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公开(公告)号：US11525908B2
公开(公告)日：2022-12-13
申请号：US16790319
申请日：2020-02-13
Applicant: NXP B.V.
Inventor： Francesco Laghezza , Feike Guus Jansen
IPC: G01S13/58 , G01S13/34 , G01S7/35 , G01S7/41 , G01S13/536
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.
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公开(公告)号：US11460567B2
公开(公告)日：2022-10-04
申请号：US16888139
申请日：2020-05-29
Applicant: NXP B.V.
Inventor： Navid Amani , Alessio Filippi , Feike Guus Jansen
Abstract: Aspects of the present disclosure are directed to radar signaling utilizing a non-uniform multi input/multi output (MIMO) antenna array including first and second uniform MIMO antenna arrays respectively having both sparsely-arranged transmitting antennas and sparsely-arranged receiving antennas. Communication circuitry is configured to determine a direction of arrival of reflections of radar signals transmitted by the transmitting antennas and received by the receiving antennas, by comparing the reflections received by the first MIMO array with the reflections received by the second MIMO array during a common time period (e.g., at the same time). Using this approach, the antenna arrays may be utilized to provide co-prime spacing/elements and to suppress ambiguities in received reflections based on alignment thereof.
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13.发明申请公开(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.
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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.
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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.
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Patent Agency Ranking
公开(公告)号：US12019141B2
公开(公告)日：2024-06-25
申请号：US17451515
申请日：2021-10-20
Applicant: NXP B.V.
IPC: G01S13/532 , G01S7/288 , G01S7/40 , G01S13/58 , G01S13/87 , G01S13/931
CPC classification number: G01S13/532 , G01S7/2883 , G01S7/40 , G01S13/584 , G01S7/4004 , G01S13/878 , G01S2013/93271
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.
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公开(公告)号：US11815589B2
公开(公告)日：2023-11-14
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 , G01S13/931 , H04B1/00 , H04B1/18 , H04B1/38
CPC classification number: G01S13/34 , G01S13/931 , H04B1/0064 , H04B1/18 , H04B1/38 , G01S2013/93271 , G01S2013/93275
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.
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公开(公告)号：US11709225B2
公开(公告)日：2023-07-25
申请号：US16906655
申请日：2020-06-19
Applicant: NXP B.V.
Inventor： Marco Jan Gerrit Bekooij , Feike Guus Jansen
CPC classification number: G01S7/354 , G01S7/4056 , G01S13/723 , G01S13/9047 , G01S7/356
Abstract: Exemplary aspects are directed to or involve a radar transceiver to transmit signal and receive reflected radar signals via a communication channel. The exemplary method includes radar receiver data processing circuitry that may be used to differentiate a subset of representations of the received signals. This differentiation may be used to select signals that are more indicative of target(s) having a given range than other ones of the received signals. The received signal's representations may then be compressed by using variable-mantissa floating-point numbers having mantissa values that vary based, at least in part, on at least one strength characteristic of the respective representations.
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公开(公告)号：US20210373144A1
公开(公告)日：2021-12-02
申请号：US16888139
申请日：2020-05-29
Applicant: NXP B.V.
Inventor： Navid Amani , Alessio Filippi , Feike Guus Jansen
Abstract: Aspects of the present disclosure are directed to radar signaling utilizing a non-uniform multi input/multi output (MIMO) antenna array including first and second uniform MIMO antenna arrays respectively having both sparsely-arranged transmitting antennas and sparsely-arranged receiving antennas. Communication circuitry is configured to determine a direction of arrival of reflections of radar signals transmitted by the transmitting antennas and received by the receiving antennas, by comparing the reflections received by the first MIMO array with the reflections received by the second MIMO array during a common time period (e.g., at the same time). Using this approach, the antenna arrays may be utilized to provide co-prime spacing/elements and to suppress ambiguities in received reflections based on alignment thereof.
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公开(公告)号：US20200256948A1
公开(公告)日：2020-08-13
申请号：US16272083
申请日：2019-02-11
Applicant: NXP B.V.
Inventor： Feike Guus Jansen , Francesco Laghezza , Franz Lampel
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.
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