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Proceedings Paper

Long-path method: computer code LPM
Author(s): Konstantin M. Firsov; Mikhail Yu. Kataev; Artur A. Mitsel; Igor V. Ptashnik; Vladimir V. Zuev
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Paper Abstract

The dialog program LPM (long-path method) is intended for imitative modeling of the concentration gas analysis (H2O, CO2, O3, NH3, C2H4) with the path double-wave gas analyzer, equipped with two tunable CO2-lasers. Modeling is designed for four laser systems using the isotopes of CO2. While modeling the program provides: 1) the calculation of transmittance for a sounding path at wavelengths 'on-line' and 'off-line'; 2) the calculation of atmospheric signals at wavelengths 'on-line' and 'off-line'; 3) the distortion of a signal with a random number for imitation of measuring noise; 4) the calculation of gas concentration from the inverse problem while imitating the sounding of a single gas; 5) the calculation of concentration of several gases (up to five gases) by using the simultaneous signal processing for several pairs of wavelengths (imitation of sounding of several gases). In addition, the program determines: i) optimal pairs of wavelengths; ii) the gas concentration reconstruction error from the sounding data, including the measuring error and the systematic error.

Paper Details

Date Published: 15 September 1995
PDF: 9 pages
Proc. SPIE 2505, Lidar and Atmospheric Sensing, (15 September 1995); doi: 10.1117/12.219643
Show Author Affiliations
Konstantin M. Firsov, Institute of Atmospheric Optics (Russia)
Mikhail Yu. Kataev, Institute of Atmospheric Optics (Russia)
Artur A. Mitsel, Institute of Atmospheric Optics (Russia)
Igor V. Ptashnik, Institute of Atmospheric Optics (Russia)
Vladimir V. Zuev, Institute of Atmospheric Optics (Russia)

Published in SPIE Proceedings Vol. 2505:
Lidar and Atmospheric Sensing
Richard J. Becherer, Editor(s)

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