Scintillation measurements during the EOPACE November '96 and August '97 campaigns

Arie N. de Jong; Marco J. J. Roos; Hans Winkel; Peter J. Fritz; Gerrit de Leeuw; Paul A. Frederickson; Kenneth L. Davidson

doi:10.1117/12.330243

3 November 1998 Scintillation measurements during the EOPACE November '96 and August '97 campaigns

Arie N. de Jong, Marco J. J. Roos, Hans Winkel, Peter J. Fritz, Gerrit de Leeuw, Paul A. Frederickson, Kenneth L. Davidson

Author Affiliations +

Proceedings Volume 3433, Propagation and Imaging through the Atmosphere II; (1998) https://doi.org/10.1117/12.330243
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Following scintillation experiments during EOPACE measurement campaigns in the spring of 1996, a new set of experiments was designed in November 1996 and August/September 1997 over San Diego Bay. The main purpose was to further investigate the discrepancy between measured scintillation data and values predicted from turbulence models. One simple way to measure scintillation was the decrease of the signal variations with increasing integration time in the IR transmissometer. In addition near IR and midwave IR imagery was used of static and modulated sources. One of the static sources was mounted on a small boat, sailing out to horizon ranges, as was done earlier in the LAPTEX experiments at Crete. For the detection of the signals of the modulated source a set of receivers was used, providing 2 lines of sight at different altitudes above the water. The results show small differences in scintillation at 2 altitudes. The midwave and near-IR scintillation values show little correlation with C_n² values measured at the midway buoy, confirming the earlier experiments. The impact of atmospheric scintillation of IRST performance is again demonstrated.

Citation Download Citation

Arie N. de Jong, Marco J. J. Roos, Hans Winkel, Peter J. Fritz, Gerrit de Leeuw, Paul A. Frederickson, and Kenneth L. Davidson "Scintillation measurements during the EOPACE November '96 and August '97 campaigns", Proc. SPIE 3433, Propagation and Imaging through the Atmosphere II, (3 November 1998); https://doi.org/10.1117/12.330243

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