Temperature Profiling of the Atmosphere by Filtered Rayleigh Scattering
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© 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved. This paper discusses calculations related with the backscattered number of photons for a laser shot down at different frequencies from an aircraft. We show profiles for Rayleigh-Brillouin backscattered signals from different heights in atmosphere. A measurement technique is investigated that uses a rubidium vapor filter maintained at different temperatures. The transmission profiles of rubidium vapor filters are studied to maximize the measurement performance. This is further investigated to determine atmospheric temperature, wind velocity and H2O levels from Rayleigh-Brillouin backscattered signals. The width of the Rayleigh-Brillouin backscattered signal is proportional to the temperature from the height of scattering, the Mie scattering peaks from particle scattering are shifted in frequency corresponding to the wind velocity along the direction of laser beam and the tails of the Rayleigh-Brillouin backscattered signals are broadened depending upon the concentration of the H2O in atmosphere.
author list (cited authors)
Rekhy, A., Shneider, M. N., & Miles, R. B.