ISSN:
1572-817X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract A comparative study has been made of three laser methods of remotely mapping three atmospheric constituents. It has been found that for NO2, SO2 and I2 Differential Absorption and Scattering has a greater range and sensitivity than Laser-Induced Fluorescence, whilst for SO2 both techniques are superior to Raman backscattering. However, the sophistication and the difficulty of interpretation associated with the former system indicates that Laser-Induced Fluorescence might be the most suitable technique in a number of situations. In particular, the Fluorescence technique appears to be well suited for mapping of localized sources of specific molecules in the 100 to 1000 m range. An analysis of the fluorescence return signal expected from a localized source has indicated that above a certain peak concentration a distortion of the returned signal could lead to a misinterpretation of both the range and concentration of the source.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01421178
Permalink
