US 12,222,456 B2
Dynamic receiver gain control for LiDAR system
Yue Lu, Mountain View, CA (US); Vipul Chawla, Mountain View, CA (US); and Youmin Wang, Mountain View, CA (US)
Assigned to GUANGZHOU WOYA LAIDELING TECHNOLOGY CO., LTD., Guangzhou (CN)
Filed by GUANGZHOU WOYA LAIDELING TECHNOLOGY CO., LTD., Gaungzhou (CN)
Filed on Aug. 17, 2020, as Appl. No. 16/995,423.
Application 16/995,423 is a continuation in part of application No. 16/920,650, filed on Jul. 3, 2020, abandoned.
Prior Publication US 2022/0003851 A1, Jan. 6, 2022
Int. Cl. G01S 7/486 (2020.01); G01S 7/481 (2006.01); G01S 17/931 (2020.01)
CPC G01S 7/4868 (2013.01) [G01S 7/4817 (2013.01); G01S 17/931 (2020.01)] 18 Claims
OG exemplary drawing
 
1. An optical sensing system comprising:
a transmitter configured to emit light beams at a plurality of vertical detection angles to scan an object;
a receiver comprising a detector configured to detect the light beams returned by the object; and
a controller configured to dynamically vary a gain of the detector for detecting the light beams of the respective vertical detection angles based on a predetermined look-up table mapping the respective vertical detection angles to target detector gains, wherein the controller is further configured to determine a first reflectivity of the object based on the light beams received by the receiver and adjust the gain of the detector by a ratio of the first reflectivity and a second reflectivity of a ground.