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公开(公告)号：US11815586B2
公开(公告)日：2023-11-14
申请号：US18179255
申请日：2023-03-06
发明人： Kenta Iwasa , Hidekuni Yomo
IPC分类号： G01S13/00 , G01S7/03 , G01S7/282 , G01S7/285 , G01S13/42 , H01Q1/32 , H01Q21/06 , H01Q21/29 , G01S13/87 , H01Q3/26 , G01S13/931
CPC分类号： G01S13/003 , G01S7/03 , G01S7/032 , G01S7/282 , G01S7/285 , G01S13/42 , G01S13/878 , H01Q1/3233 , H01Q3/2605 , H01Q21/061 , H01Q21/293 , G01S13/931
摘要： One of a transmitting array antenna and a receiving array antenna includes a first antenna group and a second antenna group. The first antenna group includes one or more first antenna elements of which the phase centers of the antenna elements are laid out at each first layout spacing following a first axis direction, and a shared antenna element. The second antenna group includes a plurality of second antenna elements and the one shared antenna element, and the phase centers of the antenna elements are laid out in two columns at each second layout spacing following a second axis direction that is different from the first axis direction. The phase centers of the antenna elements included in each of the two columns differ from each other regarding position in the second axis direction.
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公开(公告)号：US11209518B2
公开(公告)日：2021-12-28
申请号：US16299725
申请日：2019-03-12
发明人： Kenta Iwasa , Hidekuni Yomo , Ryosuke Shiozaki
IPC分类号： G01S7/03 , G01S7/28 , H01Q3/34 , G01S13/87 , G01S13/931
摘要： A radar device includes a radar transmitting circuit that transmits radar signals from a transmission array antenna, and a radar receiving circuit that receives returning wave signals, where the radar signals have been reflected at a target, from a receiving array antenna. One of the transmitting array antenna and the receiving array antenna includes multiple first antennas of which phase centers are laid out along a first axis direction. The other of the transmitting array antenna and the receiving array antenna includes multiple second antennas of which phase centers are laid out at a second spacing along a second axis direction that is different from the first axis direction. The multiple first antennas include multiple antennas of which the phase centers are laid out at a first spacing, and multiple antennas of which the phase centers are laid out at a third spacing that is different from the first spacing.
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公开(公告)号：US11940548B2
公开(公告)日：2024-03-26
申请号：US17337105
申请日：2021-06-02
发明人： Yohei Morishita , Junji Sato , Naganori Shirakata , Hidekuni Yomo , Kenta Iwasa , Kazuma Nishiyasu , Mei Okamoto
CPC分类号： G01S5/0295 , G01S5/02521 , G01S5/0278 , G01S11/02 , H04W4/029
摘要： Provided is an improved estimation and identification device that estimates the position of a plurality of identification targets and identifies the plurality of identification targets. The estimation and identification device has a configuration comprising: a plurality of tracking devices that emit electromagnetic waves or sound waves and detect the position of an identification target on the basis of reflected electromagnetic waves or sound waves from the identification target holding a wireless transmission terminal; a plurality of wireless communications devices that wirelessly communicate with wireless communications terminals and receive identification information for the wireless communications terminals from the wireless communications terminals; and an analysis circuit that identifies the identification target and estimates the position of the identification target, on the basis of the results of the wireless communications results, the detected position of the identification target, and the identification information.
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公开(公告)号：US11619706B2
公开(公告)日：2023-04-04
申请号：US17530188
申请日：2021-11-18
发明人： Kenta Iwasa , Hidekuni Yomo , Ryosuke Shiozaki
IPC分类号： G01S7/03 , G01S7/28 , H01Q3/34 , G01S13/87 , G01S13/931
摘要： A radar device includes a radar transmitting circuit that transmits radar signals from a transmission array antenna, and a radar receiving circuit that receives returning wave signals, where the radar signals have been reflected at a target, from a receiving array antenna. One of the transmitting array antenna and the receiving array antenna includes multiple first antennas of which phase centers are laid out along a first axis direction. The other of the transmitting array antenna and the receiving array antenna includes multiple second antennas of which phase centers are laid out at a second spacing along a second axis direction that is different from the first axis direction. The multiple first antennas include multiple antennas of which the phase centers are laid out at a first spacing, and multiple antennas of which the phase centers are laid out at a third spacing that is different from the first spacing.
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公开(公告)号：US12078745B2
公开(公告)日：2024-09-03
申请号：US17439682
申请日：2020-02-14
发明人： Takaaki Kishigami , Kenta Iwasa , Hidekuni Yomo
IPC分类号： G01S7/00 , G01S7/03 , G01S13/44 , H01Q21/06 , H04B7/0413
CPC分类号： G01S7/032 , G01S13/4463 , H01Q21/065 , H04B7/0413
摘要： Each of the plurality of transmission antenna groups includes a plurality of transmission antennas that are disposed at second intervals in a first direction, and are disposed at fourth intervals each of which is an interval of an integral multiple of a third interval in a second direction. Each of the plurality of reception antenna groups includes a plurality of reception antennas that are disposed at fifth intervals in the first direction, and are disposed at sixth intervals each of which is an interval of an integral multiple of the third interval in the second direction. The difference between the second interval and the fifth interval is the first interval, and the difference between the fourth interval and the sixth interval is the third interval.
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公开(公告)号：US12066569B2
公开(公告)日：2024-08-20
申请号：US17887053
申请日：2022-08-12
发明人： Kenta Iwasa , Hidekuni Yomo
CPC分类号： G01S7/4026 , G01S7/2813 , G01S7/4008 , G01S13/0218 , G01S7/4013 , G01S2013/0245
摘要： A radar apparatus includes a radar transmission circuit that transmits a radar signal from a transmission array antenna, and a radar reception circuit that receives, from a reception array antenna, a reflected wave signal that is the radar signal reflected at a target. One of the transmission array antenna and the reception array antenna includes a first antenna element group having m antenna elements arranged at a first interval Dt along a first axis direction, wherein m is an integer of 2 or larger. The other one of the transmission array antenna and the reception array antenna includes a second antenna element group having n antenna elements arranged at a second interval Dr along the first axis direction, wherein n is an integer of 4 or larger. The second interval Dr includes several different intervals.
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公开(公告)号：US11486994B2
公开(公告)日：2022-11-01
申请号：US16584341
申请日：2019-09-26
摘要： A radar apparatus includes a plurality of transmission antennae and a radar transmitter that transmits transmission signals by using the plurality of transmission antennae. In a virtual reception array including a plurality of virtual antennae formed of a plurality of reception antennae and the plurality of transmission antennae, disposition positions of at least two of the virtual antennae are the same as each other, and, transmission intervals of the transmission signals that are sequentially transmitted from transmission antennae corresponding to the at least two virtual antennae among the plurality of transmission antennae are an equal interval.
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公开(公告)号：US11940524B2
公开(公告)日：2024-03-26
申请号：US17952824
申请日：2022-09-26
CPC分类号： G01S13/343 , G01S7/4026 , G01S7/403 , G01S7/4034 , G01S2013/0245
摘要： A radar device includes radar transmission and receiving circuits. The radar transmission circuit transmits one or more transmission signals, each having a transmission period Tr. The radar receiving circuit receives one or more reflected signals in which the transmission signals are reflected by an object and estimates a direction of the object based on the reflected signals. The radar transmission circuit includes Nt transmission antennas. A control circuit sets a transmission gap period between a first and second periods, with the transmission gap period being a period during which the transmission signals are not transmitted. The first period is equal to an integral multiple of a period Np, the period Np is equal to or more than Nt times the transmission period Tr, and the second period is set after the first period and is equal to an integral multiple of the period Np.
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公开(公告)号：US11933875B2
公开(公告)日：2024-03-19
申请号：US17202941
申请日：2021-03-16
发明人： Takaaki Kishigami , Kenta Iwasa
IPC分类号： G01S13/28 , G01S7/02 , G01S7/282 , G01S7/288 , G01S13/931 , H04B7/0413
CPC分类号： G01S13/288 , G01S7/0234 , G01S7/282 , G01S7/2883 , G01S13/282 , G01S13/931 , H04B7/0413
摘要： The target detection accuracy of a radar apparatus is improved. The radar apparatus includes transmission circuitry, which, in operation, transmits a transmission signal using a plurality of transmit antennas, and reception circuitry, which, in operation, receives using a plurality of receive antennas a reflected wave signal that is the transmission signal reflected by an object, in which the plurality of transmit antennas include at least one first transmit antenna and a plurality of second transmit antennas, and, in a first direction, an absolute value of a difference between, on one hand, a spacing between the at least one first transmit antenna and a phase center of those of the plurality of second transmit antennas which are used for beam synthesis, and, on another hand, a spacing between adjacent receive antennas of the plurality of receive antennas is a defined value based on a wavelength of the plurality of transmission signals.
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公开(公告)号：US11885905B2
公开(公告)日：2024-01-30
申请号：US17479374
申请日：2021-09-20
发明人： Kenta Iwasa , Hidekuni Yomo , Tomohiro Yui
CPC分类号： G01S7/2921 , G01S7/288 , G01S13/288
摘要： Provided is a radar apparatus including: an estimation circuit; and a processing circuit. The estimation circuit outputs a plurality of pieces of data each including information in which a distance to a target and a direction to the target are estimated based on a reception signal including a reflected wave that is a radar signal reflected by the target. The processing circuit determines a range side lobe component in the target based on the estimated distance and the estimated direction of one or more pieces of data selected from the plurality of pieces of data.
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