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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 36, Iss. 27 — Sep. 20, 1997
  • pp: 6857–6863

Correction scheme for experimental biases in differential absorption lidar tropospheric ozone measurements based on the analysis of shot per shot data samples

Luca Fiorani, Bertrand Calpini, Laurent Jaquet, Hubert Van den Bergh, and Eric Durieux  »View Author Affiliations


Applied Optics, Vol. 36, Issue 27, pp. 6857-6863 (1997)
http://dx.doi.org/10.1364/AO.36.006857


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Abstract

From lidar signals detected with a shot per shot differential absorption lidar instrument tuned for tropospheric ozone measurements and recording each individual return, we reconstruct histograms of their sampled values for each channel of our digitizers. The analysis of their shape permits the correction of our measurements for experimental biases. In particular, a negative correlation is found between the skew of the histograms and the intensity of the backscattered light. The skew comes from a tail at high sampled values, interpreted as due to a raise of the relative contribution to the signal of a signal-induced noise when this intensity diminishes. By fitting a Gaussian function to the histograms without considering their tails, we calculate average signals unbiased by the corresponding noise. This approach allows us to increase the range of our ozone profiles, up to as much as double it in some cases.

© 1997 Optical Society of America

History
Original Manuscript: July 2, 1996
Revised Manuscript: December 23, 1996
Published: September 20, 1997

Citation
Luca Fiorani, Bertrand Calpini, Laurent Jaquet, Hubert Van den Bergh, and Eric Durieux, "Correction scheme for experimental biases in differential absorption lidar tropospheric ozone measurements based on the analysis of shot per shot data samples," Appl. Opt. 36, 6857-6863 (1997)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-27-6857


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