摘要
基于驻相近似下得到的考虑遮蔽效应时的粗糙面散射一、二阶基尔霍夫公式,研究了满足半经验海谱分布的二维介质粗糙海面的电磁散射,分析了海面散射出现后向增强效应的条件,计算了不同极化状态的散射系数角分布,并进行了比较,详细讨论了二阶散射系数角分布及后向增强效应随风速、入射频率和入射角的变化规律.
Based on the formulae of the first-order and second-order Kirchhoff approximation of rough surface scattering obtained from the stationary phase method with consideration of the shadowing effect, the electromagnetic scattering of the two-dimensional rough sea surface with the semi-empirical sea spectrum was investigated. The condition of the baekscattering enhancement oceuring for the sea scattering was analyzed. The angular distribution of the scattering coefficient was calculated and compared for different polarizations. The dependence of the angular distribution of the second-order scattering coefficient and the backseattering enhancement on the wind speed, the incident frequency and the incident angle were discussed in details.
出处
《信阳师范学院学报（自然科学版）》
CAS
2010年第2期219-226,共8页
Journal of Xinyang Normal University(Natural Science Edition)
基金
西安石油大学科技创新基金项目(Z07078)
关键词
驻留相位法
遮蔽函数
后向散射增强效应
海谱
the stationary phase method
shadowing function
backscattering enhancement
sea spectrum
