公开(公告)号：US20220373334A1

公开(公告)日：2022-11-24

申请号：US17367265

申请日：2021-07-02

Applicant: Aptiv Technologies Limited

Inventor： Matthew R. Smith ,  Tanto Sugiarto

IPC: G01C21/20 ,  G05D1/02

Abstract: Methods and systems are described that enable world geodetic system (WGS) to cartesian coordinate conversion for driving. A path of a vehicle comprising lane-group segments (LGSs) is received. The LGSs comprise respective origins in WGS coordinates, respective path points in WGS coordinates; and respective groups of constants. For a first of the LGSs, global cartesian path coordinates are calculated, based on modified Bowring techniques, for the path points of the first LGS. The coordinates are calculated using the constants of the first LGS and respective differences between the path points of the first LGS and an origin of the first LGS. The vehicle can navigate along the path using the global cartesian path coordinates calculated for the first LGS. By using modified Bowring techniques and pre-calculated constants for each LGS of the path, accuracy can be maintained over long distances and across boundaries without requiring substantial computational overhead.

公开(公告)号：US10935977B2

公开(公告)日：2021-03-02

申请号：US16025138

申请日：2018-07-02

Applicant: Aptiv Technologies Limited

Inventor： Premchand Krishna Prasad ,  Tanto Sugiarto ,  Matthew R. Smith

IPC: G05D1/00 ,  B60W50/00 ,  G05D1/02 ,  B60W30/18

Abstract: A lane assignment system includes a digital-map, a ranging-sensor, and one or more controller-circuits. The digital-map indicates a position of a host-vehicle traveling in a travel-lane on a roadway. The ranging sensor detects a lateral-distance to an other-vehicle traveling on the roadway proximate the host-vehicle. The one or more controller-circuits are in communication with the digital-map and the ranging-sensor. The one or more controller-circuits determine a lateral-variation of the lateral-distance, determine whether the lateral-variation is greater than a dynamic-threshold, determine whether a second-lane exists beyond a first-lane based on the digital-map, determine that the other-vehicle is traveling in the first-lane, and operate the host-vehicle in accordance with the other-vehicle traveling in the first-lane.