公开(公告)号：US20240302509A1

公开(公告)日：2024-09-12

申请号：US18669875

申请日：2024-05-21

Applicant: Aurora Operations, Inc.

Inventor： Zeb Barber ,  Randy R. Reibel ,  Emil Kadlec

IPC: G01S7/4912 ,  G01S17/931

CPC classification number: G01S7/4917 ,  G01S17/931

Abstract: A light detection and ranging (LIDAR) system may include a laser configured to output a beam, an amplifier and a plurality of splitters. The amplifier may generate, based on the beam, a plurality of amplified optical signals that are respectively associated with a plurality of phases. The plurality of splitters, coupled between the amplifier and a plurality of outputs, may receive the plurality of amplified optical signals, generate, at a first point of time, a first combined optical signal of the plurality of amplified optical signals at a first output of the plurality of outputs with no optical signal at remaining outputs of the plurality of outputs, and generate, at a second point of time, a second combined optical signal of the plurality of amplified optical signals at a second output of the plurality of outputs with no optical signal at remaining outputs of the plurality of outputs.

公开(公告)号：US11921210B2

公开(公告)日：2024-03-05

申请号：US17959406

申请日：2022-10-04

Applicant: Aurora Operations, Inc.

Inventor： Stephen C. Crouch ,  Brant Kaylor ,  Randy R. Reibel

IPC: G01S17/42 ,  G01S7/48 ,  G01S17/89 ,  G06F18/22 ,  G06F18/2413 ,  G06F18/2431 ,  G06V10/40 ,  G06V10/74 ,  G06V10/75 ,  G06V10/764 ,  G06V20/64

CPC classification number: G01S17/42 ,  G01S7/4802 ,  G01S7/4808 ,  G01S17/89 ,  G06F18/22 ,  G06F18/24147 ,  G06F18/2431 ,  G06V10/40 ,  G06V10/7515 ,  G06V10/761 ,  G06V10/764 ,  G06V20/64

Abstract: A method for classifying an object in a point cloud includes computing first and second classification statistics for one or more points in the point cloud. Closest matches are determined between the first and second classification statistics and a respective one of a set of first and second classification statistics corresponding to a set of N classes of a respective first and second classifier, to estimate the object is in a respective first and second class. If the first class does not correspond to the second class, a closest fit is performed between the point cloud and model point clouds for only the first and second classes of a third classifier. The object is assigned to the first or second class, based on the closest fit within near real time of receiving the 3D point cloud. A device is operated based on the assigned object class.

公开(公告)号：US12196854B2

公开(公告)日：2025-01-14

申请号：US18099842

申请日：2023-01-20

Applicant: Aurora Operations, Inc.

Inventor： Stephen C. Crouch ,  Randy R. Reibel ,  James Curry ,  Michelle Milvich ,  Krishna Rupavatharam

IPC: G01S17/32 ,  G01S7/487 ,  G01S17/26 ,  G01S17/42 ,  G01S17/58 ,  G01S7/51

Abstract: Doppler correction of phase-encoded LIDAR includes a code indicating a sequence of phases for a phase-encoded signal, and determining a first Fourier transform of the signal. A laser optical signal is used as a reference and modulated based on the code to produce a transmitted phase-encoded optical signal. A returned optical signal is received in response. The returned optical signal is mixed with the reference. The mixed optical signals are detected to produce an electrical signal. A cross spectrum is determined between in-phase and quadrature components of the electrical signal. A Doppler shift is based on a peak in the cross spectrum. A device is operated based on the Doppler shift. Sometimes a second Fourier transform of the electrical signal and the Doppler frequency shift produce a corrected Fourier transform and then a cross correlation. A range is determined based on a peak in the cross correlation.

公开(公告)号：US11994629B2

公开(公告)日：2024-05-28

申请号：US17530328

申请日：2021-11-18

Applicant: Aurora Operations, Inc.

Inventor： Zeb Barber ,  Randy R. Reibel ,  Emil Kadlec

IPC: G01S7/4912 ,  G01S17/931

CPC classification number: G01S7/4917 ,  G01S17/931

Abstract: The present disclosure is directed to light detection and ranging (LIDAR) system including a laser configured to output a beam, an amplifier, and an optical network. The amplifier may be configured to receive a plurality of optical signals that are generated based on the beam and are respectively associated with a plurality of phases. The amplifier may be configured to generate a plurality of amplified optical signals based on the plurality of optical signals. The optical network may be coupled to the amplifier. The optical network may be configured to receive the plurality of amplified optical signals. The optical network may be configured to generate an optical signal based on the plurality of amplified optical signals. An amplitude of the optical signal may correspond to a combined amplitude of the plurality of amplified optical signals.