公开(公告)号：US20240192302A1

公开(公告)日：2024-06-13

申请号：US18584871

申请日：2024-02-22

Applicant: DENSO CORPORATION

Inventor： Yasuhiro KURONO ,  Takuya TAKAYAMA ,  Yutaka HASEGAWA

IPC: G01S3/48 ,  G01S7/40 ,  G01S13/931 ,  H04B7/0413

CPC classification number: G01S3/48 ,  G01S7/403 ,  H04B7/0413 ,  G01S13/931

Abstract: A radar system of one aspect of the present disclosure includes a plurality of transmitting antennas, a plurality of receiving antennas, an azimuth estimation unit, a restoration unit (S30), an error calculation unit, and a false azimuth determination unit. The azimuth estimation unit estimates an azimuth of a target based on a first received signal received by a virtual array. The restoration unit calculates a second received signal from an estimated power of the first received signal which corresponds to a signal restored from the first received signal, assuming that the transmitting azimuth is the same as an arrival azimuth. The false azimuth determination unit determines that the estimated azimuth is a false azimuth when the errors between the first received signal and the second received signal are larger than a determination threshold.

公开(公告)号：US20240201323A1

公开(公告)日：2024-06-20

申请号：US18590672

申请日：2024-02-28

Applicant: DENSO CORPORATION

Inventor： Yasuhiro KURONO ,  Yutaka HASEGAWA ,  Takuya TAKAYAMA

IPC: G01S7/35 ,  G01S13/42 ,  G01S13/58 ,  G01S13/931

CPC classification number: G01S7/354 ,  G01S13/42 ,  G01S13/584 ,  G01S13/931

Abstract: A vehicle radar apparatus detects a position and a velocity of a target object. The radar apparatus selects, as a relay reflection target object, a moving body capable of relaying transmission and reception of the radar wave to and from another target object, from target objects detected. The radar apparatus sets a multipath ghost condition indicating the position and the velocity of the target object erroneously detected as a result of a stationary object to which the radar wave is relayed by the relay reflection target object, based on the position and the velocity of the relay reflection target object and the velocity of an own vehicle. The radar apparatus extracts a target object that meets the multipath ghost condition from the detected target objects, determines that the extracted target object is a multipath ghost, and restricts output of a detection result from the radar apparatus to an external apparatus.

公开(公告)号：US20240168150A1

公开(公告)日：2024-05-23

申请号：US18425814

申请日：2024-01-29

Applicant: DENSO CORPORATION

Inventor： Yasuhiro KURONO ,  Takuya TAKAYAMA

IPC: G01S13/58 ,  G01S7/35 ,  G01S13/56 ,  G01S13/931 ,  G01S13/95

CPC classification number: G01S13/584 ,  G01S7/356 ,  G01S13/56 ,  G01S13/931 ,  G01S13/95

Abstract: A radar device for a vehicle includes a frequency analysis unit, a peak information acquisition unit, and a rainfall determination unit. The frequency analysis unit performs a two-dimensional fast Fourier transform on a beat signal, and the peak information acquisition unit extracts, from peaks of a power spectrum calculated by the two-dimensional fast Fourier transform, peaks within a predefined distance-velocity region preset as a raindrop condition, and acquire peak information. The rainfall determination unit determines whether a surrounding environment of the vehicle has rainfall, based on the peak information acquired by the peak information acquisition unit.

公开(公告)号：US20240264297A1

公开(公告)日：2024-08-08

申请号：US18584868

申请日：2024-02-22

Applicant: DENSO CORPORATION

Inventor： Yasuhiro KURONO ,  Takuya TAKAYAMA ,  Yutaka HASEGAWA ,  Masatada HOKIGUCHI

IPC: G01S13/42 ,  G01S13/86 ,  G01S13/931

CPC classification number: G01S13/42 ,  G01S13/867 ,  G01S13/931

Abstract: A radar device according to one aspect of the present disclosure includes a plurality of transmitting antennas, a plurality of receiving antennas, a first azimuth estimation unit, a second azimuth estimation unit, and a selection unit. The first azimuth estimation unit estimates a first azimuth by coherently processing first received signals received by a virtual array. The second azimuth estimation unit estimates a second azimuth by, between transmissions or receptions, coherently processing second received signals received by an antenna array. The selection unit adopts the first azimuth or the second azimuth depending on the ambient environment and/or the detected situation of the target.