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公开(公告)号：EP4227705A1
公开(公告)日：2023-08-16
申请号：EP22155994.1
申请日：2022-02-09
申请人： NXP B.V.
摘要： A data processing device and method for detecting interference in FMCW radar signals, configured to use an adaptive thresholding technique to identify interference in a plurality of samples forming a beat signal, the adaptive thresholding including grouping the plurality of samples into a plurality of subsets, determining a maximum magnitude of each subset and extracting an nth lowest maximum magnitude of the plurality of subsets to determine an adaptive threshold, and applying the adaptive threshold to each sample to generate a mask.
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公开(公告)号：EP4133301A1
公开(公告)日：2023-02-15
申请号：EP20929942.9
申请日：2020-12-24
申请人： INTEL Corporation
发明人： MAOR, Lior , COHEN, Alon , TEPLITSKY, Moshe
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公开(公告)号：EP4102247A1
公开(公告)日：2022-12-14
申请号：EP22178761.7
申请日：2022-06-13
申请人： Wang, Beibei , Ozturk, Muhammed Zahid , Wu, Chenshu , Zeng, Xiaolu , Regani, Sai Deepika , Hu, Yuqian , Liu, K.J. Ray , Au, Oscar Chi-Lim , Han, Yi , Lai, Hung-Quoc Duc , Claffey, David N. , Chen, Chun-I , Bugos, Dan , Zan, Peng , Zhu, Guozhen
发明人： Wang, Beibei , Ozturk, Muhammed Zahid , Wu, Chenshu , Zeng, Xiaolu , Regani, Sai Deepika , Hu, Yuqian , Liu, K.J. Ray , Au, Oscar Chi-Lim , Han, Yi , Lai, Hung-Quoc Duc , Claffey, David N. , Chen, Chun-I , Bugos, Dan , Zan, Peng , Zhu, Guozhen
摘要： Methods, apparatus and systems for sound sensing and wireless sensing are described. In one example, a described system comprises: a sensor configured to obtain a baseband mixture signal in a venue; a transmitter configured to transmit a first radio signal through a wireless channel of the venue; a receiver configured to receive a second radio signal through the wireless channel; and a processor. The baseband mixture signal comprises a mixture of a first source signal and an additional signal. The first source signal is generated by a first motion of a first object in the venue. The second radio signal differs from the first radio signal due to the wireless channel and at least the first motion of the first object in the venue. The processor is configured for: obtaining a radio feature of the second radio signal, constructing a first adaptive filter for the baseband mixture signal based on the radio feature, filtering the baseband mixture signal using the first adaptive filter to obtain a first output signal, and generating an estimation of the first source signal based on the first output signal.
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87.发明公开
公开(公告)号：EP4050365A1
公开(公告)日：2022-08-31
申请号：EP22157351.2
申请日：2022-02-17
申请人： NXP USA, Inc.
摘要： A method and system are provided to resolve Doppler ambiguity and multiple-input, multiple-output array phase compensation issues present in Time Division Multiplexing MIMO radars (100) by estimating an unambiguous radial velocity measurement. Embodiments apply a disambiguation algorithm (180) that dealiases the Doppler spectrum to resolve the Doppler ambiguity of a range-Doppler detection. Phase compensation (180) is then applied for corrected reconstruction of the MIMO array measurements. The dealiasing processing first forms multiple hypotheses associated with the phase corrections for the radar transmitters based on a measured radial velocity of a range-Doppler cell being processed. A correct hypothesis, from the multiple hypotheses, is selected based on a least-spurious spectrum criterion. Using this approach, embodiments require only single-frame processing and can be applied to two or more transmitters (120) in a TDM MIMO radar system (100).
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公开(公告)号：EP4042195A1
公开(公告)日：2022-08-17
申请号：EP20797008.8
申请日：2020-10-07
申请人： Transrobotics, Inc.
发明人： ALALUSI, Sayf
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公开(公告)号：EP4036602A1
公开(公告)日：2022-08-03
申请号：EP21154386.3
申请日：2021-01-29
发明人： Leßmann, Stephanie , Iurgel, Uri , Doerr, Wolfgang
IPC分类号： G01S13/60 , G01S7/35 , G01S7/288 , G01S7/41 , G01S13/34 , G01S13/44 , G01S13/58 , G01S13/87 , G01S13/931
摘要： A method of determining ego-motion information of a vehicle comprising a radar sensor having a plurality of antenna elements, comprising: acquiring (S410) motion spectrum comprising a plurality of data elements, each calculated for a respective one of a plurality of Doppler bin indices and for a respective one of a plurality of spatial bin indices, each spatial bin index indicating a respective angle-of-arrival of a radar return signal at the radar sensor; and determining (S420) the ego-motion information by solving a motion equation system comprising equations of motion generated using the motion spectrum data and each relating a respective value indicating a radial velocity, a respective value indicating an angular displacement, and a variable indicating a velocity of the vehicle.
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公开(公告)号：EP4001955A1
公开(公告)日：2022-05-25
申请号：EP21208119.4
申请日：2021-11-15
申请人： Imec VZW
发明人： Bauduin, Marc , Bourdoux, Andre
摘要： A method of this disclosure comprises a step of generating (104) a radar signal in digital domain along at least one transmission path, the radar signal comprises a number of M periodic repetitions of a code sequence with a length Lc, multiplied with a progressive phase rotation
where Lc and M are integers, K is an integer or a non-integer, and n is a discrete time index corresponding to a code rate. The method further comprises a step of generating (105) a process input signal in digital domain along at least one receiving path from a digitized reflection signal corresponding to the radar signal by multiplying the digitized reflection signal with a progressive phase rotation
In this context, K is defined such that a ratio
is a non-integer, and M is defined such that a ratio
is an integer. Additionally or alternatively, K is defined such that a ratio
is a non-integer, and M is defined such that a ratio
is an integer, if the code sequence is a Zadoff code sequence.
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