Physics – Optics
Scientific paper
Oct 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spie.3127..103d&link_type=abstract
Proc. SPIE Vol. 3127, p. 103-115, Application of Lidar to Current Atmospheric Topics II, Arthur J. Sedlacek; Kenneth W. Fischer;
Physics
Optics
Scientific paper
NASA Langley has an active water vapor differential absorption lidar program taking measurements from both C-130 and ER-2 aircraft. A research effort has started to increase the signal-to-noise ratio in the DIAL receiver by 1) evaluating new very low noise avalanche photo didoes (APD), 2) designing an optics system that will focus the return light signal to the APD efficiently and 3) constructing a 10-MHz waveform digitizer board that will be small enough to be placed at the APD and telescope. With these advances we anticipate improving the signal-to-noise ratio by a factor of ten over the current receiver system.
Browell Edward V.
de Young Russell J.
Ellis Kenneth S.
Halama Gary E.
Luck William S.
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