公开(公告)号：US20230087328A1

公开(公告)日：2023-03-23

申请号：US17944570

申请日：2022-09-14

Applicant: APTIV TECHNOLOGIES LIMITED

Inventor： Sara AWWAD ,  Dennis VOLLBRACHT

IPC: G01S7/41 ,  G01S7/02

Abstract: A method is provided for determining a road condition by using a radar system having transmitter and receiving units for transmitting and receiving radar waves having two different polarizations and providing transmit and receive signals indicating an intensity of the transmitted and received radar waves. Co-polarized backscattering coefficients and at least one cross-polarized backscattering coefficient are determined based on the transmit and receive signals. If the cross-polarized backscattering coefficient is greater than or equal to a threshold, the road condition is determined based on a ratio of the co-polarized backscattering coefficients and based on a difference of one of the co-polarized backscattering coefficients and the cross-polarized backscattering coefficient. If the cross-polarized backscattering coefficient is smaller than the threshold, the road condition is determined based on the ratio and a difference of the co-polarized backscattering coefficients.

公开(公告)号：US20240111018A1

公开(公告)日：2024-04-04

申请号：US18374861

申请日：2023-09-29

Applicant: Aptiv Technologies Limited

Inventor： Dennis VOLLBRACHT ,  Mathias BUSCH ,  Jairo Escudero TORRES

IPC: G01S7/03 ,  G01S13/931

CPC classification number: G01S7/032 ,  G01S13/931 ,  G01S2013/93274 ,  G01S2013/93275

Abstract: A radar sensor comprises a radar transmit and receive unit configured to transmit radar waves to an external environment of the vehicle and to receive radar waves from the external environment of the vehicle, and an interface unit attached to the radar transmit and receive unit. One or more design and/or material parameters of the interface unit are adjusted to fit a predetermined installation position at the vehicle with respect to desired characteristics of the transmitted and received radar waves. A corresponding method for integrating a radar sensor in a vehicle is also disclosed.