公开(公告)号：US20230152447A1

公开(公告)日：2023-05-18

申请号：US18156288

申请日：2023-01-18

申请人： DENSO CORPORATION

发明人： Yasuhiro SUZUKI

IPC分类号： G01S13/931 ,  G01S7/40 ,  G01S7/41

CPC分类号： G01S13/931 ,  G01S7/40 ,  G01S7/41

摘要： In a distance detection apparatus for a vehicle, a distance detection unit is configured to detect object distances to an object around the vehicle by transmitting and receiving radar waves. A detection distance estimation unit is configured to estimate an estimated detection distance having a maximum value of the object distance, based on the object distances and intensities of the radar waves reflected by the object. A lost-track distance estimation unit is configured to estimate, as a lost-track distance, the object distance at a timing of transition from a detected state where the object is recognized to a non-detected state where the object is not recognized, based on a result of detection by the distance detection unit. A performance determination unit is configured to determine a degradation of detection performance of the distance detection unit based on the estimated detection distance and the lost-track distance.

公开(公告)号：US20240094341A1

公开(公告)日：2024-03-21

申请号：US18518244

申请日：2023-11-22

申请人： DENSO CORPORATION

发明人： Yasuhiro SUZUKI

IPC分类号： G01S7/40 ,  G01S13/931

CPC分类号： G01S7/4008 ,  G01S7/4021 ,  G01S13/931 ,  G01S2013/9329

摘要： In a misalignment calculation apparatus, a reflector information retrieving unit retrieves, based on a measurement result of a radar device installed in an own vehicle, a positional information item on a reflector of each of preceding vehicles that is traveling in front of the own vehicle relative, the positional information on the reflector representing a position of the reflector. A misalignment-quantity calculator calculates a misalignment quantity of the radar device using maximum likelihood estimation in accordance with:



a likelihood model that includes a predetermined correlation representing a reflector existence likelihood at each specified position relative to the radar device; and
the retrieved positional information item on the reflector of each of the preceding vehicles relative to the radar device.

公开(公告)号：US20230003877A1

公开(公告)日：2023-01-05

申请号：US17930671

申请日：2022-09-08

申请人： DENSO CORPORATION

发明人： Yasuhiro SUZUKI

IPC分类号： G01S13/931 ,  G01S13/68

摘要： An axis deviation detection device detects a deviation of a central axis of an in-vehicle measurement device that executes measurement using radar waves. The axis deviation detection device performs correction of data that are obtained by the measurement device, to generate first data. Furthermore, the axis deviation detection device generates second data, based on behavior of the vehicle as measured by a sensor unit. The axis deviation detection device then detects the deviation of the central axis, from the first and second data.

公开(公告)号：US20240094365A1

公开(公告)日：2024-03-21

申请号：US18518249

申请日：2023-11-22

申请人： DENSO CORPORATION

发明人： Yasuhiro SUZUKI

IPC分类号： G01S7/497 ,  G01S17/931

CPC分类号： G01S7/497 ,  G01S17/931 ,  G01S2007/4975

摘要： A contamination detection apparatus acquires distance-measurement point information from a laser radar apparatus that generates the distance-measurement point information that indicates a distance-measurement point distance to a distance measurement point and light reception intensity of detected laser light. The contamination detection apparatus acquires scattered light information that indicates scattered light intensity of scattered light from a scattered light sensor that detects scattered light generated by the laser light scattering inside the casing as a result of emission of the laser light by the laser radar apparatus. The contamination detection apparatus executes contamination detection that detects contamination of the optical window based on the scattered light intensity indicated by the scattered light information. The contamination detection apparatus prohibits execution of the contamination detection when the light reception intensity is equal to or greater than an intensity threshold set based on the distance-measurement point distance corresponding to the light reception intensity.