S. Sayama et M. Sekine, Weibull distribution and K-distribution of sea clutter observed by X-band radar and analyzed by AIC, IEICE TR CO, E83B(9), 2000, pp. 1978-1982
In order to observe temporal distribution of sea clutter, radar echoes were
taken from high sea state 7 at a fixed azimuth angle of 317 degrees. It is
shown that the sea-clutter amplitudes obey the Weibull distribution at a g
razing angle of 3.9 degrees, and obey both the Weibull distribution and K-d
istribution at grazing angles of 7.5 degrees and 61.4 degrees. As the grazi
ng angle increases, the shape parameters of Weibull distribution and K-dist
ribution increase with both the distributions themselves tending to be clos
er to the Rayleigh distribution.