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Full-polarization laser radar system used for detecting shapes of particles and detection method of full-polarization laser radar system

A laser radar and full polarization technology, which is applied in radio wave measurement systems, measurement devices, using re-radiation, etc., 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: 2018-12-07
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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  • Full-polarization laser radar system used for detecting shapes of particles and detection method of full-polarization laser radar system

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Embodiment Construction

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

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

[0057] Wherein, the polarized light generating system includes a laser 1, wherein the laser 1 adopts a Nd:YAG pulsed laser, and the selected wavelength is 1064nm, such as the Nd:YAG type surelite III pulsed laser of the U.S. Continuum Company, with a single pulse energy of 625mJ, a repetition rate of 10Hz, and a pulse width of 4~6nsec.

[0058] Along the optical path of the laser 1, there are arranged in sequence Slide 2 and Slide 3, Slide 2 and Slide 3 is a Grade 0 slide from Thorlabs;

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

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Abstract

The invention discloses a full-polarization laser radar system used for detecting shapes of particles. The laser radar system comprises a polarization light generation system, a receiving system, a polarization analysis system and a data acquisition processor. The invention also discloses a detection method of the full-polarization laser radar system used for detecting shapes of particles. The detection method is characterized in that by use of the full polarization laser radar system to carry out detection, an atmosphere back scattering Miller matrix is obtained; and then the atmosphere backscattering Miller matrix carries out detection on atmosphere particle shapes. According to the invention, by use of all-directional linear polarization laser and circular polarization laser to detectaerosol particles, fine discrimination and detection are performed on the shapes of atmosphere particles; fine measurement is performed on cloud particles in the atmosphere; and the method is used foranalyzing ice water phase states of the cloud particles and particle guidance in cirrus cloud.

Description

technical field [0001] The invention belongs to the technical field of laser remote sensing atmospheric detection devices, and relates to a full-polarization laser radar system for detecting particle shapes, in particular to a full-polarization laser radar system for particle shape fine measurement, and more specifically to a full-polarization laser radar system for atmospheric 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 for 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 lidar has the advantages of high temporal and spatial resolution and is suitable for real-time observation, it has become an important tool for detecting the large-scale distribution of aerosols. According to di...

Claims

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Application Information

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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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