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.

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

IPC: G01S7/02 ,  G01S7/35

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.

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

IPC: G01S13/04 ,  G01S7/41

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.

公开(公告)号：US11799537B2

公开(公告)日：2023-10-24

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 ,  G01S13/68 ,  G01S13/72

CPC classification number: H04B7/086 ,  G01S13/68 ,  G01S13/72

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.

公开(公告)号：US20230314560A1

公开(公告)日：2023-10-05

申请号：US17711438

申请日：2022-04-01

Applicant: NXP B.V.

Inventor： Ryan Haoyun Wu ,  Satish Ravindran ,  Maik Brett

IPC: G01S7/295 ,  G01S7/288 ,  G06F9/54 ,  G06F9/38

CPC classification number: G01S7/2955 ,  G01S7/2883 ,  G06F9/545 ,  G06F9/3877

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.

公开(公告)号：US20230160997A1

公开(公告)日：2023-05-25

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 ,  G01S13/931 ,  G01S7/40 ,  G01S7/4865

CPC classification number: G01S7/023 ,  G01S13/931 ,  G01S7/4026 ,  G01S7/4865

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：US20230128469A1

公开(公告)日：2023-04-27

申请号：US17491596

申请日：2021-10-01

Applicant: NXP B.V.

Inventor： Douglas Alan Garrity ,  Ryan Haoyun Wu ,  Maik Brett

IPC: G01S7/292 ,  G01S7/35

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.

公开(公告)号：US10921434B2

公开(公告)日：2021-02-16

申请号：US16014226

申请日：2018-06-21

Applicant: NXP B.V.

Inventor： Gustavo Guarin Aristizabal ,  Ralf Reuter ,  Maik Brett

IPC: G01S13/34 ,  G01S7/35 ,  G01S13/931 ,  G01S13/32 ,  G01S7/40 ,  G01S13/26 ,  G01S13/58 ,  G01S13/88 ,  G01S13/24

Abstract: A method of detecting an object is disclosed, comprising generating a transmission signal by generating a carrier signal and digitally modulating the carrier signal with a transmission modulation signal, and transmitting the transmission signal. A reflected signal is received, the reflected signal having been reflected from the object, and demodulated to extract a received modulation signal. The received modulation signal is correlated with the transmission modulation signal and a range of the object is determined from the correlation of the received modulation signal and the transmission modulation signal.