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Direct detection Doppler LIDAR method and direction detection Doppler LIDAR device

  • US 8,675,184 B2
  • Filed: 06/30/2009
  • Issued: 03/18/2014
  • Est. Priority Date: 07/04/2008
  • Status: Active Grant
First Claim
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1. A method for Doppler light detection and ranging (LIDAR) measurement of speeds, the method comprising:

  • directing laser pulses at a medium to be measured at a repetition rate of a plurality of laser pulses per measurement; and

    operating a detector to detect pulses of radiation, which are emitted by the medium as a result of exposure of the medium to the laser pulses, at a detection rate, the operating including controlling the detector to estimate an intensity of the measurement signal from a previous profile of a measurement signal intensity, select a number of the pulses of radiation which are to be integrated by the detector based on the estimate, and integrate the number of the pulses of radiation per measurement; and

    wherein the repetition rate is at least one order of magnitude greater than the detection rate, and the laser pulses for each measurement are transmitted at a frequency of greater than or equal to 1 kHz.

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