Abstract: A simple technique for extracting the extinction and backscatter coefficients from lidar returns signals is presented. The technique uses lidar signals from two different wavelengths taken with the same lidar system, and is based on the assumptions that the extinction coefficient at one wavelength is related to the extinction at the other wavelength, likewise for the backscatter coefficients. The technique is tested on data generated by the Nd:YAG laser 2nd (532 nm) and 3rd (355 nm) harmonics. The relationship between extinction coefficients was obtained by a power law fitting to data generated by the UVTRAN model. For the backscatter coefficient a simple proportionality law is assumed. !5
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