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公开(公告)号：US20230092131A1
公开(公告)日：2023-03-23
申请号：US18071333
申请日：2022-11-29
发明人： Dapeng Lao , Jinnan Liu , Rongjiang Liu , Chen Yang , Jintai Zhu , Dejian Li
摘要： A radar signal transmitting method, a radar signal receiving method, and an apparatus are applied to a radar apparatus. The radar signal transmitting method includes: sending a first signal and a second signal in S slots, where a phase of the first signal remains unchanged in the S slots, and the first signal may be equivalent to a SIMO signal; and sending the second signal in at least one of a time division manner or a code division manner, where phase modulation is performed, by using a step of 2πky/P, on a signal that is in the second signal and that is sent through each of m transmit antennas, and the second signal is equivalent to a MIMO signal. When P=2, the MIMO signal is sent in a time division manner. When P>2, the MIMO signal is sent in a time division manner and a code division manner.
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2.发明申请公开(公告)号：US20220171021A1
公开(公告)日：2022-06-02
申请号：US17675258
申请日：2022-02-18
发明人： Jinnan Liu , Mu Zhou , Dapeng Lao
摘要： A signal transmission method and apparatus, a signal processing method and apparatus, and a radar system are provided. The signal transmission method is applied to a multiple input multiple output MIMO radar, the MIMO radar includes a transmitter, and the transmitter includes a plurality of transmit antennas. The signal transmission method includes: sending, by the transmitter, a first burst in a first measurement frame, where the first measurement frame is used to measure a velocity of a target, and when the first burst is sent, each of the plurality of transmit antennas sends a chirp signal in a time division manner; and sending, by the transmitter, a second burst in the first measurement frame after the transmitter sends the first burst in the first measurement frame, where when the second burst is sent, a quantity of transmit antennas configured to send a chirp signal is one.
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公开(公告)号：US20230170622A1
公开(公告)日：2023-06-01
申请号：US18160181
申请日：2023-01-26
发明人： Zhidong Zhao , Qiang Li , Dapeng Lao , Yong Yang
CPC分类号： H01Q13/206 , H01Q9/0407
摘要： This application provides a gap waveguide antenna structure and an electronic device, and relates to the field of communication radars. The antenna structure includes a top layer, a gap waveguide structure, a microstrip structure, and a bottom layer. The top layer is parallel to the bottom layer. A first metal layer and a second metal layer are laid on two sides of a dielectric layer of the top layer, and the microstrip structure is disposed on the second metal layer. A frame of the microstrip structure is separated from metal of the second metal layer by leaving a space. The foregoing special antenna structure can reduce a transmission loss, improve a coupling capability, and effectively improve transmission efficiency of energy or an electromagnetic wave.
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公开(公告)号：US20220146623A1
公开(公告)日：2022-05-12
申请号：US17581176
申请日：2022-01-21
发明人： Dapeng Lao , Jinnan Liu , Ben Wang , Mu Zhou
IPC分类号： G01S7/03 , G01S13/06 , G01S13/931
摘要： A radar system (400) and a vehicle are provided, so that when high angular resolution is obtained, a quantity of transmit antennas and a quantity of receive antennas are reduced, to reduce design and processing difficulty. The radar system (400) includes: a transmitter (401), configured to transmit a radar signal; and a receiver (402), configured to receive an echo signal obtained after the radar signal is reflected by a target, where a transmit antenna array of the transmitter (401) and a receive antenna array of the receiver (402) are used to form a virtual linear array and a virtual planar array, the virtual linear array includes a uniform linear array in a first direction, the virtual planar array includes a uniform planar array, and a first spacing between two adjacent array elements in the uniform linear array is less than a second spacing between two adjacent array elements in the first direction in the uniform planar array.
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公开(公告)号：US20240219516A1
公开(公告)日：2024-07-04
申请号：US18069577
申请日：2022-12-21
发明人： Dejian LI , Dapeng Lao , Chen Yang , Ben Wang , Jintai Zhu
IPC分类号： G01S7/35 , G01S13/536 , G01S13/56
CPC分类号： G01S7/354 , G01S7/356 , G01S13/536 , G01S13/56 , G01S13/931
摘要： A target detection method and apparatus, a radar, and a vehicle are provided, and relate to the field of radar technologies. The method includes: obtaining a signal spectrum based on a received signal of a receive antenna of the radar; reconstructing a received signal corresponding to a target that is in the signal spectrum and that is greater than or equal to a signal strength threshold; eliminating a reconstructed received signal in the signal spectrum to obtain an updated signal spectrum, where the updated signal spectrum represents a signal spectrum that does not include the target; determining, in the updated signal spectrum, a parameter of a target that is greater than or equal to the signal strength threshold; and obtaining at least one of location information or speed information of the determined target based on the determined parameter of the target.
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公开(公告)号：US20230184886A1
公开(公告)日：2023-06-15
申请号：US18164398
申请日：2023-02-03
发明人： Jintai Zhu , Dapeng Lao , Dejian Li , Jinnan Liu , Ben Wang
CPC分类号： G01S7/356 , G01S13/584
摘要： This disclosure provides a signal processing method and apparatus. The method includes: obtaining Nr1×M1 signals, where the Nr1×M1 signals are echo signals of M1 signals that are sent by a radar to a target in a SIMO mode; obtaining Nt×Nr2×M2 signals, where the Nt×Nr2×M2 signals are echo signals of M2 signals that are sent by the radar to the target in a MIMO mode; performing first signal processing on the Nr1×M1 signals to obtain first processing data, where the first signal processing includes sequentially performing range FFT analysis, linear prediction, and Doppler FFT analysis; performing second signal processing on the Nt×Nr2×M2 signals to obtain second processing data, where the second signal processing includes range FFT analysis and Doppler FFT analysis; and performing velocity matching ambiguity resolution processing based on the first processing data and the second processing data.
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公开(公告)号：US20220214442A1
公开(公告)日：2022-07-07
申请号：US17703081
申请日：2022-03-24
发明人： Ben Wang , Dejian Li , Jintai Zhu , Dapeng Lao
IPC分类号： G01S13/58 , H04B1/69 , H04B7/0413 , G01S13/92
摘要： A velocity measurement signal transmission and receiving method for an intelligent driving system includes generating a plurality of chirp signals for measuring moving velocities of one or more moving targets (301); and transmitting the plurality of chirp signals in a time-division multiplexing (TDM) repetition cycle by using M antennas (302), where the TDM repetition cycle includes one single-antenna transmit mode sub-cycle and L consecutive multi-antenna transmit mode sub-cycles.
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