In this paper, experimental results related to the received-power fluctuations in a LEO satellite-to-ground laser-communication link using the Small Optical TrAnsponder (SOTA) are presented. The data is compared to the theoretical expectations based on the Hufnagel-Valley model. The discrepancies in the results are discussed by spectrum analysis and by a comparison with the Differential Image Motion Monitor (DIMM) measurements of the Fried parameter. Finally, the experimentally-derived coherence time is shown and discussed.
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Kolev et al. (2017) studied this question.
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