Sensitivity of the Lidar ratio to changes in size distribution and index of refraction
Abstract
In order to invert lidar signals to obtain reliable extinction coefficients, sigma, a relationship between sigma and the backscatter coefficient, beta, must be given. These two coefficients are linearly related if the complex index of refraction, m, particle shape size distribution, N, does not change along the path illuminated by the laser beam. This, however, is generally not the case. An extensive Mie computation of the lidar ratio R = beta/sigma and the sensitivity of R to the changes in a parametric space defined by N and m were examined.
 Publication:

In NASA. Langley Research Center 13th International Laser Radar Conference 3 p (SEE N8710263 0135
 Pub Date:
 August 1986
 Bibcode:
 1986lara.confR....E
 Keywords:

 Inversions;
 Optical Radar;
 Refractivity;
 Signal Processing;
 Size Distribution;
 Absorptivity;
 Backscattering;
 Extinction;
 Humidity;
 Linearity;
 Communications and Radar