公开(公告)号：US12123970B2

公开(公告)日：2024-10-22

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

CPC classification number: G01S7/354 ,  G01S13/584 ,  G01S7/356

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.

公开(公告)号：US12066520B2

公开(公告)日：2024-08-20

申请号：US17233952

申请日：2021-04-19

Applicant: NXP B.V.

Inventor： Ryan Haoyun Wu ,  Dongyin Ren ,  Wendi Zhang ,  René Geraets

IPC: G01S13/58 ,  G01S7/292

CPC classification number: G01S13/581 ,  G01S7/2923

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.

公开(公告)号：US20240192353A1

公开(公告)日：2024-06-13

申请号：US18064072

申请日：2022-12-09

Applicant: NXP B.V.

Inventor： Ryan Haoyun Wu ,  Dongyin Ren

IPC: G01S13/60 ,  G01S13/58 ,  G01S13/931

CPC classification number: G01S13/60 ,  G01S13/584 ,  G01S13/931 ,  G01S2013/93271

Abstract: A radar system includes transmitter and receiver antennas positioned to illuminate and receive reflections from a ground surface, a processor, and a non-transitory computer-readable medium. The processor obtains ground reflections, the corresponding ranges, and measured radial velocities, and determines a set of test ego velocities. For each test ego velocity and ground reflection, the processor generates a test radial velocity. The processor determines an absolute difference between the test radial velocity and the measured radial velocity, and whether the absolute difference satisfies a criterion. In response to satisfying the criterion, the absolute difference is accumulated into a total cost for the test ego velocity. After each ground reflection and test ego velocity is analyzed, the processor compares the total costs for the test ego velocities to obtain a smallest total cost and corresponding test ego velocity. The test ego velocity is an ego velocity of the radar system.

公开(公告)号：US11822005B2

公开(公告)日：2023-11-21

申请号：US17186750

申请日：2021-02-26

Applicant: NXP B.V.

Inventor： Ryan Haoyun Wu ,  Dongyin Ren ,  Wendi Zhang ,  René Geraets

IPC: G01S7/35 ,  G01S13/58

CPC classification number: G01S7/354 ,  G01S13/583

Abstract: Aspects of the present disclosure are directed toward apparatuses and/or methods involving the communication of radar signals. Certain aspects involve communicating time division multiplexing (TDM) multi-input multi-output (MIMO) radar signals, having pulses with a chirp interval time (CIT) that is different for respective chirps. Positional characteristics of a target may be ascertained based upon both the CIT between each chirp in the communicated radar signals and the time between each corresponding chirp in received ones of the signals reflected by the target. Communication of the radar signals may involve utilizing a combination of antennas to provide a virtual aperture.

公开(公告)号：US20230324509A1

公开(公告)日：2023-10-12

申请号：US17715520

申请日：2022-04-07

Applicant: NXP B.V.

Inventor： Ryan Haoyun Wu ,  Dongyin Ren ,  Satish Ravindran

IPC: G01S7/35 ,  G01S13/58 ,  G01S13/931

CPC classification number: G01S7/354 ,  G01S7/356 ,  G01S13/584 ,  G01S13/931

Abstract: A linear chirp radar system, apparatus and method use a radar control processing unit to control an LFM radar front end which generates analog-to-digital (ADC) sample signals from one or more target return signals received in response to transmitted linear chirp radar signals, where the radar control processing unit is connected and configured to mitigate range migration by directly filtering the ADC samples using a modified Doppler filter that is tuned to fast-time scaled, slow-time frequencies to generate a focused ADC Doppler cube, and by applying a Fourier Transform on each Doppler cell in the focused ADC Doppler cube to generate a focused range-Doppler cube.

公开(公告)号：US20230305104A1

公开(公告)日：2023-09-28

申请号：US18182763

申请日：2023-03-13

Applicant: NXP B.V.

Inventor： Andries Pieter Hekstra ,  Alessio Filippi ,  Arie Geert Cornelis Koppelaar ,  Ryan Haoyun Wu ,  Dongyin Ren ,  Feike Guus Jansen ,  Jeroen Overdevest ,  Joerg Heinrich Walter Wenzel

IPC: G01S7/35 ,  G01S13/58

CPC classification number: G01S7/354 ,  G01S13/584 ,  G01S7/356

Abstract: A radar receiver comprising: an ADC (510) that samples analogue intermediate frequency, IF, signalling in order to generate digital signalling, wherein the digital signalling comprises a plurality of digital-values; a digital processor that populates a 2-dimensional array of bin-values based on the digital-values, such that: a first axis of the 2-dimensional array is a fast time axis and a second axis of the 2-dimensional array is a slow time axis; and a sampling-rate-adjuster that is configured to set a sampling rate associated with the bin-values in the 2-dimensional array based on an index of the slow time axis. The digital processor also performs DFT calculations on the bin-values in the 2-dimensional array along the fast time axis and the slow time axis in order to determine the range and velocity of any detected objects.

公开(公告)号：US20220276338A1

公开(公告)日：2022-09-01

申请号：US17186750

申请日：2021-02-26

Applicant: NXP B.V.

Inventor： Ryan Haoyun Wu ,  Dongyin Ren ,  Wendi Zhang ,  René Geraets

IPC: G01S7/35 ,  G01S13/58

Abstract: Aspects of the present disclosure are directed toward apparatuses and/or methods involving the communication of radar signals. Certain aspects involve communicating time division multiplexing (TDM) multi-input multi-output (MIMO) radar signals, having pulses with a chirp interval time (CIT) that is different for respective chirps. Positional characteristics of a target may be ascertained based upon both the CIT between each chirp in the communicated radar signals and the time between each corresponding chirp in received ones of the signals reflected by the target. Communication of the radar signals may involve utilizing a combination of antennas to provide a virtual aperture.