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논문 기본 정보

자료유형
학술저널
저자정보
Fahua Shen (Yancheng Teachers University) Zhifeng Shu (Nanjing University of Information Science & Technology) Jihui Dong (Southwest Institute of Technical Physics) Liangliang Yang (Yancheng Teachers University) Chengyun Zhu (Yancheng Teachers University) Hua Xu (Yancheng Teachers University)
저널정보
한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.9 No.2
발행연도
2025.4
수록면
108 - 119 (12page)

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초록· 키워드

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Since aerosols are rare above the boundary layer, Mie Doppler lidar can generally only detect lowaltitude wind speed. Therefore, for wind-field detection at altitudes of 0.1–20 ㎞ a molecular Doppler lidar technology, using a fixed air-gap dual Fabry-Perot etalon as the frequency discriminator and a tunable ultra-violet (UV) laser as the emission source, is proposed. The Rayleigh-Brillouin scattering spectrum of atmospheric molecules is described by a three-Gaussian model, and the parameters of the dual Fabry-Perot etalon are optimized. Simulation results show that in the absence of dust and clouds, the inversion deviation of radial wind speed is less than 0.08 ㎧ within the radial-wind-speed dynamic range of ±10 ㎧ at 100 m of altitude; The deviation is less than 0.1 m/s within the radial-wind-speed dynamic range of ±50 ㎧ above 1.2 km of altitude. By using a 355-㎚ ultraviolet laser with a pulse energy of 400 mJ and repetition frequency of 50 ㎐, and a telescope with a 300-㎜ aperture, vertical resolution of 26 m @ 0.06–10㎞ and 78 m @ 10–20 ㎞, and temporal resolution of 1 min, the system has an allday radial-wind-speed measurement error of less than 1.8 ㎧ between 0.1 to 20 ㎞ of altitude, and a radial-wind-speed error less than 0.54 ㎧ at 10 km of altitude.

목차

Ⅰ. INTRODUCTION
Ⅱ. DETECTION PRINCIPLE
Ⅲ. PARAMETER OPTIMIZATION OF THE DUAL FABRY-PEROT ETALON
Ⅳ. OVERALL STRUCTURE AND PARAMETERS OF THE SYSTEM
Ⅴ. SIMULATION AND ANALYSIS OF SYSTEM PERFORMANCE
Ⅵ. CONCLUSION
REFERENCES

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