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公开(公告)号：EP3627787A1
公开(公告)日：2020-03-25
申请号：EP18196127.7
申请日：2018-09-22
申请人： IMEC VZW
发明人： Bourdoux, Andre , Bauduin, Marc , Desset, Claude
摘要： Example embodiments describe an orthogonal frequency-division multiplexing, OFDM, based radar signal (101, 107, 127) comprising Q sub-carriers (210-212, 230-232) adapted to push an IQ-imbalance component out of a subset (240) of L contiguous range bins (241) of range profiles (137) derived out of the received (127) radar signal; and wherein L is at most Q/2.
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公开(公告)号：EP4001954A1
公开(公告)日：2022-05-25
申请号：EP20208013.1
申请日：2020-11-17
申请人： Imec VZW
发明人： Bauduin, Marc , Bourdoux, Andre
摘要： A method is provided for facilitating radar detection robust to IQ imbalance. The method comprises the step of generating (104) a radar signal in digital domain comprising a number of M periodic repetitions of a code sequence with a length Lc, multiplied with a progressive phase rotation e j . π K . n , where Lc and M are integers, K is an integer or a non-integer, and n is a discrete integer variable. The method further comprises the step of generating (105) a process input signal in digital domain from a reflection signal corresponding to the radar signal by multiplying the reflection signal with a progressive phase rotation e − j . π K . n . In this context, K is defined such that a ratio Lc K is a non-integer, and M is defined such that a ratio Lc . M K is an integer.
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公开(公告)号：EP4455726A1
公开(公告)日：2024-10-30
申请号：EP23170612.8
申请日：2023-04-28
申请人： Imec VZW
发明人： Bourdoux, Andre , Bauduin, Marc
摘要： A radar signal for transmitting by a radar transmitter, wherein the radar signal is modulated by a modulation signal comprising at least two repetitions of a sequence element, wherein the sequence element comprises at least two repetitions of at least two sequences of a same length, such that the modulation signal is periodic; wherein the at least two sequences are correlated such that a sum of correlation of the at least two sequences is less than - 60 dB , preferably less than - 70 dB, most preferably less than - 80 dB.
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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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