Turbulent scintillation lidar for acquiring atmospheric turbulence information

Chaolong, 崔朝龙 Cui; Honghua, 黄宏华 Huang; Haiping, 梅海平 Mei; Wenyue, 朱文越 Zhu; Ruizhong, 饶瑞中 Rao

doi:10.3788/hplpb20132505.1091

Cited by 7 publications

(1 citation statement)

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“…Atmospheric coherence length represents the diffraction limit of light wave propagation through atmospheric turbulence, which characterises the integrated optical turbulence intensity in the atmospheric transmission path of light waves, Measurements of atmospheric coherence lengths are important for astronomical site selection, ground-based astronomical observations, laser atmospheric transmission and laser engineering applications [1][2][3] . At present, the measurement methods of atmospheric coherence length are mainly divided into passive measurement methods and active measurement methods, with the former using stars as light sources, which are easily affected by weather and other factors in practical applications [4] .…”

Section: Introductionmentioning

confidence: 99%

Design and control techniques of a differential light column lidar

li,

cui,

zhu

et al. 2024

Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Detector Technologies

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Atmospheric coherence length represents the diffraction limit of light wave propagation through atmospheric turbulence, which characterises the integrated optical turbulence intensity in the atmospheric transmission path of light waves, and the measurement of atmospheric coherence length is of great significance. A light column turbulence lidar for atmospheric coherence length measurements has been developed based on differential image motion method and oblique range imaging for laser light column, which can obtain atmospheric coherence length profiles at a certain height in the vertical direction with a high spatial resolution, and can overcome the problem of non-active turbulence measurement devices that are not able to measure without suitable beacons or beacons that are occluded. The basic principle and system structure of differential light column lidar are introduced, and the whole lidar system can be divided into laser transmitting unit, signal receiving unit and control unit. The laser transmitter unit adjusts the direction of laser emission through the reflector, CCD camera, diaphragm and stepper motor. The signal receiving unit receives the beam backward scattering signals through the telescope and CCD camera to obtain the light column image, and adjusts the position of the CCD camera through the stepper motor to achieve focusing. The control unit receives and sends signals to control the operation of the entire system. A preliminary detection experiment was carried out with this lidar, and the height distribution profile of atmospheric coherence length was obtained. The variation trend of atmospheric coherence length with altitude is consistent with the theoretical trend, which verified the functionality of the lidar system.

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Section: Introductionmentioning

confidence: 99%

Design and control techniques of a differential light column lidar

li,

cui,

zhu

et al. 2024

Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Detector Technologies

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Science and technology of atmospheric effects on optical engineering: Progress in 3rd quinquennium of 21st century

Rao

2017

Sci. China Technol. Sci.

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Prediction model of atmospheric refractive index structure parameter in coastal area

Wang

et al. 2015

Journal of Modern Optics

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2015): Prediction model of atmospheric refractive index structure parameter in coastal area, Journal of Modern Optics,In this paper, we focus on the prediction of atmospheric refractive index structure parameter (C 2 n ) in coastal area using the routine meteorological parameters. Based on the micrometeorology, macrometeorology and Monin-Obukhov similarity theory, three modified prediction models of C 2 n are presented in combination with the long-term observation data of C 2 n and meteorological parameters in coastal city, respectively. For different weather, the applicable cases of three C 2 n prediction models are comparatively analysed and their applicable effects are comprehensively evaluated. The results indicate that the modified micrometeorology model of C 2 n shows better applicability for overcast sky, the offshore macrometeorology model of C 2 n displays better predictability for sunny day and the offshore Thiermann model provides better availability for overcast sky, cloudy day, overcast to sunny or sunny to overcast day.

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Turbulent scintillation lidar for acquiring atmospheric turbulence information

Cited by 7 publications

References 0 publications

Design and control techniques of a differential light column lidar

Design and control techniques of a differential light column lidar

Science and technology of atmospheric effects on optical engineering: Progress in 3rd quinquennium of 21st century

Prediction model of atmospheric refractive index structure parameter in coastal area

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