The Impact of Various Weather Conditions on Vertical FSO Links

Dautov, Kassen; Kalikulov, Nurzhan; Kızılırmak, Refik Çağlar

doi:10.1109/icaict.2017.8687029

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…For these reasons, FSO communication technology was naturally incorporated with UAV technology in order to establish high-speed optical communication networks in ground-to-air, air-to-ground, and air-to-air situations. However, one of the serious degradations to the performance of UAV-based FSO communications is the effect of perturbative conditions caused by refractive index changes due to temperature inhomogeneities and fluctuations in the pressure dynamics in the air path of the laser beam [12][13][14]. Another important factor is the oscillation of the UAV's wobble during flight which results in a displacement deviation of the pointing error [15].…”

Section: Introductionmentioning

confidence: 99%

Performance of UAV-to-Ground FSO Communications with APD and Pointing Errors

Trung

2021

ASI

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Recently, a combination of unmanned aerial vehicles (UAVs) and free-space optics (FSO) has been investigated as a potential method for high data-rate front-haul communication links. The aim of this work was to address the performance of UAV-to-ground station-based FSO communications in terms of the symbol error rate (SER). The system proposes utilizing subcarrier intensity modulation and an avalanche photo-diode (APD) to combat the joint effects of atmospheric turbulence conditions and pointing error due to the UAV’s fluctuations. In the proposed system model, the FSO transmitter (Tx) is mounted on the UAV flying over the monitoring area, whereas the FSO receiver (Rx) is placed on either the ground or top of a high building. Unlike previous works related to this topic, we considered combined channel parameters that affect the system performance such as transmitted power, link loss, various atmospheric turbulence conditions, pointing error loss, and the total noise at the APD receiver. Numerical results have shown that, for the best system SER performance, the value of an average APD gain at the Rx can be selected, varying from 18 to 30, whereas the equivalent beam waist radius at the Tx should be in a range from 2 to 2.2 cm in order to decrease the effects from the UAV’s fluctuations.

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Section: Introductionmentioning

confidence: 99%

Performance of UAV-to-Ground FSO Communications with APD and Pointing Errors

Trung

2021

ASI

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“…Through the construction of airmobile relay, the fast establishment of a high capacity transmission link between fixed ground terminals is realized. On the other hand, in the application fields such as disaster relief, security, and transportation, UAVs often need to complete high-speed data transmission and instruction issuing with mobile terminals such as vehicles and robots [ 7 , 29 , 37 , 38 , 39 , 40 , 41 , 42 , 43 ]. For this kind of scenario, the mobile characteristics of UAVs and ground terminals must be fully considered, and a solution with high applicability and high availability is proposed to truly release the potential and efficiency of this kind of fusion technology.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the above considerations, the industry proposes to introduce OWC technology into the field of UAVs, to greatly improve the wireless transmission capacity of UAVs by mining rich spectral resources. Based on the original UAV–satellite link, UAVs link, UAV–ground terminal link, and UAV–sea surface link, optical wireless modules and subsystems are integrated into various UAVs and terminals respectively, to build a light-wave-based link with high speed, high security, and orientation [ 25 , 38 , 39 , 40 , 41 , 42 ].…”

Section: Introductionmentioning

confidence: 99%

Frontier Progress of Unmanned Aerial Vehicles Optical Wireless Technologies

Ding

Mei

Chih‐Lin

et al. 2020

Sensors

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With the continuous maturity of unmanned aerial vehicles (UAV) in materials, communications, and other related technologies, the UAV industry has developed rapidly in recent years. In order to cope with the diversified emerging business forms, the explosive growth of the scale of data traffic, number of terminal connections, high reliability, low-latency, and high transmission rate provided by the fifth generation (5G) network will inject new vitality into the development of the UAVs industry. In this paper, optical wireless technology is introduced into the UAV platform, combining theory with practical applications. We explain many research advances and key technologies in the four aspects of “air, space, earth, and sea” to achieve a strong and broadband communication link. This discussion focuses on link modeling, parameter optimization, experimental testing, and the status quo of UAVs in different application scenarios with optical wireless link configurations. At the same time, based on the current situation of UAV optical wireless technology, the technical problems and the research direction in the future are also discussed.

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