Atmospheric channel transfer function estimation from experimental free-space optical communications data

Colin N. Reinhardt; Yasuo Kuga; James A. Ritcey; Akira Ishimaru; Stephen Hammel; Dimitris Tsintikidis

doi:10.1117/12.896226

6 September 2011 Atmospheric channel transfer function estimation from experimental free-space optical communications data

Colin N. Reinhardt, Yasuo Kuga, James A. Ritcey, Akira Ishimaru, Stephen Hammel, Dimitris Tsintikidis

Author Affiliations +

Proceedings Volume 8161, Atmospheric Optics IV: Turbulence and Propagation; 81610I (2011) https://doi.org/10.1117/12.896226
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

The performance of terrestrial free-space optical communications systems is severely impaired by atmospheric aerosol particle distributions where the particle size is on the order of the operating wavelength. For optical and near-infrared wavelengths, fog droplets cause multiple-scattering and absorption effects which rapidly degrade received symbol detection performance as the optical depth parameter increases (visibility decreases). Using a custom free-space optical communications system we measured field data in fog within the optical multiple-scattering regime. We investigate the behavior of the estimated channel transfer function using both real field-test data and simulated propagation data based on field-test conditions. We then compare the channel transfer function estimates against the predictions computed using a radiative-transfer theory model-based approach which we also developed previously for the free-space optical atmospheric channel.

Citation Download Citation

Colin N. Reinhardt, Yasuo Kuga, James A. Ritcey, Akira Ishimaru, Stephen Hammel, and Dimitris Tsintikidis "Atmospheric channel transfer function estimation from experimental free-space optical communications data", Proc. SPIE 8161, Atmospheric Optics IV: Turbulence and Propagation, 81610I (6 September 2011); https://doi.org/10.1117/12.896226

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KEYWORDS

Fiber optic gyroscopes

Radiative transfer

Atmospheric modeling

Atmospheric optics

Free space optics

Data modeling

Channel projecting optics

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