公开(公告)号：US20180017683A1

公开(公告)日：2018-01-18

申请号：US15648166

申请日：2017-07-12

Applicant: DENSO CORPORATION

Inventor： Kojiro TATEISHI ,  Naoki KAWASAKI ,  Shunsuke SUZUKI ,  Hiroshi MIZUNO ,  Kenji MUTO ,  Mikio SHIMIZU ,  Yusuke TANAKA

IPC: G01S19/48 ,  G01C21/00 ,  B60G17/019 ,  B60W40/06 ,  G05D1/02 ,  G01C21/36

CPC classification number: G01S19/48 ,  B60G17/01908 ,  B60W40/06 ,  G01C21/005 ,  G01C21/30 ,  G01C21/3602 ,  G01S17/023 ,  G01S17/936 ,  G05D1/0268

Abstract: In a location estimation device, a change detection unit detects a point of change in the width of a roadside structure as a width change point. A width correction unit calculates a width deviation between a first relative location of the roadside structure on a map data segment and a second relative location of the roadside structure obtained based on shape information of the roadside structure in the width direction of a vehicle. The width correction unit corrects, as a function of the width deviation and a positional accuracy of the vehicle in the travelling direction, an estimated location of the vehicle in the width direction when it is determined that there is the point of change in the width of the roadside structure in the travelling direction of the vehicle.