laser ceilometer

laser ceilometer

[′lā·zər sē′läm·əd·ər]
(engineering)
A ceilometer in which the time taken by a light pulse from a ground laser to travel straight up to a cloud ceiling and be reflected to a receiving photomultiplier is measured and converted into a cathode-ray display that indicates cloud-base height.
References in periodicals archive ?
We see that the SNR can be improved by accumulating the original signal of the laser ceilometer. The SNR of the original signal is gradually less than 10 (this value is the minimum requirement for the SNR that can be used to retrieve aerosolbackscatter coefficients [4,17]) at 1.5 km, but the available height of it can reach 3-4 km after accumulating for 30 min.
Then, the extinction coefficient deduced from the surface meteorological visibility was compared with the near-surface extinction coefficient of the CYY-2B, CL51 laser ceilometer, and the MPL.
Soderholm, "Laser ceilometer measurements of Australian dust storm highlight need for reassessment of atmospheric dust plume loads," Geophysical Research Letters, vol.
• Cloud Base Measurement System includes laser ceilometer located close to the DVOR site for precision approach runway direction.
The new laser ceilometers seem to know how much haze a human eye can penetrate and they look up until they reach that point and report the distance.