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6 September 2011 Atmospheric channel transfer function estimation from experimental free-space optical communications data
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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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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