二维分形海面参数对极化椭圆参数的影响

Effects of 2-D Sea Fractal Surface Parameters on Polarized Ellipse Parameters

为了研究海面参数对于共极化信号的极化椭圆二参数的影响,利用全极化散射矩阵、Stokes矩阵以及共极化信号公式,通过模拟不同的海面参数发现:极化椭圆方向角漂移仅受合成孔径雷达(SAR)入射角的影响,不受海面粗糙度和海浪主波长的影响;同时还发现只有当海浪主波长发生变化时,椭圆率才会发生较小的改变。

To study effects of 2-D sea fractal parameters on polarized ellipse parameters, full scattering matrix, Stokes matrix and co-polarized signature are used. It is concluded that the shift of orient angle of polarization ellipse is only effected by incident angle of SAR, not effected by sea surface roughness and the fundamental wavelength of ocean wave. Meanwhile, the ellipticity will vary only when the main wavelength of ocean wave changes.