP B.V.
Inventor： Marco Jan Gerrit Bekooij , Feike Guus Jansen
CPC classification number: G01S7/354 , G01S7/4056 , G01S13/723 , G01S13/9047 , G01S7/356
Abstract: Exemplary aspects are directed to or involve a radar transceiver to transmit signal and receive reflected radar signals via a communication channel. The exemplary method includes radar receiver data processing circuitry that may be used to differentiate a subset of representations of the received signals. This differentiation may be used to select signals that are more indicative of target(s) having a given range than other ones of the received signals. The received signal's representations may then be compressed by using variable-mantissa floating-point numbers having mantissa values that vary based, at least in part, on at least one strength characteristic of the respective representations.
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公开(公告)号：US12287391B2
公开(公告)日：2025-04-29
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
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：US20210389443A1
公开(公告)日：2021-12-16
申请号：US16900580
申请日：2020-06-12
Applicant: NXP B.V.
Inventor： Marco Jan Gerrit Bekooij , René Geraets
Abstract: Exemplary aspects are directed to circuitry that assesses and differentiates a set of targeted data and updates a high-level bin with a numerical value indicating the number of data elements that compared successfully with a predefined value range defined for each bin. A cumulative sum of the high-level bins may then be calculated. Following, a target threshold may be compared to the cumulative sum at each bin and then providing an indication upon discovering a cumulative sum exceeding the threshold. The targeted data may be further refined by changing (through circuitry or other intervention) the predefined range values and then reprocessing the targeted data.
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公开(公告)号：US20240111012A1
公开(公告)日：2024-04-04
申请号：US18473342
申请日：2023-09-25
Applicant: NXP B.V.
Inventor： Anusha Ravish Suvarna , Marco Jan Gerrit Bekooij , Francesco Laghezza
Abstract: An apparatus configured to:
receive an input dataset indicative of the amplitude and phase of radar signals received at a plurality of antenna elements;
determine an objective function;
determine a beam forming spectrum, the beam forming spectrum comprising a correlation of the input dataset with a set of beamsteering vectors;
perform a first determination process for evaluation of the objective function comprising the processor being configured to:
identify two or more peaks in the beam forming spectrum based on a predetermined threshold level, determine candidate direction-of-arrival angles therefrom for definition of a first-reduced search space;
perform a second determination process for evaluation of the objective function comprising the processor being configured to:
determine a peak direction-of-arrival angle comprising the direction-of-arrival angle that corresponds to a peak in the beam forming spectrum:
evaluate the objective function over the first reduced search space and using the peak direction-of-arrival angle.-
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.-
Patent Agency Ranking
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：US20210396840A1
公开(公告)日：2021-12-23
申请号：US16906655
申请日：2020-06-19
Applicant: NXP B.V.
Inventor： Marco Jan Gerrit Bekooij , Feike Guus Jansen
Abstract: Exemplary aspects are directed to or involve a radar transceiver to transmit signal and receive reflected radar signals via a communication channel. The exemplary method includes radar receiver data processing circuitry that may be used to differentiate a subset of representations of the received signals. This differentiation may be used to select signals that are more indicative of target(s) having a given range than other ones of the received signals. The received signal's representations may then be compressed by using variable-mantissa floating-point numbers having mantissa values that vary based, at least in part, on at least one strength characteristic of the respective representations.
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公开(公告)号：US20240142617A1
公开(公告)日：2024-05-02
申请号：US18479861
申请日：2023-10-03
Applicant: NXP B.V.
Inventor： Yiting Lu , Arie Geert Cornelis Koppelaar , Marco Jan Gerrit Bekooij
Abstract: An apparatus comprising a processor configured to receive an input dataset of radar signals received at a plurality of antenna elements that are arranged in a first plane; define a matrix of beamsteering vectors each representing an expected response at the antenna elements of the radar signals from the respective target and comprising a function of a first direction of arrival, DoA, angle θ, relative to the plurality of antenna elements, and a second DoA angle Φ, wherein the first DoA angle comprises a function of an elevation angle and the second DoA angle comprises an azimuth angle to the respective target, wherein the azimuth angle lies in a second plane that is arranged perpendicular to the first plane; define an objective function; search for a set of the first and second DoA angles for each of the plurality of targets by the repeated evaluation of the objective function.
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公开(公告)号：US20240133999A1
公开(公告)日：2024-04-25
申请号：US18483792
申请日：2023-10-10
Applicant: NXP B.V.
Abstract: A method of processing radar data comprising: receiving a mask that identifies a set of samples in received radar signalling that are detected as including interference, and comprises a matrix of data having a fast-time dimension and a slow-time dimension; receiving radar data comprising a matrix of samples of received radar signalling having a fast-time dimension and a slow-time dimension wherein the set of samples identified by the mask have been set to a predetermined value to remove said samples including interference; determining a reconstruction of the radar data in which at least the set of samples of the radar data are replaced with estimated samples, wherein said determining a reconstruction of the radar data comprises formulating an optimization problem based on the radar data and the mask, and applying an iterative method to solve the optimization problem at least in part in the range-Doppler domain.
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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.
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