Scattering from experimental sea clutter data [3] is usually non-Gaussian and several distributions used are lognormal [4], Weibull [5] and K distributions [6]. As explained in [1] in time domain, there is no theoretical evidence to suggest that sea clutter should follow any of these distributions but the K distribution is the most popular distributions because of its ability to accurately model the temporal and spatial correlations and the addition of thermal noise. The compound form of the K distribution assumes that the clutter plus noise intensity, z, may be described
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