海面正置长方体目标复合散射极化特征

Polarization signature of composite scattering from cuboidal target on sea surface

为分析海面上长方体目标的极化特征,通过极化特征图讨论了长方体目标尺寸参数和海面风速、风向对于复合极化散射的影响.计算结果显示入射角和目标尺寸足够大的情况下,二次散射更为突出,对应的极化特征图具有明显的二面角特点.侧风将会改变极化特征图的对称性.

In order to investigate the polarization features of a cubical target on sea surface,the influence of target size,wind speed and wind direction to electromagnetic polarimetric composite backscattering is discussed with polarization signatures.The numerical results show that the secondary scattering is so noticeable that the polarization signature have a remarkable property of a dihedral,when both the incident angle and the sizes of the target are large enough.The polarization signature shows unsymmetry for the cross-wind.