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公开(公告)号：US11906651B2
公开(公告)日：2024-02-20
申请号：US17185040
申请日：2021-02-25
Applicant: NXP B.V.
Inventor： Ryan Haoyun Wu , Jun Li , Maik Brett , Michael Andreas Staudenmaier
IPC: G01S7/35 , G01S13/42 , G01S7/52 , G01S13/931
CPC classification number: G01S7/354 , G01S7/52047 , G01S13/42 , G01S7/356 , G01S13/931
Abstract: Exemplary aspects are directed to a radar-based detection circuit or system with signal reception circuitry to receive reflection signals in response to radar signals transmitted towards objects. The system may include logic/computer circuitry and a multi-input multi-output (MIMO) virtual array to enhance resolution or remove ambiguities otherwise present in processed reflection signals. The MIMO array may include sparse linear arrays, each being associated with a unique antenna-element spacing from among a set of unique co-prime antenna-element spacings.
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公开(公告)号：US20230305111A1
公开(公告)日：2023-09-28
申请号：US17702695
申请日：2022-03-23
Applicant: NXP B.V.
Inventor： Jihwan Youn , Satish Ravindran , Ruud van Sloun , Ryan Haoyun Wu , Jun Li
CPC classification number: G01S7/417 , G06N3/0481 , G01S3/143 , G01S7/415 , G01S2013/0245
Abstract: Embodiments of systems and methods for estimating direction of arrival are disclosed. A device includes a signal processing unit that includes processing circuitry and memory coupled to the processing circuitry, where the processing circuitry includes multiple vector processing units, each vector processing unit configured to receive an antenna input vector, receive an angular spectrum vector, retrieve a first and second weighting vectors from the memory, generate a processed antenna input vector by performing a circular convolution of the antenna input vector with the first weighting vector, generate a processed angular spectrum vector by performing a circular convolution of the angular spectrum vector with the second weighting vector, and generate a refined angular spectrum vector, which indicates angular position of one or more radar targets, by applying a non-linear activation function to a sum of the processed antenna input vector and the processed angular spectrum vector.
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公开(公告)号：US20230280446A1
公开(公告)日：2023-09-07
申请号：US17685668
申请日：2022-03-03
Applicant: NXP B.V.
Inventor： Dongyin Ren , Ryan Haoyun Wu , Satish Ravindran
Abstract: A linear chirp radar system, apparatus and method use a radar control processing unit to control an LFM radar front end which includes a frequency-scanning transmit antenna and a frequency-scanning receive antenna which respectively sweep a transmit and receive energy focus across an angle space with each linear chirp signal, where the radar control processing unit processes digital output signals generated from target return signals received in response to transmitted linear chirp signals and extracts target range-angle information by applying time-frequency analysis processing to the digital output signals to generate a first range-angle map which includes range-biased angle information, and then applying a group delay compensation process to generate a second range-angle map which includes target range-angle information that is generated by selectively adjusting the range-biased angular information in the first range-angle map with an angular adjustment.
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公开(公告)号：US20220349986A1
公开(公告)日：2022-11-03
申请号：US17245613
申请日：2021-04-30
Applicant: NXP B.V.
Inventor： Ryan Haoyun Wu , Jun Li , Maik Brett , Michael Andreas Staudenmaier
Abstract: Aspects of the present disclosure are directed to implementations involving the transmission of radar signals and the processing of reflections of those signals as received from a target. As may be implemented with one or more embodiments, a spectrogram may be produced by converting reflections, of transmitted radar signals from a target, into a time-frequency domain using a time-frequency analysis. One or more suppression thresholds is determined for at least one frequency signal in the spectrogram, based on frequency characteristics of the converted reflections. A range response is constructed, characterizing the target and having interference signals removed in the time-frequency domain, by converting (into the range response) selected ones of the frequency signals in the spectrogram having a magnitude within the suppression threshold.
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公开(公告)号：US20220334240A1
公开(公告)日：2022-10-20
申请号：US17233952
申请日：2021-04-19
Applicant: NXP B.V.
Inventor： Ryan Haoyun Wu , Dongyin Ren , Wendi Zhang , René Geraets
Abstract: Aspects of the present disclosure are directed to radar communications with disparate pulse repetition intervals, as may be implemented with radar transmission, receiver and processing circuitry. As may be utilized in accordance with one or more embodiments herein, time division multiplexing (TDM) multi-input multi-output (MIMO) radar signals are transmitted by transmitting sets of successive radar signals, each set having a pulse repetition interval (PRI) that is different than the PRI of sets of radar signals transmitted in another one of the sets. Positional characteristics of a target may be ascertained based on the PRI used in each of the sets and on phase characteristics of ones of the radar signals reflected from the target.
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Patent Agency Ranking
公开(公告)号：US20220268911A1
公开(公告)日：2022-08-25
申请号：US17185115
申请日：2021-02-25
Applicant: NXP B.V.
Inventor： Ryan Haoyun Wu , Jun Li , Maik Brett , Michael Andreas Staudenmaier
Abstract: In one example, a radar circuit uses computer processing circuitry for processing data corresponding to reflection signals via a sparse array. Output data indicative of signal magnitude associated with the reflection signals is generated, and then angle-of-arrival information is discerned therefrom by (e.g., iteratively): correlating the output data with at least one spatial frequency support vector indicative of a correlation peak for the output data; generating upper-side and lower-side support vectors which are neighbors along the spatial frequency spectrum for said at least one spatial frequency support vector, and providing, via a correlation of the upper-side and lower-side support vectors and said at least one spatial frequency support vector, at least one new vector that is more refined along the spatial frequency spectrum for said at least one spatial frequency support vector.
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公开(公告)号：US12123966B2
公开(公告)日：2024-10-22
申请号：US17533906
申请日：2021-11-23
Applicant: NXP B.V.
Inventor： Ryan Haoyun Wu , Feike Guus Jansen , Michael Andreas Staudenmaier , Maik Brett
IPC: G01S7/02 , G01S7/40 , G01S7/4865 , G01S13/931
CPC classification number: G01S7/023 , G01S7/4026 , G01S7/4865 , G01S13/931
Abstract: Described are method and systems that implement time frequency domain threshold interference and localization fusion to resolve interference issues in an automotive radar system, that produces spectrograms using Short-Time Fourier Transform (STFT) for all receiving antennas of the automotive radar system. For each STFT frequency a suppression threshold is determined. Interference is isolated for each STFT frequency by removing the interference from samples that are above the suppression threshold by using a filter. Direction of Arrival (DoA) is estimated for each interference spectrogram cell using measurements from all the receiving antennas. Interference samples are clustered using the DoA into epochs of chirps.
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公开(公告)号：US12050284B2
公开(公告)日：2024-07-30
申请号：US17711438
申请日：2022-04-01
Applicant: NXP B.V.
Inventor： Ryan Haoyun Wu , Satish Ravindran , Maik Brett
CPC classification number: G01S7/2955 , G01S7/2883 , G06F9/3877 , G06F9/545
Abstract: A vehicle radar system, apparatus and method use a radar control processing unit to generate a target response signal in at least a first dimension from compressed radar data signals and to perform cell-averaging constant false alarm rate (CA-CFAR) target detection by convolving the target response signal with a weighted kernel window signal in a frequency domain using a Fast Fourier Transform hardware accelerator, an element-wise multiplier, and an Inverse Fast Fourier Transform hardware accelerator to generate an output signal having a sign that indicates a target detection decision.
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9.发明公开公开(公告)号：US20240168148A1
公开(公告)日：2024-05-23
申请号：US17990681
申请日：2022-11-19
Applicant: NXP B.V.
Inventor： Ryan Haoyun Wu , Dongyin Ren , Jun Li
IPC: G01S13/42 , G01S7/42 , H04B7/0413
CPC classification number: G01S13/42 , G01S7/42 , H04B7/0413
Abstract: A distributed aperture radar system, apparatus, architecture, and method are provided for generating a completed virtual array aperture by using a radar control processing unit to construct a sparse forward-backward matrix from one or more sparse measurement array vectors and to generate beamforming outputs of a completed virtual array aperture by performing forward-backward matrix completion processing of the sparse forward-backward matrix to construct a completed forward-backward matrix by filling holes in the sparse MIMO virtual array aperture to suppress spurious sidelobes caused by holes in the sparse forward-backward matrix, thereby enabling computation of one or more super resolution direction of arrival (DoA) estimation values based on the completed forward-backward matrix.
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公开(公告)号：US20230204748A1
公开(公告)日：2023-06-29
申请号：US17564826
申请日：2021-12-29
Applicant: NXP B.V.
Inventor： Dongyin Ren , Ryan Haoyun Wu , Satish Ravindran
IPC: G01S13/42 , G01S13/931 , H01Q1/32
CPC classification number: G01S13/424 , G01S13/931 , H01Q1/3233 , G01S2013/93271
Abstract: A vehicle radar system, apparatus and method use a radar control processing unit to control an RF transmitter unit to generate a radiated beam by a long and medium range radar (LMRR) beam shaping antenna array which has a range coverage pattern with more power concentrated along a central direction axis for long range detection and less power spread off to sides of the central direction axis for medium range detection, wherein the LMRR beam shaping antenna array includes a plurality of transmit radiator elements stacked over a power dividing feeding network and separated by a conductive coupling aperture layer comprising a plurality of coupling apertures such that each transmit radiator element is aligned through a corresponding coupling aperture to a corresponding feeding line conductor from the power dividing feeding network.
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