Research of Ship Communication in the Atmospheric Turbulence at Sea

Abstract

With the application of the Rytov method proposed by Tatarskii, the light intensity scintillation probability distribution equation of marine atmospheric turbulence is established. Using the signal detection theory, the relationship between light intensity fluctuation and BER resulting from the marine atmospheric turbulence is deduced. The result shows that 2 n C has obvious diurnal variation, it will reach to the extremum in the afternoon and will show a downward trend with the height increases in the coastal area with its minimum around sunrise period. With the increase of 2 n C , and the decrease of transmission range, when 3 / 2 15 2 10 3     m C n , the effective transmission range is m 2900 , and allows a s 95 adjustment time to APT（ acquisition 、pointing and tracking） system; The system adjustment time will increase as the 2 n C value decreases and the wavelength increases.