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

IPC: G01S7/35 ,  G01S13/42

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.

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

IPC: G01S7/295 ,  G01S7/28 ,  G01S13/50 ,  G01S7/288

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.

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.

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

IPC: G01S7/35 ,  G01S7/41 ,  G01S13/34 ,  G01S13/50

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.

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

IPC: H04B7/08 ,  G01S3/74

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.