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Fully polarized lidar system and detection method for detecting particle morphology

A technology of laser radar and detection method, which is applied in the direction of radio wave measurement system, measurement device, and utilization of re-radiation, etc. It can solve the problems that the depolarization ratio cannot fully and accurately describe the shape characteristics of scatterers, errors, and misjudgment of detection objects.

Active Publication Date: 2022-07-15
XIAN UNIV OF TECH
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Problems solved by technology

However, in some cases, the depolarization ratio is also easy to make wrong judgments, which is determined by the theoretical assumptions of traditional linear polarization lidar
For regularly arranged particles, the depolarization ratio cannot fully and accurately describe the shape characteristics of the scatterer, and the polarization data given by the linear polarization lidar system can easily make people wrongly judge the detection object

Method used

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  • Fully polarized lidar system and detection method for detecting particle morphology
  • Fully polarized lidar system and detection method for detecting particle morphology
  • Fully polarized lidar system and detection method for detecting particle morphology

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Embodiment Construction

[0055] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0056] Fully polarized lidar systems for detecting particle morphology, such as figure 1 As shown, it includes four parts: a polarized light generating system, a receiving system, a polarization analysis system and a data acquisition processor 20;

[0057] Among them, the polarized light generation system includes a laser 1, wherein the laser 1 adopts an Nd:YAG pulsed laser, and the selected wavelength is 1064nm, such as the Nd:YAG type surelite III pulsed laser of Continuum Company in the United States, the single pulse energy is 625mJ, the repetition frequency is 10Hz, and the pulse width is 10Hz. 4~6nsec.

[0058] Along the optical path of the laser 1 are sequentially arranged with Slide 2 and Slide 3, Slide 2 and Slide 3 are all grade 0 slides from Thorlabs;

[0059] The receiving system includes a telescope 4, and the telescope 4...

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Abstract

The invention discloses a fully polarized laser radar system for detecting particle morphology, comprising four parts: a polarized light generating system, a receiving system, a polarization analysis system and a data acquisition processor; the invention also discloses a system for detecting particle morphology The detection method of the fully polarized lidar system is characterized in that the method is specifically based on the steps of detecting the atmospheric backscattering Miller matrix by using the fully polarized lidar system, and then detecting the shape of the atmospheric particles by the atmospheric backscattering matrix. The fully polarized laser radar system for detecting particle shape of the present invention uses multi-directional linearly polarized laser and circularly polarized laser to detect aerosol particles, which can realize fine discrimination and detection of the shape of aerosol particles in the atmosphere; Fine measurements of cloud particles are used to analyze the ice-water phase state of cloud particles and particle orientation in cirrus clouds.

Description

technical field [0001] The invention belongs to the technical field of laser remote sensing atmospheric detection devices, and relates to a fully polarized laser radar system for detecting particle morphology, in particular to a fully polarized laser radar system for fine measurement of particle morphology, and more specifically to a fully polarized laser radar system for atmospheric detection. The invention also relates to a fully polarized laser radar system for finely measuring the morphology of aerosol particles and cloud particles, and the invention also relates to a method of using the fully polarized laser radar system. Background technique [0002] Due to the intensification of environmental pollution, fine monitoring and analysis of the atmospheric environment has become increasingly important. Because of its high spatial and temporal resolution, lidar is suitable for real-time observation, making it an important tool for detecting aerosol distribution in a large ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/88G01N15/00
CPCG01N15/00G01S17/88G01N2015/0046
Inventor 狄慧鸽华灯鑫
Owner XIAN UNIV OF TECH
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