Proceedings of COAT-2019 Workshop Communications and Observations through Atmospheric Turbulence : characterization and mitigation COAT-2019-workshop (Communications and Observations through Atmospheric Turbulence: characterization and mitigation) COAT-2019-workshop (Communications and Observations through Atmospheric Turbulence: characterization and mitigation), ONERA, Dec 2019, Châtillon, France. ⟨10.34693/COAT2019-S5-001⟩