lidar

or LI·DAR

[ lahy-dahr ]

Phonetic (Standard)IPA

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.

lidar

/ lī′där /

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 .
The equipment used in such detection.
See also Doppler effect

Origin of lidar¹

1960–65; li(ght ¹ ) + (ra)dar

There are many other important active sensor classes, three of which are active acoustics, lidar and magnetic anomaly detectors.

Lidar detects shape directly and shape fluctuations such as vibration and motion and has proven very hard to spoof.

Islamabad is the starting-point for both the Lidar valley and Martand, and here the house-boat may be left.

A favourite side-valley is the Lidar, for which the road takes off from the main valley at Bijbehara.

And so, in marches of about ten miles a day, we came to Pahlgam on the banks of the dancing Lidar.

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