The simulation of statistical characteristics of dense chaff clouds

The probability density functions (PDF) of the elements in the backscattering matrix of dense chaff clouds with small volume are studied through simulation in this paper. It is found that the phase of the co-polarization elements satisfies bell shaped distribution. And the amplitude of the co-polarization elements satisfies Rice distribution. The cross-polarization elements satisfy the same kind distribution with that of the sparse. Six computing examples of chaff clouds with different sizes, shapes, and densities are given.