Simple diagram of ceilometer transmitter. The receiver stage (Figure 3) consists of a telescope, optics (mirrors, filters to reduce sky/sunlight background and optics to collimate light), photodetector and electronics to digitize and process the

The Vaisala Laser Ceilometer (CEIL) is a self-contained, ground-based, active, remote-sensing device designed to measure cloud-base height, vertical visibility, and potential backscatter signals by aerosols. It detects up to three cloud layers simultaneously. Model CL31 has a maximum vertical range of 7700 meters (m).

The optical system of the ceilometer in the transmitting channel is a laser beam expander according to the Galilean scheme (lenses 1 and 2 in Fig. 1), which reduces the probing beam divergence...

The CL51 utilizes pulsed diode laser technology (LIDAR = Light Detection and Ranging), where short, powerful laser pulses are emitted into a vertical or near-vertical direction. The reflection or backscatter of the LIDAR pulse is the consequence of the interaction of the light signal with

Laser ceilometer. A ceilometer is a device that uses a laser or other light source to determine the height of a cloud ceiling or cloud base. [1] Ceilometers can also be used to measure the aerosol concentration within the atmosphere. [2] A ceilometer that uses laser light is a type of atmospheric lidar (light detection and ranging) instrument ...

The Cloud Height Sensor (the ceilometer), determines cloud height and levels in the atmosphere. The ceilometer (pronounced se-lom'-i-ter) uses invisible laser radiation to detect cloud levels. The ceilometer works by transmitting a pulse of laser light into the atmosphere and sensing the light return as it is reflected back toward the ...

Works on the LIDAR principle – backscattered light. High frequency laser pulses to negate low power and background noise. Continuous operation – message reported every 15 s. Generates backscatter profiles & cloud heights. Make sure the main circuit breaker (A), heater/blower (B) and battery (C) switches are all set to OFF.

The meteorological variables measured at ground-level are used as features of the algorithm and the ABL height estimated by the STRATfinder algorithm using ceilometer profiles, a small lidar ...

CHM 15k Lufft ceilometer is a near-infrared Nd:YAG 1064 nm lidar system with a maximum range of 15.4 km (Figure 9). The ceilometer emits a vertical pulsed laser to the atmosphere, where light is...

A ceilometer is a device which uses a laser or other light source to determine the height of a cloud ceiling or cloud base. Ceilometers can also be used to measure the aerosol concentration within the atmosphere. When based on laser, it is a variant of atmospheric lidars (light detection and ranging) which send short laser pulses into the ...