公开(公告)号：US11428805B2

公开(公告)日：2022-08-30

申请号：US16898856

申请日：2020-06-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takaaki Kishigami ,  Kenta Iwasa ,  Hidekuni Yomo

IPC: G01S13/93 ,  G01S7/03 ,  G01S13/53 ,  G01S7/02 ,  G01S13/931 ,  G01S13/534

Abstract: Radar transmitter includes a plurality of transmit antennas that transmit a plurality of transmission signals using a multiplexing transmission, and a transmission circuit. The transmission circuit applies phase rotation amounts corresponding to combinations of Doppler shift amounts and code sequences to the plurality of transmission signals. Each of the combinations of the Doppler shift amounts and the code sequences has at least one different from other combination. The number of multiplexes of the code sequence corresponding to at least one of the Doppler shift amounts in the combinations is different from the number of multiplexing of code sequences corresponding to the remaining Doppler shift amounts.

公开(公告)号：US10965038B2

公开(公告)日：2021-03-30

申请号：US16154034

申请日：2018-10-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takaaki Kishigami

IPC: H01Q21/00 ,  H01Q21/06 ,  G01S7/03 ,  G01S13/28 ,  G01S13/42

Abstract: A transmitting array antenna includes a second antenna group placed in a position inside a first antenna group in a first direction and a position different from the first antenna group in a second direction. A receiving array antenna includes a fourth antenna placed in a position outside a third antenna group arranged in the first direction and a position different from the third antenna group in the second direction. An interelement spacing between a receiving antenna of the third antenna group located at an end on a second side is identical to an interelement spacing in the first direction between a transmitting antenna of the first antenna group on the first side and each of the second antenna group. In a case where the first antenna group and the third antenna group are identical in position in the second direction, positions of antennas are different.

公开(公告)号：US09921305B2

公开(公告)日：2018-03-20

申请号：US14754257

申请日：2015-06-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yunyun Cao ,  Hirofumi Nishimura ,  Asako Hamada ,  Takaaki Kishigami

IPC: G01S13/42 ,  G01S7/292 ,  G01S7/40 ,  G01S13/28 ,  G01S13/522 ,  G01S13/58 ,  G01S13/72 ,  G01S13/93 ,  G01S7/282 ,  G01S7/285 ,  G01S13/02

CPC classification number: G01S13/42 ,  G01S7/282 ,  G01S7/285 ,  G01S7/2927 ,  G01S7/4026 ,  G01S13/28 ,  G01S13/284 ,  G01S13/522 ,  G01S13/584 ,  G01S13/726 ,  G01S13/931 ,  G01S2013/0245

Abstract: A radar apparatus includes an antenna that receives echo signals, each of the echo signals being a radar signal reflected by one or more objects; a Doppler-frequency acquirer that acquires Doppler frequencies at each range bin from the received echo signals; a direction correlation power-value calculator that calculates direction correlation power values for respective combinations of the Doppler frequencies and at least one of a distance to the one or more objects and an arrival direction of the echo signals, each direction correlation power value indicating a strength of a corresponding echo signal; and a normalized direction correlation-value calculator that calculates, for the respective combinations, normalized direction correlation values, each normalized direction correlation value indicating a probability of the arrival direction of the corresponding echo signal.