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Proceedings Paper

Stability of an iterative multiwavelength lidar scheme
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Paper Abstract

Multiwavelength elastic lidar is often used to probe the aerosol profiles of the atmosphere. Normally, the atmosphere is considered homogeneous and an a-priori aerosol ratio is given for each wavelength channel which is then processed independently. However, it is clear that the multiwavelength retrieved backscatter profiles should contain information that can be used to estimate particle size distribution which may provide a new estimate to range dependent aerosol ratio profiles which can be repeated until convergence. In this paper, we illustrate the basic idea of using multiwavelength data using a two wavelength lidar to obtain local information on the lidar ratio which can be used to improve lidar profiling in homogeneous atmospheres and show that a key feature of any scheme is the monotonic dependence between the optical data ratio and the distribution parameter. In addition, we extend the approach to a prototypical Nd:YAG three wavelength (355, 532, 1064 nm) lidar arrangement and show that while an iterative lidar procedure can be used to extract range dependent profiles, imprecision in the inversion procedure as well as error propagation of the lidar back integration can hamper convergence.

Paper Details

Date Published: 23 December 2003
PDF: 9 pages
Proc. SPIE 5154, Lidar Remote Sensing for Environmental Monitoring IV, (23 December 2003); doi: 10.1117/12.509354
Show Author Affiliations
Marco Vargas, CUNY/City College (United States)
Barry Gross, CUNY/City College (United States)
Fred Moshary, CUNY/City College (United States)
Samir Ahmed, CUNY/City College (United States)

Published in SPIE Proceedings Vol. 5154:
Lidar Remote Sensing for Environmental Monitoring IV
Upendra N. Singh, Editor(s)

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