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Proceedings Paper

Comparison of near-surface bulk and scintillation C2n measurements during EOPACE
Author(s): Paul A. Frederickson; Kenneth L. Davidson; Carl R. Zeisse; Charles S. Bendall
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Paper Abstract

During the Electro-Optical Propagation Assessment in a Coastal Environment (EOPACE) experiment of May-June 1998, IR scintillation measurements were obtained along a 7 km path over San Diego Bay. Simultaneous meteorological measurement were obtained from a buoy located at the midpoint of the transmission path. Bulk estimates of the refractive index structure parameter, Cn2 were computed from the buoy data and compared with scintillation-derived Cn2 values. The bulk Cn2 estimates agreed well with the scintillation measurements in unstable conditions. The agreement between the two methods was poor for near-neutral and stable conditions. In particular, when the air-sea temperature difference has small positive values the bulk model predicts the vertical refractive index gradient approaches zero, resulting in rapid decrease in bulk Cn2 estimates. These predicted decreases in Cn2 were not observed in the path-averaged scintillation measurements.

Paper Details

Date Published: 3 November 1998
PDF: 12 pages
Proc. SPIE 3433, Propagation and Imaging through the Atmosphere II, (3 November 1998); doi: 10.1117/12.330244
Show Author Affiliations
Paul A. Frederickson, Naval Postgraduate School (United States)
Kenneth L. Davidson, Naval Postgraduate School (United States)
Carl R. Zeisse, Space and Naval Warfare Systems Ctr., San Diego (United States)
Charles S. Bendall, Space and Naval Warfare Systems Ctr., San Diego (United States)


Published in SPIE Proceedings Vol. 3433:
Propagation and Imaging through the Atmosphere II
Luc R. Bissonnette, Editor(s)

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