公开(公告)号：US20210278540A1

公开(公告)日：2021-09-09

申请号：US17191641

申请日：2021-03-03

Applicant: OPSYS Tech Ltd.

Inventor： Niv Maayan ,  Amit Fridman ,  Itamar Eliyahu ,  Mark J. Donovan

IPC: G01S17/89 ,  G01S7/481 ,  G01J1/42 ,  G01S7/4865 ,  G01S17/931

Abstract: A system and method of noise filtering light detection and ranging signals to reduce false positive detection of light generated by a light detection and ranging transmitter in an ambient light environment that is reflected by a target scene. A received data trace is generated based on the detected light. An ambient light level is determined based on the received data trace. Valid return pulses are determined by noise filtering, which can for example, by comparing magnitudes of return pulses to a predetermined variable, N, times the determined ambient light level or by comparing magnitudes of return pulses to a sum of the ambient light level and N-times the variance of the ambient light level. A point cloud comprising the plurality of data points with a reduced false positive rate is generated.