ASA 129th Meeting - Washington, DC - 1995 May 30 .. Jun 06

2pAO10. Determination of vertical correlation lengths in a channel using SWELLEX-1 thermistor data.

T. Barnard

M. J. Beran

Dept. of Elect. Eng., The Catholic Univ. of America, Cardinal Station, Washington, DC 20064

In order to properly determine the volume scattering in a channel, it is necessary to know the characteristic vertical and horizontal correlation lengths associated with the random index-of-refraction fluctuations. The results we have obtained for characteristic vertical correlation lengths using SWELLEX-1 vertical-array thermistor data are discussed. The data have been analyzed for day-time and night-time observations. In addition, the results are dependent upon averaging times and this effect is discussed. Graphs are given for the standard deviation and normalized cross correlations of the fluctuations, as a function of depth. [The vertical temperature data analyzed in this presentation were produced by NRL Code 7120 and NRAD Code 541 under ONR sponsorship. The data were supplied to us by B. Pasewark of NRL Code 7120. Our analysis was supported by ONR.]