Patent ID: 11885916
Assignee: VELODYNE LIDAR USA, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A lidar system comprising:
a first transmitter;
a receiver;
a processor; and
a memory in communication with the processor and comprising instructions which, when executed by the processor, cause the processor to perform operations including:
controlling the first transmitter to transmit a first laser beam in which a first signature is embedded, the first signature including one or more pulses;
controlling the receiver to receive, at a photo detector, a second laser beam and generate a return signal corresponding to the second laser beam, wherein the second laser beam comprises (i) a portion of the first laser beam reflected by an object or (ii) a distinct laser beam transmitted by a second transmitter;
extracting a return signature from the return signal;
determining whether, within respective thresholds, the return signature matches the first signature based, at least in part, on one or more pulses of the return signature, the processor configured to adjust the respective thresholds based on a variation of performance parameters; and
when the return signature is determined to match the first signature, determining a distance between the receiver and the object using at least one pulse of the one or more pulses of the return signature, such that the at least one pulse of the return signature is used to i) identify the return signature as matching the first signature and ii) determine the distance between the receiver and the object.