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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 6 — Feb. 20, 2002
  • pp: 1156–1162

Analytical differentiation of the differential-absorption-lidar data distorted by noise

Vladimir A. Kovalev  »View Author Affiliations


Applied Optics, Vol. 41, Issue 6, pp. 1156-1162 (2002)
http://dx.doi.org/10.1364/AO.41.001156


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Abstract

A method of analytical differentiation is developed for processing differential absorption lidar (DIAL) data. The method is based on simple analytical transformation of the DIAL on and off signal ratio. The derivatives consequently are found for either individual data points or local zones of the measurement range. The method makes possible the separation of local zones of interest and the separate investigation of these. The smoothing level is established by the selected value of the exponent in a transformation formula rather than by the selection of the resolution range. The method does not require the calculation of local signal increments. This reduces significantly the high-frequency noise in the measured concentration. The method is general and can be used for different experimental data, including inelastic (Raman) lidar data. The processing technique is practical and does not require a determination of the solution for a large set of algebraic equations. It is based on the simple repetition of the same type of calculations with different constants. The method can easily be implemented for practical computations.

© 2002 Optical Society of America

OCIS Codes
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(280.1120) Remote sensing and sensors : Air pollution monitoring
(280.1910) Remote sensing and sensors : DIAL, differential absorption lidar
(280.3640) Remote sensing and sensors : Lidar

History
Original Manuscript: December 6, 2000
Revised Manuscript: October 9, 2001
Published: February 20, 2002

Citation
Vladimir A. Kovalev, "Analytical differentiation of the differential-absorption-lidar data distorted by noise," Appl. Opt. 41, 1156-1162 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-6-1156

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