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A method using an all-weather atmospheric coherence length measurement system

An atmospheric coherence length and measurement system technology, which is applied in the field of using an all-weather atmospheric coherence length measurement system to achieve the effects of small amount of transmitted data, fast centroid calculation, and simple use

Active Publication Date: 2020-04-14
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the hourly automatic measurement of atmospheric coherence length, there is no system or method in the prior art to achieve 24. Therefore, the present invention provides a method using an all-weather atmospheric coherence length measurement system

Method used

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  • A method using an all-weather atmospheric coherence length measurement system
  • A method using an all-weather atmospheric coherence length measurement system
  • A method using an all-weather atmospheric coherence length measurement system

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Embodiment 1

[0037] Such as Figure 1-3 As shown, an all-weather atmospheric coherence length measurement system includes an atmospheric coherence length meter, a base 5 for supporting the atmospheric coherence length meter, a drive assembly and a control module that enable the atmospheric coherence length meter to rotate horizontally and pitch relative to the base 5; The atmospheric coherence length meter includes a housing and a telescope 1, a camera 2, and a GPS measurement component arranged in the housing. The camera 2 is arranged at the imaging position of the telescope 1, and the position of the camera 2 is determined by the internal focusing mechanism 3 and the housing. Body connection; the control module is correspondingly connected with the controlled end of the drive assembly, the controlled end of the focusing mechanism 3, the data acquisition end and the data input end of the atmospheric coherence length meter. Camera 2 is a high-speed smart camera in this solution.

[0038] T...

Embodiment 2

[0040] Such as Figure 4 As shown, the method of using a kind of all-weather atmospheric coherence length measuring system described in embodiment 1 may further comprise the steps:

[0041] S1. The system is powered on, and the driving component drives the horizontal rotation angle and pitch angle of the atmospheric coherence length instrument to be 0 degrees; the control module configures the exposure parameters of camera 2 from the data input end of the atmospheric coherence length instrument to camera 2; The acquisition end obtains the GPS information of the system's location and the corresponding time information;

[0042] S2. The control module retrieves the star map information stored in the interior, and according to the GPS information and the corresponding time information, selects the star with the highest brightness within the pitch angle of the atmospheric coherence length meter from the star map information, and determines the position of the star ; To determine ...

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Abstract

The invention relates to the field of optics, in particular to an all-weather atmosphere coherence length measuring system and method. The system comprises an atmosphere coherence length instrument, abase for supporting the atmosphere coherence length instrument, a driving component for driving the atmosphere coherence length instrument to perform horizontal rotation and pitching rotation relative to the base, and a control module; the atmosphere coherence length instrument comprises a shell, and a telescope, a camera and a GPS measuring component, which are disposed in the shell, the camerais disposed at an imaging position of the telescope, and the camera position is connected with the shell through an internal focusing mechanism; and the control module is correspondingly connected with a controlled end of the driving component, the controlled end of the focusing mechanism and a data collection end and a data input end of the atmosphere coherence length instrument. The all-weatheratmosphere coherence length measuring system and method provided by the invention have the advantages that 24-hour all-weather measurement of the atmosphere coherence length is achieved by the measurement of stars, the own brightness of the starlight is utilized, so no light source is needed, furthermore, automatic control is implemented through the control module, and no leveling is needed, suchthat the use is simple.

Description

technical field [0001] The invention relates to the field of optics, in particular to a method for using an all-weather atmospheric coherence length measurement system. Background technique [0002] When light is transmitted in a turbulent atmosphere, due to the fluctuation of the refractive index in the atmosphere, the light wavefront is distorted, causing turbulent effects such as beam drift, spot expansion, and light intensity fluctuations. When describing turbulent effects, the widely used parameters are atmospheric coherence length, atmospheric coherence The length describes the comprehensive turbulence intensity on the transmission path, and is an important parameter for the study of laser atmospheric transmission and adaptive optics. [0003] In order to study the all-weather laser transmission characteristics, and in order to achieve automation, a system and method that can automatically measure the atmospheric coherence length in 24 hours is needed. Contents of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J9/00
CPCG01J9/00
Inventor 侯再红靖旭何枫谭逢富张巳龙吴毅秦来安张守川陈修涛黄志刚王浩
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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