Variable antennas positions solution to reduce pointing errors due to wind speed and temperature coupled effects during free space optical link using matrix Rician pointing error model

• Autorzy: Teuma Mbezi Michel , Eke Samuel , Som Idelette Hermine Judith , Mouangue Ruben Martin

Identyfikatory

DOI

10.37190/oa230305

• Języki publikacji: EN

Abstrakty

EN

Pointing errors (PE) during free space optical (FSO) transmission can be caused by laser beam wander due to thermal and wind dynamic instability. The aim of this work is to study the coupled effects of temperature and wind speed on PE using matrix Rician pointing error (MRPE) model; then show how variable antennas height can reduce PE due to wind speed and temperature coupled effects. To achieve this purposes, average PE expression was established using MRPE model. Then considering a Gaussian beam wave and Monin–Obukhov similarity functions for the structure parameters of temperature, explicit relationship was established between average PE, temperature and wind speed. It comes out of this study that under dynamic turbulence, one can appropriately modify temperature to reduce PE due to dynamic instability and reciprocally. Depending on turbulence large cells or frozen turbulence eddies distribution, PE can be reduced by appropriately modified antennas height or the distance between transmitter and receiver. That is why this work suggests to install variable or dynamic antennas (rather than fixed ones) which could intelligently modify its positions according to laser beam wander created by atmospheric turbulence.

Słowa kluczowe

EN

atmospheric turbulence; pointing error; free space optical transmission; Rician pointing error model

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2023
• Tom: Vol. 53, nr 3
• Strony: 393--406
• Opis fizyczny: Bibliogr. 46 poz., rys.

Twórcy

autor

Teuma Mbezi Michel

• National Higher Polytechnic School of Douala, University of Douala, P.O. Box 2701, Douala, Cameroon

autor

Eke Samuel

• National Higher Polytechnic School of Douala, University of Douala, P.O. Box 2701, Douala, Cameroon

autor

Som Idelette Hermine Judith

• National Higher Polytechnic School of Douala, University of Douala, P.O. Box 2701, Douala, Cameroon

autor

Mouangue Ruben Martin

• National Higher Polytechnic School of Douala, University of Douala, P.O. Box 2701, Douala, Cameroon

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