公开(公告)号：US20230194724A1

公开(公告)日：2023-06-22

申请号：US17739264

申请日：2022-05-09

Applicant: Beijing Institute of Technology

Inventor： Qun HAO ,  Jie CAO ,  Jingjing LI ,  Kun LI ,  Jiaqi GUO ,  Kaili ZHANG

IPC: G01S17/894 ,  G02B26/08 ,  H01L31/107 ,  G01S7/481 ,  G01S7/484 ,  G01S7/4863

CPC classification number: G01S17/894 ,  G01S7/484 ,  G01S7/4817 ,  G01S7/4863 ,  G02B26/0833 ,  H01L31/107

Abstract: A high-dynamic-range hybrid solid-state lidar system, which is based on a transponder array module, includes a transmitting system, a transceiver integrated optical system, a one-dimensional scanning device, a detecting system, and an information processing system. An information processing control circuit and a gain control module increase a total amplification factor, in a single timing period, of a gain circuit over time, thereby alleviating an echo signal intensity distortion, and expanding a dynamic ranging range. The system uses the one-dimensional scanning device and the transceiver integrated optical system composed of a circulator, a lens set, and an optical fiber array, so that the optical system is separated from an avalanche photo diode (APD) detector, and focusing is not required. A temperature of a linear APD array is monitored in the detecting system to adjust a reverse bias voltage of an APD correspondingly and alleviate unstable gain caused by a temperature change.