Automatic continuous detection device of micro-pulse differential absorption lidar water vapor spatial and temporal distribution

Abstract

The invention discloses an automatic continuous detection device of micro-pulse differential absorption lidar water vapor spatial and temporal distribution. The device comprises dual wavelength detection light sources, a lidar receiving optical system, a signal detection system, a three dimensional rotating platform, a transient recorder, an automatic temperature and humidity recorder and the like. The wavelengths of the two detection light sources are respectively positioned on a water vapor absorption peak and a water vapor non-absorption peak, the detection light can be transmitted into atmosphere at any angle, water vapor absorption characteristic backward scattering signals in specific spectral lines are obtained, water vapor distance-distinguished relative humidity profiles in transmission paths of light are obtained by inversion, and after profiles being calibrated, high-resolution and high-precision water vapor relative humidity spatial and temporal distribution data in light paths is finally obtained. The automatic continuous detection device can carry out day and night all-weather observation for water vapor relative humidity stereo distribution, and has advantages of high time resolution, high spatial resolution and high detection precision.

Description

technical field [0001] The present invention relates to an optical telemetry receiving device and method, in particular to a combination of differential absorption laser radar technology and micro-pulse laser radar technology to establish a dual-wavelength differential absorption micro-pulse laser radar device to realize automatic monitoring of the temporal and spatial distribution of water vapor in the atmosphere. Continuous monitoring techniques and methods. Background technique [0002] There is not much water vapor in the atmosphere, and it only accounts for 4% of the atmosphere at most. Water vapor only accounts for 0.001% of the total global water volume. Water vapor is a gas with the largest concentration change in the atmosphere. Water vapor plays a very important role in the environment, meteorology, climate and military fields. Most of the water vapor is concentrated in the lower layer, half of the water vapor is concentrated below 2 kilometers, and three-quarters...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a micro-pulse differential absorption laser radar water vapor time-space distribution automatic continuous detection device, which realizes automatic continuous detection of water vapor time-space distribution with high time resolution, high spatial resolution and high precision; innovatively uses The wide-bandwidth laser light source detects the water vapor absorption peak spectral line, and combines the

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