公开(公告)号：US20240125616A1

公开(公告)日：2024-04-18

申请号：US18045306

申请日：2022-10-10

Applicant: GM Global Technology Operations LLC

Inventor： Bo Yu ,  Joon Hwang ,  Carl P. Darukhanavala ,  Shu Chen ,  Vivek Vijaya Kumar ,  Donald K. Grimm ,  Fan Bai

IPC: G01C21/00

CPC classification number: G01C21/3819 ,  G01C21/387 ,  G01C21/3889

Abstract: A method of correcting a GPS vehicle trajectory of a vehicle on a roadway for a high-definition map is provided. The method comprises receiving first bitmap data from a first sensor of a first vehicle to create a plurality of first multi-layer bitmaps for the first vehicle using the first bitmap data and receiving second bitmap data from a plurality of second sensors of a plurality of second vehicles to create a plurality of second multi-layer bitmaps. The method further comprises creating first probability density bitmaps and an overall probability density bitmap with a probability density estimation, and matching an image template from each of the first probability density bitmaps with the overall probability density bitmap to define match results. The method further comprises combining the match results to define combined utility values and determining the maximal utility value with the combined utility values.

公开(公告)号：US20220203984A1

公开(公告)日：2022-06-30

申请号：US17136580

申请日：2020-12-29

Applicant: GM Global Technology Operations LLC

Inventor： Vivek Vijaya Kumar ,  Kausalya Singuru ,  Kevin A. O'Dea ,  Carl P. Darukhanavala

IPC: B60W30/16 ,  B60W60/00

Abstract: A method includes obtaining information about a lead vehicle. The lead vehicle is traveling directly ahead of the host vehicle and the information includes velocity of the lead vehicle and a gap g between the host vehicle and the lead vehicle. Based on detecting a change in the velocity of the lead vehicle in the information, a corresponding desired acceleration is computed for the host vehicle using perceived acceleration of the lead vehicle to maintain the gap g within a specified range of gap values. The perceived acceleration of the lead vehicle is based on the change in the velocity indicated by the information. Based on a check of parameters involved in the computing the corresponding desired acceleration, a modified desired acceleration is computed for the host vehicle using a lag for the lead vehicle that results in an intended acceleration of the lead vehicle differing from the perceived acceleration.