Physics
Scientific paper
Aug 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.530..303s&link_type=abstract
In: 16th ESA Symposium on European Rocket and Balloon Programmes and Related Research, 2 - 5 June 2003, Sankt Gallen, Switzerlan
Physics
1
Earth Atmosphere: Physics, Earth Atmosphere: Chemistry, Automation, Beam Stabilisation, Ccd Camera, Lidar, Overlap Function
Scientific paper
We have developed an automated beam stabilisation system for the ALOMAR RMR-lidar to guarantee a full overlap of the field-of-view (FOV) of our telescopes and the laser beams even during long measurements and for all operating conditions of the lidar. The technical realisation as well as the image processing involved is presented here. Some examples are given for the excellent performance of the system that reaches a precision better than 10 μrad and allows us to decrease the FOV and thus increase the instrument sensitivity under sunlit conditions. Additionally, we present the results of simulations for the effect of incomplete focusing in the near-field of the telescopes which limits the reduction of the FOV that is feasible without limiting the usable height range of the instrument.
Baumgarten Gerd
Schöch A.
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