Physics – Optics
Scientific paper
Mar 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jopta...1..185c&link_type=abstract
Journal of Optics A: Pure and Applied Optics, Volume 1, Issue 2, pp. 185-191 (1999).
Physics
Optics
Scientific paper
The Institute of Atmospheric Physics is developing a large lidar system for atmospheric remote sensing. It will be installed in two containers, to facilitate its deployment at different locations for measurement runs. The emitted wavelengths are 532 and 355 nm, and are obtained with a Nd:YAG laser. The receiver includes three light collectors to split the large dynamic range of the signal incident on each photodetector. The major receiver, to be used for the observation of the middle atmosphere, is an array of nine 0.5 m diameter telescopes (hence the name `9-eyes'). The advantage of the multiple-mirror technique, with respect to a single-mirror receiver, is mainly in the reduced volume, for the same receiving surface (and hence lower cost and transportability). Moreover, the system architecture allows for flexibility in the use of different observation geometries. The other two light collectors are smaller single telescopes, and will be used for the observation of the lower layers of the atmosphere (troposphere and lower stratosphere). Vertical profiles extending from the boundary layer to the mesopause are expected from this instrument, corresponding to a luminous signal spanning over 13 orders of magnitude. Detection of elastic backscattering yields the aerosol profile and information on clouds (base height, optical and geometrical depth of thin clouds). It also provides the molecular density and temperature above 1464-4258/1/2/012/img7 km. In the final configuration, the system will also be equipped for the detection of the Raman-scattered signal from 1464-4258/1/2/012/img8 and 1464-4258/1/2/012/img9O, to supply the corresponding vertical distributions.
Baldetti Paolo
Congeduti Fernando
Marenco Franco
Vincenti E.
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