Physics – Optics
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apopt..30.2617c&link_type=abstract
Applied Optics (ISSN 0003-6935), vol. 30, June 20, 1991, p. 2617-2627. Research supported by NASA, U.S. Navy, and Florida High T
Physics
Optics
12
Atmospheric Turbulence, Doppler Radar, Optical Heterodyning, Optical Radar, Radar Measurement, Telescopes, Apertures, Carbon Dioxide Lasers, Carrier To Noise Ratios, Neodymium Lasers, Wave Fronts
Scientific paper
A pulsed Nd:YAG bistatic focused-beam lidar allowing simultaneous heterodyne and direct detection of the same lidar returns has been experimentally employed to ascertain the effect of atmospheric turbulence on heterodyne and direct-detection lidar at 1 micron, by measuring the average carrier-to-noise ratio and statistical fluctuation level in the return signals under various experimental and atmospheric conditions. Atmospheric turbulence is found capable of reducing the lidar receiver's effective telescope aperture and heterodyne detection efficiency. This observed effective-aperture limitation functionally resembles predictions based on the Clifford and Wandzura (1981) heterodyne wavefront detection theory.
Chan Kin Pui
Killinger Dennis K.
Sugimoto Nobuo
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