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Multi-wavelength laser radar aerosol particle spectrum distribution inversion method and system

A technology of laser radar and aerosol, which is applied in the direction of radio wave measurement system, particle size analysis, particle and sedimentation analysis, etc., can solve the problems of complex calculation and only suitable for some specific occasions, and achieve simple calculation, wide application range and accuracy inversion effect

Inactive Publication Date: 2018-09-14
TAIZHOU POLYTECHNIC COLLEGE
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Problems solved by technology

This method needs to calculate GCV parameters and analyze the change process of parameter values ​​with Lagrangian multipliers, so it has the disadvantages of complex calculation and only suitable for some specific occasions.

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  • Multi-wavelength laser radar aerosol particle spectrum distribution inversion method and system
  • Multi-wavelength laser radar aerosol particle spectrum distribution inversion method and system
  • Multi-wavelength laser radar aerosol particle spectrum distribution inversion method and system

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Embodiment Construction

[0060] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0061] NCRE (Noise Confidence Region Evaluation, translation software can be translated into noise confidence region evaluation algorithm) algorithm.

[0062] When using the regular method to retrieve the aerosol particle spectrum distribution, Detlef Müller et al. used the GCV method to select the regular parameters. This method considers the correlation between data, but it has disadvantages such as complicated calculation and only suita...

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Abstract

The invention discloses a multi-wavelength laser radar aerosol particle spectrum distribution inversion method and system. The method comprises the following steps: acquiring optical data and regularparameters, wherein the optical data comprises an aerosol extinction coefficient and an aerosol backscattering coefficient; determining a kernel matrix; calculating a weight coefficient according to the kernel matrix, optical data and regular parameters; calculating evaluation error according to the optical data, kernel matrix and weight coefficient; determining an evaluation set; and judging whether the evaluation error is within the evaluation set, and if not, adjusting the regular parameters and returning to the step of calculating the weight coefficient, and if yes, determining the spectral distribution of atmospheric aerosol particles based on the weight coefficient through inversion. Compared with the prior art, the method adopts an NCRE algorithm to select appropriate regular parameters to achieve accurate inversion of atmospheric aerosol particle spectrum distribution, and has simple calculation and wide application range.

Description

Technical field [0001] The invention relates to the technical field of laser radar data, and in particular to a method and system for inversion of aerosol particle spectrum distribution of a multi-wavelength laser radar. Background technique [0002] Aerosol is one of the components of the atmosphere. It has important effects on climate change, environmental pollution, human health, etc. and has become the focus of global attention. Especially in recent years, the phenomenon of dust and haze occurring more and more frequently around the world has caused more and more attention to the physical chemistry and optical properties of aerosols. Aerosol extinction coefficient and particle spectral distribution are the basic optical and physical properties of aerosols. They play a very important role in studying the radiation force of aerosols and the impact of aerosols on climate change. In addition, the spectral distribution of aerosol particles is also one of the important environment...

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Application Information

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IPC IPC(8): G01N15/02G01S17/88
CPCG01N15/0205G01S17/88
Inventor 刘振兴陆剑锋
Owner TAIZHOU POLYTECHNIC COLLEGE
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