Multistatic lidar measurements of non-spherical aerosols

Hans D. Hallen; Brandon J. N. Long; D. Adam Hook; Garrett E. Pangle; C. Russekk Philbrick

doi:10.1117/12.2017710

20 May 2013 Multistatic lidar measurements of non-spherical aerosols

Hans D. Hallen, Brandon J. N. Long, D. Adam Hook, Garrett E. Pangle, C. Russekk Philbrick

Proceedings Volume 8731, Laser Radar Technology and Applications XVIII; 87310P (2013) https://doi.org/10.1117/12.2017710
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

Lidar is a powerful tool for measuring the vertical profiles of aerosols in the atmosphere using Rayleigh and Raman lidar techniques. Bistatic lidar can be used to obtain the angular structure of the scattered light. When the aerosols are uniformly distributed, this information can be analyzed to provide particle size distribution information. However, dusts tend to be irregularly shaped particles with varied composition. We investigate the impact of the irregular shape using optical scattering at several wavelengths, scanning electron microscopy, and T-matrix calculations. In particular, we study the rapid loss of Mie scattering resonances as the particle shape departs from spherical. Different size distributions produced by different size-cuts of Arizona Road Dust (ARD) are studied.

Citation Download Citation

Hans D. Hallen, Brandon J. N. Long, D. Adam Hook, Garrett E. Pangle, and C. Russekk Philbrick "Multistatic lidar measurements of non-spherical aerosols", Proc. SPIE 8731, Laser Radar Technology and Applications XVIII, 87310P (20 May 2013); https://doi.org/10.1117/12.2017710

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