1) Instrument similar to radar 2) Laser-radar 3) Measuring device 4) Measuring instrument 5) Measuring system 6) Modern speed-detection system 
Lidar (also written LIDAR or LiDAR) is a remote sensing technology that measures distance by illuminating a target with a laser and analyzing the reflected light. Although thought by some to be an acronym of Light Detection And Ranging, the term lidar was actually created as a portmanteau of `light` and `radar.` Lidar is popularly used as a te...
(from the article `telecommunications media`) ...also are quite common in measurement and remote sensing applications, such as optical range-finding and velocity determination, industrial quality ...
(light detection and ranging) A technique, similar to radar, that works by beaming pulses of laser light through the atmosphere and detecting the light reflected by dust and other small particles in the air called aerosols. The time between the pulse and the echo determines the ...
See Laser Induced Direction And Range.
Light Detection And Ranging
acronym: laser-radaracronym: light detection and ranging (instrument)
noun a measuring system that detects and locates objects on the same principle as radar but uses light from a laser; a potential technology for detecting air turbulence that can affect aircraft