动态海面的分形模拟及其电磁散射

Fractal modeling and electromagnetic scattering of time varying sea surfaces

文中从海面的功率谱出发，建立了海面的Ｗ ｅｉｅｒｓｔｒａｓｓ 分形函数模型；导出了此模型在Ｋｉｒｃｈｈｏｆｆ散射模式下散射系数的闭合解析表达式；利用该表达式用计算机模拟计算了粗糙海面的电磁散射回波，并用数盒子法提取了其分维数，得到了散射波的分维数与海面参数。

Based on the sea power spectrum a fractal model of equilibrium gravity waves is founded. The analytical closed form formulation of the scattering coefficient is also presented. Then the fractal dimension of the back scattered wave is extracted by the box counting technique, and its relation with the parameters of the sea surface and radar system discussed. The result obtained is useful for target detection on the rough sea surface and remote sensing.