Interest in the higher-order moments of irradiance scintillation draws attention to extremely large excursions of irradiance. Observation of such excursions has many experimental difficulties involving receiver dynamic range, aperture size, and bandwidth as well as sufficiency of number of samples, surface reflections (mirages), and source divergence. We discuss these difficulties as well as techniques to mitigate them. Visual biases exist in graphical presentations of moments and probability-density functions; we make suggestions for effective graphical interpretation of data. We recommend measuring both the refractive-index structure parameter and the inner scale of turbulence simultaneously with irradiance statistics.
© 1988 Optical Society of AmericaFull Article | PDF Article
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