公开(公告)号：US20230062298A1

公开(公告)日：2023-03-02

申请号：US17823490

申请日：2022-08-30

Applicant: Seagate Technology LLC

Inventor： Adam R. BUSH ,  Kevin A. GOMEZ ,  Eric James DAHLBERG

IPC: G01S7/487 ,  G01S7/481 ,  G01S7/4861 ,  G01S7/486

Abstract: Interference mitigation for a LiDAR system includes identifying a presence or absence of interference from a non-co-located light source in a sample of incident light received by a detector in the LiDAR system. In the absence of interference, a nominal set of reference values is used for one or more spacio-temporal scanning profile trajectory parameters. Scanner components of the LiDAR system are controlled using the nominal set of reference values. In the presence of interference, the nominal set of reference values is augmented to modify the spacio-temporal scanning profile trajectory parameters. Scanner components of the LiDAR system are controlled using the augmented set of reference values to avoid detection of and interference by the non-co-located light source.

公开(公告)号：US20220113388A1

公开(公告)日：2022-04-14

申请号：US17067358

申请日：2020-10-09

Applicant: Seagate Technology LLC

Inventor： Adam R. BUSH ,  Kevin A. GOMEZ

IPC: G01S7/4861 ,  G01S17/931 ,  G01S7/481 ,  G01S7/497

Abstract: LiDAR optical paths, particularly in co-located emitter/receiver path configurations, can introduce unintended and unwanted reflections due to mirrors, lenses, and/or enclosure materials or glass that can fall on one or more photosensors. These un-desirable signals can cause significant disruptions in output amplifier biasing and/or severe channel saturation. Autonomous vehicle LiDAR is particularly challenging as packaging requirements require complex optics to direct the laser source; the target size, shape, and relative velocity, and distance to the autonomous vehicle are unknown; and the location of the target objects within range are potentially rapidly changing over time. The presently disclosed dual photodiode LiDAR systems are used to separate and compensate for errors introduced by LiDAR optics to improve the accuracy and reliability of LiDAR systems, including but not limited to autonomous vehicle LiDAR systems.