US 11,782,157 B2
Range estimation for LiDAR systems
Zhenghan Zhu, Mountain View, CA (US); Yue Lu, Mountain View, CA (US); Yu-Ching Yeh, Mountain View, CA (US); and Lingkai Kong, Mountain View, CA (US)
Assigned to GUANGZHOU WOYA LAIDELING TECHNOLOGY CO., LTD., Guangzhou (CN)
Filed by GUANGZHOU WOYA LAIDELING TECHNOLOGY CO., LTD., Guangzhou (CN)
Filed on Aug. 21, 2020, as Appl. No. 17/255.
Prior Publication US 2022/0057511 A1, Feb. 24, 2022
Int. Cl. G01S 17/18 (2020.01); G01S 7/483 (2006.01); G01S 7/48 (2006.01)
CPC G01S 17/18 (2020.01) [G01S 7/483 (2013.01); G01S 7/4804 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A range estimation system for an optical sensing system, comprising:
an analog to digital converter (ADC) configured to generate a plurality of pulse samples based on a laser pulse returned from an object, wherein a waveform of the returned laser pulse is substantially triangular including a rising edge and a falling edge; and
a processor, configured to:
generate synthesized pulse samples on the substantially triangular waveform based on the pulse samples;
determine an arrival time of the returned laser pulse based on the ADC generated pulse samples and the synthesized pulse samples; and
estimate a range between the object and the optical sensing system based on the arrival time of the returned laser pulse.