Quantifying the effects of weather and scintillation on the network performance of the San Diego LaserNet

Isaac I. Kim; Prasanna Adhikari; Marcus Chevitarese; Roopesh Doshi; Joseph Koontz; Ramesh R. Rao

doi:10.1117/12.338976

27 January 1999 Quantifying the effects of weather and scintillation on the network performance of the San Diego LaserNet

Isaac I. Kim, Prasanna Adhikari, Marcus Chevitarese, Roopesh Doshi, Joseph Koontz, Ramesh R. Rao

Author Affiliations +

Proceedings Volume 3532, Optical Wireless Communications; (1999) https://doi.org/10.1117/12.338976
Event: Photonics East (ISAM, VVDC, IEMB), 1998, Boston, MA, United States

Abstract

The San Diego LaserNet is a research platform for studying the effects of weather and scintillation on a computer network that utilizes free-space laser communication (lasercom). The geometry of the present and future configurations of the LaserNet is described. The research goals for the LaserNet are discussed. Atmospheric attenuation from weather like fog and rain, and scintillation can introduce bit and burst errors at the physical layer for networks using lasercom. One of the primary research goals of the LaserNet is to better understand and characterize these burst errors. The effects of these errors at the physical layer on the performance of the higher layers of the Open Systems Interconnect protocol stack are discussed. Data is presented that show how total network throughput at the application layer is affected by increasing the bit error rate (BER) of a lasercom physical layer. Models of lasercom availability in different BER scenarios are shown. Future work will involve correlating measurements of real-time visibility (as well as other meteorological data) to lasercom availability to produce more accurate lasercom availability curves.

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Isaac I. Kim, Prasanna Adhikari, Marcus Chevitarese, Roopesh Doshi, Joseph Koontz, and Ramesh R. Rao "Quantifying the effects of weather and scintillation on the network performance of the San Diego LaserNet", Proc. SPIE 3532, Optical Wireless Communications, (27 January 1999); https://doi.org/10.1117/12.338976

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KEYWORDS

Visibility

Scintillation

Error analysis

Asynchronous transfer mode

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Signal attenuation

Atmospheric physics

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