公开(公告)号：US20220283283A1

公开(公告)日：2022-09-08

申请号：US17190222

申请日：2021-03-02

Applicant: NXP B.V.

Inventor： Arie Geert Cornelis Koppelaar ,  Yiting Lu ,  Francesco Laghezza ,  Feike Guus Jansen

IPC: G01S13/44

Abstract: A mechanism is provided for determining an unambiguous direction of arrival (DoA) for radio frequency (RF) signals received by a sparse array. A DoA angle domain is split into hypothesis regions. The hypothesis regions are derived from the phase differences of the antenna element pairs used for the DoA angle estimate. In each hypothesis region, the ambiguous phase of antenna element pairs is unwrapped according to expected wrap-around. After unwrapping the phase, for each hypothesis region, a phasor is calculated by combining the individual antenna element pair phasors. The hypothesis region that obtains the phasor with a largest amplitude is selected as the most likely DoA region and the phase of the winning phasor is used as an unambiguous estimate for the DoA angle.

公开(公告)号：US20220066012A1

公开(公告)日：2022-03-03

申请号：US17006503

申请日：2020-08-28

Applicant: NXP B.V.

Inventor： Feike Guus Jansen ,  Francesco Laghezza ,  Saif Alhasson

IPC: G01S13/34 ,  H04B1/38 ,  H04B1/00 ,  H04B1/18 ,  G01S13/931

Abstract: In imaging radar, examples are directed to uses of multiple sets of transmit antenna included with transceiver circuitry, for transmitting in a plurality of modes. Transmissions may involve having at least one transmit antenna, from each of at least two of the multiple sets, to transmit continuous-wave energy concurrently (simultaneously) in one or more of the plurality of different modes. Transceiver circuitry may include multiple receive antennas which may be receiving reflections of the continuous-wave energy from various targets. Signals from the multiple receive antennas may route to signal processing circuitry. The signal processing circuitry may respond to the received reflections of the continuous-wave energy by assessing differences in antenna gain and/or phase due to transmit antenna position associated with the received reflections. This signal processing assessment may mitigate or resolve at least one spatial ambiguity in at least one direction of arrival dimension associated with the received reflections.

公开(公告)号：US11204410B2

公开(公告)日：2021-12-21

申请号：US16272083

申请日：2019-02-11

Applicant: NXP B.V.

Inventor： Feike Guus Jansen ,  Francesco Laghezza ,  Franz Lampel

IPC: G01S7/35 ,  G01S13/34 ,  G01S13/931 ,  G01S13/87 ,  G01S7/02

Abstract: Aspects of the present disclosure are directed to a method and/or apparatus involving frequency modulated continuous wave (FMCW) radar signals. As my be implemented in accordance with one or more embodiments, receiver circuitry is configured and arranged to receive a FMCW radar signal having an information signal embedded into a radar waveform, and to indicate a relationship in the FMCW radar signal between beat frequency magnitude and time delay. A filter processing circuit is configured and arranged to filter the information signal in the FMCW radar signal by applying a group delay function based on the relationship between beat frequency magnitude and time delay. Signal processing circuitry is configured and arranged to detect a remote object by using the filtered FMCW radar signal.

公开(公告)号：US12228633B2

公开(公告)日：2025-02-18

申请号：US17491927

申请日：2021-10-01

Applicant: NXP B.V.

Inventor： Feike Guus Jansen

IPC: G01S13/42 ,  G01S13/32

Abstract: Aspects of the present disclosure are directed to radar transmissions and related componentry. As may be implemented in accordance with various embodiments, radar signals are generated and transmitted using both scanning and fixed beam analog signal codes concurrently/as combined for each radar signal. Reflections of the radar signals from a target are processed for ascertaining positional characteristics of the target.

公开(公告)号：US11573312B2

公开(公告)日：2023-02-07

申请号：US17190222

申请日：2021-03-02

Applicant: NXP B.V.

Inventor： Arie Geert Cornelis Koppelaar ,  Yiting Lu ,  Francesco Laghezza ,  Feike Guus Jansen

IPC: G01S13/44

Abstract: A mechanism is provided for determining an unambiguous direction of arrival (DoA) for radio frequency (RF) signals received by a sparse array. A DoA angle domain is split into hypothesis regions. The hypothesis regions are derived from the phase differences of the antenna element pairs used for the DoA angle estimate. In each hypothesis region, the ambiguous phase of antenna element pairs is unwrapped according to expected wrap-around. After unwrapping the phase, for each hypothesis region, a phasor is calculated by combining the individual antenna element pair phasors. The hypothesis region that obtains the phasor with a largest amplitude is selected as the most likely DoA region and the phase of the winning phasor is used as an unambiguous estimate for the DoA angle.

公开(公告)号：US20220187438A1

公开(公告)日：2022-06-16

申请号：US17451515

申请日：2021-10-20

Applicant: NXP B.V.

Inventor： Jeroen Overdevest ,  Feike Guus Jansen ,  Arie Geert Cornelis Koppelaar ,  Alessio Filippi

IPC: G01S13/532 ,  G01S13/58 ,  G01S7/288

Abstract: A radar processor for processing a frame of radar data received from one or more targets, the frame of radar data having a carrier frequency and comprising a sequence of codewords with a codeword repetition interval, wherein the carrier frequency and the codeword repetition interval define an unambiguous velocity range, the radar processor configured to: receive the frame of radar data; transform the frame to obtain a velocity data array; apply a correction algorithm to the velocity data array to correct a Doppler shift of the frame to obtain a corrected array, wherein the correction algorithm comprises a set of Doppler correction frequencies corresponding to a set of velocity gates and at least one of the set of Doppler correction frequencies corresponds to a velocity gate outside the unambiguous velocity range; and perform range processing on the corrected array to obtain a range-Doppler map.

公开(公告)号：US11294031B2

公开(公告)日：2022-04-05

申请号：US16512988

申请日：2019-07-16

Applicant: NXP B.V.

Inventor： Francesco Laghezza ,  Feike Guus Jansen

IPC: G01S7/41 ,  G01S13/931

Abstract: A mechanism is provided to determine if a short-range automotive radar detection is a direct reflection or an indirect (also known as “multipath”) reflection from a physical target object. The multipath information is further used to perform a height estimation of the object. Embodiments provide a radar system having a range resolution smaller than a path difference between the direct reflection path and the indirect reflection path. Both range separation techniques and Doppler separation techniques are utilized to provide a reliable and accurate estimation of the height of the object.

公开(公告)号：US20210255303A1

公开(公告)日：2021-08-19

申请号：US16790319

申请日：2020-02-13

Applicant: NXP B.V.

Inventor： Francesco Laghezza ,  Feike Guus Jansen

IPC: G01S13/58

Abstract: Embodiments are directed to a method for determining velocity of an object. The method includes in response to two interleaved chirp sequences being sent towards the object, processing responsive chirps of each of the two interleaved chirp sequences independently from one another to produce respective Doppler-spectrum data sets, and calculating the velocity of the object based on the respective Doppler-spectrum data sets. Each of the interleaved chirp sequences being characterized by a common time spacing between respective chirps of the respective chirp sequence, and each chirp of one of the chirp sequences being offset by an amount of time that is different than the common time spacing.

公开(公告)号：US09835723B2

公开(公告)日：2017-12-05

申请号：US14527840

申请日：2014-10-30

Applicant: NXP B.V.

Inventor： Feike Guus Jansen ,  Zoran Zivkovic

IPC: G01S13/93 ,  G01S7/292 ,  G01S13/58 ,  G01S13/22 ,  G01S13/34 ,  G01S13/42 ,  G01S13/524 ,  G01S13/00 ,  G01S7/35

CPC classification number: G01S13/931 ,  G01S7/2922 ,  G01S13/227 ,  G01S13/343 ,  G01S13/42 ,  G01S13/5246 ,  G01S13/582 ,  G01S13/584 ,  G01S2007/356 ,  G01S2013/9321

Abstract: Various exemplary embodiments relate to a method for determining the velocity of an object using radar system having a processor, including: receiving, by a processor, a first digital signal corresponding to a first transmit signal; receiving, by the processor, a second digital signal corresponding to a second transmit signal; processing the first digital signal to produce a first range/relative velocity matrix; detecting objects in the first range/relative velocity matrix to produce a first detection vector; unfolding the first detection vector; processing the second digital signal to produce a second range/relative velocity matrix; interpolating the second range/relative velocity matrix in the relative velocity direction wherein the interpolated second range/relative velocity matrix has a frequency spacing corresponding to the frequency spacing of the first range/relative range velocity matrix in the relative velocity direction; detecting objects in the second range/relative velocity matrix to produce a second detection vector; unfolding the second detection vector; and determining a true velocity of the detected objects based upon the unfolded first and second detection vectors.

公开(公告)号：US20160124086A1

公开(公告)日：2016-05-05

申请号：US14527840

申请日：2014-10-30

Applicant: NXP B.V.

Inventor： Feike Guus Jansen ,  Zoran Zivkovic

IPC: G01S13/64 ,  G01S13/93 ,  G01S7/292 ,  G01S13/58

CPC classification number: G01S13/931 ,  G01S7/2922 ,  G01S13/227 ,  G01S13/343 ,  G01S13/42 ,  G01S13/5246 ,  G01S13/582 ,  G01S13/584 ,  G01S2007/356 ,  G01S2013/9321

Abstract: Various exemplary embodiments relate to a method for determining the velocity of an object using radar system having a processor, including: receiving, by a processor, a first digital signal corresponding to a first transmit signal; receiving, by the processor, a second digital signal corresponding to a second transmit signal; processing the first digital signal to produce a first range/relative velocity matrix; detecting objects in the first range/relative velocity matrix to produce a first detection vector; unfolding the first detection vector; processing the second digital signal to produce a second range/relative velocity matrix; interpolating the second range/relative velocity matrix in the relative velocity direction wherein the interpolated second range/relative velocity matrix has a frequency spacing corresponding to the frequency spacing of the first range/relative range velocity matrix in the relative velocity direction; detecting objects in the second range/relative velocity matrix to produce a second detection vector; unfolding the second detection vector; and determining a true velocity of the detected objects based upon the unfolded first and second detection vectors.

Abstract translation: 各种示例性实施例涉及使用具有处理器的雷达系统来确定物体的速度的方法，包括：由处理器接收对应于第一发射信号的第一数字信号; 由处理器接收对应于第二发射信号的第二数字信号; 处理第一数字信号以产生第一范围/相对速度矩阵; 检测所述第一范围/相对速度矩阵中的对象以产生第一检测向量; 展开第一个检测向量; 处理所述第二数字信号以产生第二范围/相对速度矩阵; 内插相对速度方向上的第二范围/相对速度矩阵，其中内插的第二范围/相对速度矩阵具有与相对速度方向上的第一范围/相对范围速度矩阵的频率间隔相对应的频率间隔; 检测所述第二范围/相对速度矩阵中的对象以产生第二检测向量; 展开第二检测向量; 以及基于展开的第一和第二检测向量来确定检测到的对象的真实速度。