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公开(公告)号：US11927664B2
公开(公告)日：2024-03-12
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
CPC classification number: G01S13/04 , G01S7/41 , G01S2013/0245
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：US20230418897A1
公开(公告)日：2023-12-28
申请号：US17819988
申请日：2022-08-16
Applicant: NXP B.V.
Inventor： Christian Tuschen , Maik Brett , Prabhjot Singh , Anshul Goel , Pranshu Agrawal
CPC classification number: G06F17/142 , G06F7/74 , G06F5/01
Abstract: Performing a Fast Fourier Transformation (FFT) with increased resolution by applying an adaptive left shift to signed binary integers of an input of a radix kernel and adaptive right shift to signed binary integers of an output of a butterfly of the radix kernel which is based on a leading bit count of the input. The adaptive left shift increases a resolution of the radix kernel computation and the adaptive right shift determines a number of bits of the increased resolution preserved in an output of the radix kernel.
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3.发明授权公开(公告)号：US11994611B2
公开(公告)日：2024-05-28
申请号：US17491596
申请日：2021-10-01
Applicant: NXP B.V.
Inventor： Douglas Alan Garrity , Ryan Haoyun Wu , Maik Brett
Abstract: A radar system, apparatus, architecture, and method are provided with a transmitter that produces a plurality of distinct FanTOM signals that are transmitted as N RF-encoded transmit signals in an overlapped fashion such that the pulse repetition interval and frame length are kept short; a receiver that processes target return signals reflected from the N RF-encoded transmit signals with a mixer to produce an IF signal which is filtered with one or more notch filters clocked with a sampling clock frequency to control harmonic notch frequencies to suppress transmitter spill-over and close-in self-clutter interference, thereby producing a filtered IF signal that is converted to a digital signal with an analog-to-digital converter that is clocked with the sampling clock frequency; and a radar processor that processes the digital signal to generate a range spectrum comprising N segments that correspond, respectively, to the N RF-encoded transmit signals.
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公开(公告)号：US20220390555A1
公开(公告)日：2022-12-08
申请号：US17329470
申请日：2021-05-25
Applicant: NXP B.V.
Inventor： Ryan Haoyun Wu , Dongyin Ren , Michael Andreas Staudenmaier , Maik Brett
Abstract: Aspects of the disclosure are directed to apparatuses, systems and methods for radar processing. As may be implemented in accordance with one or more aspects herein, an apparatus may include receiver circuitry to receive and sample radar signals reflected from a target, and processing circuitry to carry out the following. Representations of the reflections are transformed into the time-frequency domain where they are oversampled. The oversampled representations of the reflections are inversely transformed to provide resampled reflections. Positional characteristics of the target may then be ascertained by constructing a range response characterizing the target based on the resampled reflections.
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公开(公告)号：US20220268884A1
公开(公告)日：2022-08-25
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
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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Patent Agency Ranking
公开(公告)号：US20220268883A1
公开(公告)日：2022-08-25
申请号：US17185162
申请日：2021-02-25
Applicant: NXP B.V.
Inventor： Ryan Haoyun Wu , Jun Li , Maik Brett , Michael Andreas Staudenmaier
Abstract: In various examples, a radar system includes a logic circuit with an array for processing radar reflection signals. In a specific example, a method includes generating output data indicative of the reflection signals' amplitudes, and discerning angle-of-arrival information for the output data for the output data by correlating the output data with an iteratively-refined estimate of a sparse spectrum support vector (“support vector”). The approach may include: assessing at least one most probable spectrum support vector from among a plurality of most probable spectrum support vectors modeled as random values in a matrix drawn from a long-tail distribution that is controlled as a function of a scaling parameter; and update a set of parameters including a covariance estimate, the scaling parameter, and a noise variance parameter which is being associated with a measurement error for said at least one most probable spectrum support vector from a previous iteration.
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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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公开(公告)号：US11668790B2
公开(公告)日：2023-06-06
申请号：US17329470
申请日：2021-05-25
Applicant: NXP B.V.
Inventor： Ryan Haoyun Wu , Dongyin Ren , Michael Andreas Staudenmaier , Maik Brett
CPC classification number: G01S7/356 , G01S7/411 , G01S13/347 , G01S13/505
Abstract: Aspects of the disclosure are directed to apparatuses, systems and methods for radar processing. As may be implemented in accordance with one or more aspects herein, an apparatus may include receiver circuitry to receive and sample radar signals reflected from a target, and processing circuitry to carry out the following. Representations of the reflections are transformed into the time-frequency domain where they are oversampled. The oversampled representations of the reflections are inversely transformed to provide resampled reflections. Positional characteristics of the target may then be ascertained by constructing a range response characterizing the target based on the resampled reflections.
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公开(公告)号：US20230053001A1
公开(公告)日：2023-02-16
申请号：US17387128
申请日：2021-07-28
Applicant: NXP B.V.
Inventor： Ryan Haoyun Wu , Dongyin Ren , Michael Andreas Staudenmaier , Maik Brett
Abstract: Aspects of the present disclosure are directed to radar signal processing apparatuses and methods. As may be implemented in accordance with one or more embodiments, digital signals representative of received reflections of radar signals transmitted towards a target are mathematically processed to provide or construct a matrix pencil based on or as a function of a forward-backward matrix. Eigenvalues of the matrix pencil are computed and an estimation of the direction of arrival (DoA) of the target is output based on the computed eigenvalues.
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