CO2 lidar system for the detection of atmospheric pollutants and comparisons of the measurement results with those of a passive remote sensing system: an FTIR spectrometer

Timo Stuffler; Volker Klein; M. Resch

doi:10.1117/12.219654

15 September 1995 CO₂ lidar system for the detection of atmospheric pollutants and comparisons of the measurement results with those of a passive remote sensing system: an FTIR spectrometer

Timo Stuffler, Volker Klein, M. Resch

Author Affiliations +

Proceedings Volume 2505, Lidar and Atmospheric Sensing; (1995) https://doi.org/10.1117/12.219654
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany

Abstract

The sensitivity of a CO₂-lidar system using the DAS-technique is based on the smallness of two different errors: the DAS measurement error and the error in the absorption coefficient. The first one is given by the system stability and the influence of the atmosphere on the return signal of the lidar, meanwhile the spectral characteristic of the laser radiation and the accuracy of the measurement set up are responsible for the error in the detection limits. The combination of both errors is responsible for the total measurement accuracy. This is important for the comparison of the measurement results with those of a FTIR-spectrometer. Due to a difference in the measurement principle, the spectrometer offers the advantage of a wide, continuous coverage of the spectrum (2-15 micrometers - depending on the used detector), but the usable range is restricted to a maximum distance of about 500m. This tunable lidar- system however can be used for measurement distances of up to 5 km, but is limited on a nubmer of discrete wavelengths.

Citation Download Citation

Timo Stuffler, Volker Klein, and M. Resch "CO₂ lidar system for the detection of atmospheric pollutants and comparisons of the measurement results with those of a passive remote sensing system: an FTIR spectrometer", Proc. SPIE 2505, Lidar and Atmospheric Sensing, (15 September 1995); https://doi.org/10.1117/12.219654

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