Free-Space Optical Communications for Next-generation Military Networks

Juarez, Juan C.; Dwivedi, Anurag; Mammons, A.R.; Jones, Steven; Weerackody, V.; Nichols, Robert A.

doi:10.1109/mcom.2006.248164

Cited by 169 publications

(66 citation statements)

References 9 publications

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“…Properties of an atmospheric path are random in terms of space and time, which makes FSO link depend on random factors such as geometrical and climate changes. In addition to unpredictable environmental changes that include haze, temperature shifts, fog, rain and clouds [11] [10]. They impose attenuations on propagated signals and presented as "losses".…”

Section: Challenges and Mitigation Techniquesmentioning

confidence: 99%

FSO G2T communications in tropical climate: An overview

Mabrouk

Abdullah

2017

AIP Conference Proceedings

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Abstract.As the demand for high-speed broadband data access on trains increases, so does the interest in finding solutions to satisfy this demand. This paper aims to provide an overview of Free Space Optical (FSO) Link for Ground-to-Train Communication(G2T). It focuses on tropical climate, with illustrations of the technology Challenges, and opportunities. Railway communication challenges are discussed with recent research work. Additionally, FSO G2T modeling techniques for various track configurations are briefly discussed and summarized.

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Section: Challenges and Mitigation Techniquesmentioning

confidence: 99%

FSO G2T communications in tropical climate: An overview

Mabrouk

Abdullah

2017

AIP Conference Proceedings

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“…Free Space Optics (FSO) for data transmission has the potential to produce a very high capacity, secure and robust communication method [1][2][3]. Work has so far largely focused on the propagation of Gaussian beams.…”

Section: Introductionmentioning

confidence: 99%

Long-distance Bessel beam propagation through Kolmogorov turbulence

et al. 2015

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“…Long-and short-distance delivery of highly defined light beams has played a central role in a variety of applications, such as free-space-optics-based communications, laser-assisted welding and surgery, and military/leisure training systems [1][2][3]. In particular, cost effective military training systems, such as multiple integrated laser engagement system (MILES), are known to require a long-reach infrared (IR) laser transmitter, which acts as a projectile in simulated combat [4].…”

Section: Introductionmentioning

confidence: 99%

Compact Infrared/Visible Laser Transmitter Featuring an Extended Detectable Trajectory

Kim¹,

Lee²,

Lee³

2012

Journal of the Optical Society of Korea

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A miniaturized laser beam transmitter, in which a visible laser module at λ=650 nm is precisely stacked upon an infrared (IR) module at λ=905 nm, has been proposed and constructed to provide an IR collimated beam in conjunction with a collinear monitoring visible beam. In particular, the IR beam is selectively dispersed through a perforated sheet diffuser, so as to create a rapidly diverging close-range beam in addition to a highly defined long-range beam simultaneously. The complementary close-range beam plays a role in mitigating the blind region in the vicinity of the transmitter, which is inevitably missed by the main long-range beam, thereby uniformly extending the transmitter's effective trajectory that is sensed by a receiver. The proposed transmitter was designed through numerical simulations and then fabricated by incorporating a diffuser sheet, perforated with an aperture of 2 mm. For the manufactured transmitter, the IR long-range beam was observed to have divergences of ~2.3 and 1.6 mrad in the fast and slow axes, respectively, while the short-range beam yielded a divergence of ~24 mrad. The angular alignment between the long-range IR and visible beams was as accurate as ~0.5 mrad. According to an outdoor feasibility test involving a receiver, the combination of the IR long-and short-range beams was proven to achieve a nearly uniform trajectory over a distance ranging up to ~600 m, with an average detectable cross-section of ~60×80 cm 2 .

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Free-Space Optical Communications for Next-generation Military Networks

Cited by 169 publications

References 9 publications

FSO G2T communications in tropical climate: An overview

FSO G2T communications in tropical climate: An overview

Long-distance Bessel beam propagation through Kolmogorov turbulence

Compact Infrared/Visible Laser Transmitter Featuring an Extended Detectable Trajectory

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