公开(公告)号：US20210293946A1

公开(公告)日：2021-09-23

申请号：US17202941

申请日：2021-03-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takaaki KISHIGAMI ,  Kenta IWASA

IPC: G01S13/28 ,  G01S13/931 ,  G01S7/02 ,  H04B7/0413 ,  G01S7/282 ,  G01S7/288

Abstract: 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.

公开(公告)号：US20190101617A1

公开(公告)日：2019-04-04

申请号：US16206462

申请日：2018-11-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takaaki KISHIGAMI ,  Tadashi MORITA

IPC: G01S7/02 ,  G01S7/292 ,  G01S7/36 ,  G01S13/93 ,  G01S13/02

Abstract: A radar device employs a configuration provided with: a receiver which, in operation, receives one or more radar transmission signals transmitted from another radar device, in an interference measurement segment in which transmission of a radar transmission signal from the radar device is stopped; A/D conversion circuitry which, in operation, converts the one or more radar transmission signals from the other radar device received by the receiver from one or more analog signals into one or more digital signals; and an interference detection circuitry which, in operation, performs a correlation calculation between each of one or more discrete samples that is the one or more digital signals and a prescribed coefficient sequence to detect one or more prescribed frequency components included in the one or more digital signals, as one or more interference signal components.