Device and method for measuring atmospheric coherence length of mobile beacon

Abstract

The invention discloses a device and a method for measuring the atmospheric coherence length of a mobile beacon. The device consists of a beacon light source, a light source carrier, a receiving telescope, a rotating cloud deck, a subsequent imaging system, an analog or digital CCD camera and a computer, wherein the beacon light source is fixed on the light source carrier to move during measurement; light emitted from the light source passes through the turbulent atmosphere to form two faculae vertically arrayed on a target face of the analog or digital CCD camera through the receiving telescope and the subsequent imaging system; converted digital images are sent to the computer for processing; and according to the data processing results, the computer controls the analog or digital CCD camera to change parameters, automatically adjust image qualities and perform the identification and extraction of targets so as to measure the atmospheric coherence length. The device and the method have the advantages of greatly expanding the working range of an atmospheric coherence length meter, effectively reducing errors caused by different levels of operators, achieving more real and reliable measurement results and greatly improving the properties of the atmospheric coherence length meter.

Description

technical field The invention relates to the field of atmospheric optics, in particular to an instrument and a measurement method capable of quickly and automatically tracking and measuring the atmospheric coherence length value of light waves of mobile beacons along their propagation paths in real time. Background technique Atmospheric coherence length can describe the comprehensive turbulence intensity of light waves on the path of atmospheric transmission. Therefore, it is often used as a very important calibration parameter in application fields such as observatory site selection, laser atmospheric transmission, and adaptive optics research. In practical applications, some fields of atmospheric optics not only need to obtain the coherence length value of the whole layer of the atmosphere and the oblique fixed path, but also need to obtain the atmospheric coherence length on the light wave propagation path that changes with time between the moving target and the measurem...

AI Technical Summary

Problems solved by technology

The technical problem to be solved by the present invention is to provide a mobile beacon atmospheric coherence length measuring device and method, which uses a programmable controllable rotating platform and a novel computer data processing algorithm to solve the problem of automatic tracking and measurement of moving light sources. Necessary contributions to the research and application of laser atmospheric transmission

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