Patent ID: 11867841
Assignee: WAYMO LLC
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method comprising:
performing a first scan of a field-of-view (FOV) by a light detection and ranging (LIDAR) device, wherein the LIDAR device comprises at least a first emitter and at least a first detector, wherein the first scan comprises:
during a first emission time period, emitting, by the first emitter, a first light pulse at a first emission time, wherein the first emission time has a first time offset from a start time of the first emission time period; and
during a first detection time period, detecting, by the first detector, a first light signal at a first detection time;

performing a second scan of the FOV, wherein the second scan comprises:
during a second emission time period, emitting, by the first emitter, a second light pulse at a second emission time, wherein the second emission time has a second time offset from a start time of the second emission time period, and wherein the second time offset is different than the first time offset; and
during a second detection time period, detecting, by the first detector, a second light signal at a second detection time; and

determining whether the first light signal is a spurious signal or a reflection from an object based on the first emission time, the first detection time, the second emission time, and the second detection time.