Atmospheric detection laser radar system suitable for space application

Abstract

The invention provides an atmospheric detection laser radar system suitable for space application, and the system comprises an atmospheric laser, a laser controller, a laser pointing centering mechanism, a laser pointing control unit, a receiving telescope, an atmospheric detection relay system, an atmospheric detection management controller, and a platform. Three working modes including a measurement mode, a self-checking mode and a polarization calibration mode are provided. According to the invention, high-energy, narrow-pulse-width and long-life dual-wavelength laser pulses are output, coaxial matching with an optical axis of a receiving telescope is realized, the matching precision reaches a micro-radian magnitude, polarization detection and dual-wavelength detection of weak echo signals are completed, high-precision measurement of an extinction coefficient and a backscattering coefficient of an atmospheric target is realized, and the measurement precision is high. According to the invention, high-precision detection of aerosol, particulate matters, clouds and atmospheric molecules in large-scale atmosphere is realized by using high-energy laser pulse and high-sensitivity detection, and the system has the characteristics of high spatial resolution and high detection precision, and creates favorable conditions for early warning and forecasting of atmospheric particulate pollution.

Description

technical field [0001] The invention relates to the technical field of measurement and testing, in particular to an atmospheric detection laser radar system suitable for space applications. Background technique [0002] Large-scale, continuous, and quantitative monitoring of the spatial distribution of atmospheric particulates is a prerequisite for understanding the composition, transport, and formation mechanisms of atmospheric particulates, as well as forecasting and early warning of air pollution, and is also the basis for specific measures to control atmospheric particulates. At present, my country's atmospheric environment monitoring system has insufficient regional coverage, incapable of all-day, three-dimensional observation and other shortcomings. The atmospheric detection lidar system suitable for space applications can effectively solve the urgent problems that my country's atmospheric environment monitoring faces. [0003] The atmospheric detection lidar system su...

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Problems solved by technology

[0006] The present invention aims to solve the problems of insufficient regional coverage, incapable of full-time and stereoscopic observation in my country's atmospheric environment monitoring system, and proposes an atmospheric detection laser radar system suitable for space applications. The system has high spatial resolution , high detection accuracy, and taking advantage of the wide coverage of the space platform, it can realize large-scale, continuous and quantitative monitoring of the spatial distribution of atmospheric particulate matter, monitor the daily sedimentation of regional pollutants and the three-dimensional spatial change trend, and obtain regional Changes in the total amount of pollution create favorable conditions for locating pollution sources and realizing early warning and forecasting of atmospheric particulate pollution

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