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Measuring device and method for atmosphere coherence length in limited inclined range

A technology of atmospheric coherence length and fixed path, which is applied in measurement devices, measurement optics, optical radiation measurement, etc., to achieve the effects of simple structure, convenient operation and advanced measurement methods.

Inactive Publication Date: 2005-05-25
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] Aiming at the problems existing in the measurement of atmospheric coherence length, the present invention utilizes the principle of light wave arrival angle fluctuation to measure the atmospheric coherence length measurement device and method on a fixed inclined path and successfully solves the problem of measuring the atmospheric coherence length value of spherical waves at a finite height , has made an important contribution to the engineering application of laser atmospheric transmission

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  • Measuring device and method for atmosphere coherence length in limited inclined range
  • Measuring device and method for atmosphere coherence length in limited inclined range
  • Measuring device and method for atmosphere coherence length in limited inclined range

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Embodiment Construction

[0028] see figure 1 , the device is composed of a beacon light source 1, an optical receiving and photoelectric conversion system 2 and a data processing system 3, and the optical receiving and photoelectric conversion system 2 includes a Cassegrain type receiving light telescope 4, an optical imaging system 5 and a device mounted on the telescope Camera 6 for angle of arrival fluctuation measurement. During the measurement, a point light source is mounted on the tethered balloon, that is, a non-directional iodine-tungsten lamp is used as the beacon light source 1 . The device is placed at a certain distance from the tethered balloon, and the beacon light source is imaged by the receiving telescope 4 of the device after passing through the turbulent atmosphere through a fixed oblique path. The 300-350mm Cassegrain type receiving optical telescope is equipped with two receiving apertures 7 with a diameter of 100mm. The optical imaging system further separates the two beacon l...

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Abstract

The invention relates to a measuring device and method for the atmospheric coherence length on an oblique fixed path, which is composed of a beacon light source, an optical receiving system, a photoelectric conversion system and a data processing system, and is characterized in that the optical receiving system and the photoelectric conversion system include Cassegrain A receiving optical telescope, an optical imaging system and a camera mounted on the telescope for measuring the angle of arrival fluctuation; the data processing system includes a video signal acquisition card, a computer and data processing software. Using the principle of light wave arrival angle fluctuation to measure the atmospheric coherence length on the oblique fixed path, measure the atmospheric coherence length on the oblique fixed path at a limited height between the land observation point and the air balloon. The invention has simple structure, low cost and convenient operation. The method is advanced, novel and conducive to popularization.

Description

technical field [0001] The invention relates to a measuring device and method for atmospheric coherence length, more precisely, it relates to a measuring device and method for atmospheric coherent length on an oblique fixed path. Background technique [0002] The study of laser atmospheric transmission and adaptive optics phase correction requires a quantitative description of the atmospheric turbulent medium. During the upward or downward transmission of the laser in the whole layer of the atmosphere, the atmospheric coherence length provides the comprehensive turbulence intensity on the transmission path, and provides the basic parameters for analyzing the characteristics of the light intensity distribution on the action surface. Therefore, the atmospheric coherence length is an important parameter to characterize the intensity of atmospheric turbulence and to be used in the research of laser atmospheric transmission and adaptive optics. [0003] Before this, the atmosphe...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J9/00G01J9/02
Inventor 汪建业吴毅刘晓春侯再红汪超马志军
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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