公开(公告)号：WO2022039899A1

公开(公告)日：2022-02-24

申请号：PCT/US2021/043566

申请日：2021-07-28

申请人： BEIJING VOYAGER TECHNOLOGY CO. LTD. ,  CHEN, Wanli

发明人： ZHU, Zhenghan ,  LU, Yue ,  YEH, Yu-ching ,  KONG, Lingkai

IPC分类号： G01S17/18 ,  G01S7/4865 ,  G01S7/481 ,  H03M1/12

摘要： Embodiments of the disclosure provide an optical sensing system, a range estimation system for the optical sensing system, and a method for the optical sensing system. The exemplary optical sensing system includes a transmitter configured to emit a laser pulse towards an object. The optical sensing system further includes a range estimation system configured to estimate a range between the object and the optical sensing system. The range estimation system includes an analog to digital converter (ADC) configured to generate a plurality of pulse samples based on the laser pulse returned from the object. The returned laser pulse has a substantially triangular waveform including a rising edge and a falling edge. The range estimation system further includes a processor. The processor is configured to generate synthesized pulse samples on the substantially triangular waveform based on the pulse samples. The processor is further configured to determine an arrival time of the returned laser pulse based on the ADC generated pulse samples and the synthesized pulse samples. The processor is also configured to estimate a range between the object and the optical sensing system based on the arrival time of the returned laser pulse.