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[lahy-dahr] /ˈlaɪ dɑr/
noun, Electronics, Optics.
a device similar to radar in principle and operation but using infrared laser light instead of radio waves and capable of detecting particles, distant objects, and varying physical conditions in the atmosphere.
Also called laser radar.
Origin of lidar
1960-65; li(ght1) + (ra)dar Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for lidar
Historical Examples
  • There are many other important active sensor classes, three of which are active acoustics, lidar and magnetic anomaly detectors.

    Shock and Awe Harlan K. Ullman
  • lidar detects shape directly and shape fluctuations such as vibration and motion and has proven very hard to spoof.

    Shock and Awe Harlan K. Ullman
  • Islamabad is the starting-point for both the lidar valley and Martand, and here the house-boat may be left.


    Sir Francis Edward Younghusband
  • A favourite side-valley is the lidar, for which the road takes off from the main valley at Bijbehara.


    Sir Francis Edward Younghusband
  • And so, in marches of about ten miles a day, we came to Pahlgam on the banks of the dancing lidar.

lidar in Science
  1. A method of detecting distant objects and determining their position, velocity, or other characteristics by analysis of pulsed laser light reflected from their surfaces. Lidar operates on the same principles as radar and sonar.

  2. The equipment used in such detection. See also Doppler effect, radar, sonar.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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