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：US20230095228A1

公开(公告)日：2023-03-30

申请号：US17484119

申请日：2021-09-24

Applicant: NXP B.V.

Inventor： Ryan Haoyun Wu ,  Dongyin Ren ,  Satish Ravindran

IPC: G01S7/35 ,  G01S13/58

Abstract: Aspects of the present disclosure are directed to radar and radar processing. As may be implemented in accordance with one or more embodiments involving multi-input multi-output (MIMO) co-prime radar signals transmitted by a plurality of transmitters and reflected from at least one target, the reflected radar signals are processed by resolving ambiguities associated with a range-Doppler detection based on unique pulse repetition frequencies (PRF)s associated with respective chirp groups of the reflected radar signals. Phase compensation is applied to compensate for motion-induced phased biases and, thereafter, Doppler estimates are reconstructed to provide a dealiased version of the reflected radar signals.