Atmospheric transmittance measurements of CO2 and near-IR laser radiation over 8.6 km

Karin Weiss-Wrana; Anton Kohnle; Dieter H. Hoehn

doi:10.1117/12.137933

1 August 1992 Atmospheric transmittance measurements of CO₂ and near IR laser radiation over 8.6 km

Karin Weiss-Wrana, Anton Kohnle, Dieter H. Hoehn

Proceedings Volume 1688, Atmospheric Propagation and Remote Sensing; (1992) https://doi.org/10.1117/12.137933
Event: Aerospace Sensing, 1992, Orlando, FL, United States

Abstract

A long-range laser transmissometer to measure atmospheric extinction at different laser wavelengths simultaneously from near to thermal infrared, (1.06 and 10.6 micron) was designed, constructed, and operated under different atmospheric conditions over a distance of 8.6 km in hilly terrain near Tuebingen, Germany. Beam extinction was obtained by measuring the ratio of the total transmitted laser radiation to the total received radiation as collected by a mirror and focused onto a pyroelectrical detector array. Measured values of Nd:YAG and CO2 laser extinction are compared with model predictions (FASCODE 3P) based on simultaneously measured meteorological data as model input parameters. The agreement between measurement and calculation is better than expected. The corresponding extinction coefficients cover the range 0.05/km to 0.17/km for Nd:YAG laser radiation and 0.07/km to 0.25/km for CO2 laser radiation.

Citation Download Citation

Karin Weiss-Wrana, Anton Kohnle, and Dieter H. Hoehn "Atmospheric transmittance measurements of CO₂ and near IR laser radiation over 8.6 km", Proc. SPIE 1688, Atmospheric Propagation and Remote Sensing, (1 August 1992); https://doi.org/10.1117/12.137933

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