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LIDAR SYSTEM AND METHOD OF OPERATION

  • US 20200132847A1
  • Filed: 10/24/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/24/2018
  • Status: Active Grant
First Claim
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1. A method for environment mapping, comprising:

  • generating a periodic laser output representative of a periodic output signal that encodes a code sequence, comprising modulating a substantially continuous-wave carrier signal based on the code sequence;

    throughout a time period, continuously transmitting the periodic laser output into an environment;

    during the time period, at an optical sensor, receiving a return signal comprising a reflection, from an object within the environment, of the periodic laser output;

    determining a sample indicative of a contiguous time window of the return signal, wherein a duration of the contiguous time window is greater than a period of the periodic output signal;

    generating a filtered sample, comprising filtering the sample based on the code sequence;

    based on the filtered sample;

    determining an extremum of the filtered sample; and

    determining a delay time associated with the extremum; and

    based on the delay time, determining a relative location of the object.

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