Rotary type laser ceilometer for observing cloud amount

Abstract

The invention designs a rotary type laser ceilometer for observing cloud amount. A fixed zenith angle is changed into a rotary transmitting and receiving system in a certain three-dimensional space angle, and clouds at different positions are sampled. The rotary type laser ceilometer can increase sampling on the clouds in the sky so as to improve the observation precision of the cloud amount; and one set of the laser ceilometer is utilized to realize the observation of two basic parameters including a cloud height and the cloud amount. The rotary type laser ceilometer comprises a laser transmitting system and a laser receiving system; the laser transmitting system comprises a laser device and a beam expander; the laser receiving system comprises a telescope, a convex lens, a narrow-band filtering sheet and a photomultiplier; the convex lens, the narrow-band filtering sheet and the photomultiplier are mounted in a lens cone of the telescope; the laser device and the beam expander are mounted on the outer wall of the lens cone of the telescope; the rotary type laser ceilometer further comprises a bottom bracket, a rotary shaft, a first motor and a second motor; the lens cone of the telescope is fixedly connected with the rotary shaft; the two ends of the rotary shaft are erected in the bottom bracket through a bearing seat; the rotary shaft is in transmission connection with the first motor and the first motor is mounted on the bottom bracket; and the bottom bracket is in transmission connection with the second motor.

Description

Technical field: [0001] The present invention involves a rotating laser cloud high instrument used for cloud volume observation, which is a laser radar and laser atmospheric detection technology. Background technique: [0002] The cloud is a visible polymer composed of a large amount of small water droplets and (or) ice crystal particles suspended in the atmosphere.In the atmospheric radiation transmission and the formation of precipitation, it has an extremely important role. Of course, the impact of cloud heights and cloud volume is indispensable. Therefore, understanding the distribution laws and characteristics of cloud volume has very important practical significance and theoretical value.At present, cloud has become one of the most important and most difficult meteorological elements in the global climate model. The high change of clouds and clouds is an important parameter describing clouds.The radiation balance of the cloud system and the precipitation generated by the c...

AI Technical Summary

Problems solved by technology

[0006] In addition, if a laser ceilometer and an infrared ceilometer are configured at the same site in order to measure cloud height and cloud amount at the same time, the cost is very high

The applicant has not found a meteorological system that simultaneously measures cloud height and amount

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