Effect of non-Kolmogorov turbulence on beam spreading in satellite laser communication

Du, Wenhe; Zhu, Houjuan; Liu, Daosen; Zhang, Yao; Cai, Chengjiang; Du, Xiujuan; Ai, Ruibo

doi:10.1007/s10946-012-9302-y

Cited by 8 publications

(3 citation statements)

References 28 publications

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“…The combined influence of Kolmogorov turbulence in troposphere and −5 non-Kolmogorov turbulence in the stratosphere on satellite-Earth laser communication was studied based on a two-layer model of atmospheric turbulence with respect to the satellite-Earth link. The combined effects of tropospheric Kolmogorov atmospheric turbulence and stratosphere −5 non-Kolmogorov atmospheric turbulence on long-term beam spreading [91] and the scintillation index of Gaussian beams were analyzed. On this basis, the effects of combined atmospheric turbulence on the performance of space-ground laser links were studied, and the bit error rate under the OOK system was analyzed [27,92,93].…”

Section: Theoretical Studies Of Combined Influence Of Kolmogorov and ...mentioning

confidence: 99%

A Survey of Structure of Atmospheric Turbulence in Atmosphere and Related Turbulent Effects

Fa-zhi¹,

Du²,

Yuan³

et al. 2021

Atmosphere

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The Earth’s atmosphere is the living environment in which we live and cannot escape. Atmospheric turbulence is a typical random inhomogeneous medium, which causes random fluctuations of both the amplitude and phase of optical wave propagating through it. Currently, it is widely accepted that there exists two kinds of turbulence in the aerosphere: one is Kolmogorov turbulence, and the other is non-Kolmogorov turbulence, which have been confirmed by both increasing experimental evidence and theoretical investigations. The results of atmospheric measurements have shown that the structure of atmospheric turbulence in the Earth’s atmosphere is composed of Kolmogorov turbulence at lower levels and non-Kolmogorov turbulence at higher levels. Since the time of Newton, people began to study optical wave propagation in atmospheric turbulence. In the early stage, optical wave propagation in Kolmogorov atmospheric turbulence was mainly studied and then optical wave propagation in non-Kolmogorov atmospheric turbulence was also studied. After more than half a century of efforts, the study of optical wave propagation in atmospheric turbulence has made great progress, and the theoretical results are also used to guide practical applications. On this basis, we summarize the development status and latest progress of propagation theory in atmospheric turbulence, mainly including propagation theory in conventional Kolmogorov turbulence and one in non-Kolmogorov atmospheric turbulence. In addition, the combined influence of Kolmogorov and non-Kolmogorov turbulence in Earth’s atmosphere on optical wave propagation is also summarized. This timely summary is very necessary and is of great significance for various applications and development in the aerospace field, where the Earth’s atmosphere is one part of many links.

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Section: Theoretical Studies Of Combined Influence Of Kolmogorov and ...mentioning

confidence: 99%

A Survey of Structure of Atmospheric Turbulence in Atmosphere and Related Turbulent Effects

Fa-zhi¹,

Du²,

Yuan³

et al. 2021

Atmosphere

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“…The combined influence of Kolmogorov and non-Kolmogorov turbulence on optical wave has been investigated along a slant or vertical path on the basis of further development of a propagation theory for optical wave in non-Kolmogorov turbulence, including beam spreading, intensity fluctuations, etc. [20,21]. These studies were carried out by establishing a two-layer turbulence model based on the early observations of atmospheric turbulence.…”

Section: Introductionmentioning

confidence: 99%

Wander of a Gaussian-Beam Wave Propagating through Kolmogorov and Non-Kolmogorov Turbulence along Laser-Satellite Communication Uplink

Fa-zhi

Yuan

et al. 2022

Atmosphere

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It is accepted that there exists two kinds of atmospheric turbulence in the Earth’s aerosphere—Kolmogorov and non-Kolmogorov turbulence; therefore, it is important to research their combined impacts on laser-satellite communications. In this paper, the exponential power spectra of refractive-index fluctuations for non-Kolmogorov turbulence in the free troposphere and stratosphere are proposed, respectively. Based on these two spectra, using the Markov approximation, beam wander displacement variances of a Gaussian-beam wave are derived, respectively, which are valid under weak turbulent fluctuations condition. On this basis, using a three-layer altitude-dependent turbulent spectrum model for vertical/slant path, the combined influence of a three-layer atmospheric turbulence on wander of a Gaussian-beam wave as the carrier wave in laser-satellite communication is studied. This three-layer spectrum is more accurate than a two-layer model. Moreover, the variations of beam wander displacement with beam radius, zenith angles, and nominal value of the refractive-index structure parameter on the ground are estimated. The theory of optical wave propagation through non-Kolmogorov atmospheric turbulence is further enriched and a theoretical model of a three-layer atmospheric turbulence beam wander for a satellite-ground laser communication uplink is established.

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“…Beam spreading, one of common effects caused by atmospheric turbulence, would lead finite optical beam to present random deflections while propagating. This phenomenon could be characterized statistically by the longterm spreading radius or other indices [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Long-term spreading of Gaussian beam using generalized modified atmospheric spectrum

Gao

2015

2015 IEEE International Conference on Mechatronics and Automation (ICMA)

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This paper investigates the long-term spreading radius of Gaussian beam propagating through the non-Kolmogorov turbulence along horizontal path. Based on the geometrical optics approximation and the property of Gamma function, the mathematical expression of the long-term spreading radius under the generalized modified atmospheric spectrum is reduced. The final expression could involve the power law value of non-Kolmogorov turbulence, the inner and outer scales, and other important parameters of Gaussian beam, simultaneously. The numerical simulations indicate that the long-term spreading radius is much more sensitive to the inner scale than to the outer scale. Besides, the larger the inner scale the smaller the long-term spreading radius could be.

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Effect of non-Kolmogorov turbulence on beam spreading in satellite laser communication

Cited by 8 publications

References 28 publications

A Survey of Structure of Atmospheric Turbulence in Atmosphere and Related Turbulent Effects

A Survey of Structure of Atmospheric Turbulence in Atmosphere and Related Turbulent Effects

Wander of a Gaussian-Beam Wave Propagating through Kolmogorov and Non-Kolmogorov Turbulence along Laser-Satellite Communication Uplink

Long-term spreading of Gaussian beam using generalized modified atmospheric spectrum

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