Wander of a Gaussian-Beam Wave Propagating through Kolmogorov and Non-Kolmogorov Turbulence along Laser-Satellite Communication Uplink
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 f...
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| Format: | Article |
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MDPI AG
2022-01-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/13/2/162 |
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| author | Fazhi Wang Wenhe Du Qi Yuan Daosen Liu Shuang Feng |
| author_facet | Fazhi Wang Wenhe Du Qi Yuan Daosen Liu Shuang Feng |
| author_sort | Fazhi Wang |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-09T22:39:08Z |
| format | Article |
| id | doaj.art-de93b33fe29e4726854c26c0f64d4434 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-09T22:39:08Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-de93b33fe29e4726854c26c0f64d44342023-11-23T18:43:13ZengMDPI AGAtmosphere2073-44332022-01-0113216210.3390/atmos13020162Wander of a Gaussian-Beam Wave Propagating through Kolmogorov and Non-Kolmogorov Turbulence along Laser-Satellite Communication UplinkFazhi Wang0Wenhe Du1Qi Yuan2Daosen Liu3Shuang Feng4College of Telecommunication and Electronic Engineering, Qiqihar University, Qiqihar 161006, ChinaCollege of Telecommunication and Electronic Engineering, Qiqihar University, Qiqihar 161006, ChinaCollege of Telecommunication and Electronic Engineering, Qiqihar University, Qiqihar 161006, ChinaCollege of Telecommunication and Electronic Engineering, Qiqihar University, Qiqihar 161006, ChinaCollege of Telecommunication and Electronic Engineering, Qiqihar University, Qiqihar 161006, ChinaIt 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.https://www.mdpi.com/2073-4433/13/2/162satellite laser communicationatmospheric opticsnon-Kolmogorov turbulenceKolmogorov turbulencebeam wander |
| spellingShingle | Fazhi Wang Wenhe Du Qi Yuan Daosen Liu Shuang Feng Wander of a Gaussian-Beam Wave Propagating through Kolmogorov and Non-Kolmogorov Turbulence along Laser-Satellite Communication Uplink Atmosphere satellite laser communication atmospheric optics non-Kolmogorov turbulence Kolmogorov turbulence beam wander |
| title | Wander of a Gaussian-Beam Wave Propagating through Kolmogorov and Non-Kolmogorov Turbulence along Laser-Satellite Communication Uplink |
| title_full | Wander of a Gaussian-Beam Wave Propagating through Kolmogorov and Non-Kolmogorov Turbulence along Laser-Satellite Communication Uplink |
| title_fullStr | Wander of a Gaussian-Beam Wave Propagating through Kolmogorov and Non-Kolmogorov Turbulence along Laser-Satellite Communication Uplink |
| title_full_unstemmed | Wander of a Gaussian-Beam Wave Propagating through Kolmogorov and Non-Kolmogorov Turbulence along Laser-Satellite Communication Uplink |
| title_short | Wander of a Gaussian-Beam Wave Propagating through Kolmogorov and Non-Kolmogorov Turbulence along Laser-Satellite Communication Uplink |
| title_sort | wander of a gaussian beam wave propagating through kolmogorov and non kolmogorov turbulence along laser satellite communication uplink |
| topic | satellite laser communication atmospheric optics non-Kolmogorov turbulence Kolmogorov turbulence beam wander |
| url | https://www.mdpi.com/2073-4433/13/2/162 |
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