8 November 2012 Characteristics of long-range scintillation data over maritime coastal areas
Author Affiliations +
Abstract
During the FATMOSE trial, day and night (24/7) scintillation data were collected for point sources at a range of 15.7 km. We used simultaneously our MSRT transmissometer (in scintillation mode) and a high resolution imager for the scintillation measurement. Because of the large source and receiver aperture, corrections were made for the effect of pupil averaging, determined by the transverse coherence length. In the paper examples are shown of scintillation spectra in comparison with Kolmogorov's -5/3 power law and of the log-intensity character of the scintillation. Attention is spent on the saturation effect, occurring in cases of small apertures. By using the multiband scintillation data, we were able to investigate the color dependence of scintillation, of which examples are shown. Measured scintillation data are also compared with predictions from our marine boundary layer based TARMOS model. It appears that the performance of these predictions is hampered by the inhomogeneity of the weather parameters along the path. In the paper several data series out of the large amount of available data are presented, covering a few consecutive days of data with examples of extremely low scintillation levels, probably occurring in cases of near-zero Air-Sea Temperature Difference along the total pathlength.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Arie N de Jong, Piet B. W. Schwering, Willem H. Gunter, George Vrahimis, Faith J. October, "Characteristics of long-range scintillation data over maritime coastal areas", Proc. SPIE 8535, Optics in Atmospheric Propagation and Adaptive Systems XV, 853504 (8 November 2012); doi: 10.1117/12.970566; https://doi.org/10.1117/12.970566
PROCEEDINGS
15 PAGES


SHARE
Back to Top