Apparatus and associated methods relate to determining metrics of water particles in clouds by directing light pulses at a cloud and measuring a peak. a post-peak value and a high-frequency fluctuation of light signals reflected from the cloud. The light pulses include: a first pulse having circularly polarized light of a first wavelength; and a second pulse of' a second wavelength. The reflected light signals include: a first reflected light signal having left-hand circular polarization of the first wavelength; a second reflected light signal having right-hand circular polarization of the first wavelength; and a third reflected light signal of the second wavelength. An extinction coefficient and a backscatter coefficient are determined based on the measured peak and post-peak slopes of the first and second reflected light signals. The measured high-frequency fluctuations of the three reflected light signals can be used to calculate cloud particle sizes.
OPTICALLY DETECTING CLOUD METRICS USING SAMPLED ANALOG MEASUREMENTS OF LIGHT REFLECTION
PARAMETRES RELATIFS AUX NUAGES DETECTES OPTIQUEMENT AU MOYEN DE MESURES D'ECHANTILLONNAGE ANALOGIQUE DE LA REFLEXION LUMINEUSE
21.09.2017
Patent
Elektronische Ressource
Englisch
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