摘要
采用小斜率近似方法研究二维高斯和非高斯粗糙海面后向电磁散射问题,给出自相关函数、偏斜度函数和偏峰度函数的计算公式和数值结果,得到小斜率近似下满足高斯和非高斯分布的二维海面后向电磁散射截面计算公式.应用小斜率近似方法讨论非高斯海面后向电磁散射特性,计算结果和实验数据有较好的吻合.
Two-dimensional electromagnetic backscattering over the Gaussian and non-Gaussian rough sea surfaces was investigated by using small slope approximation method.The computation formulae and numeric result of autocorrelation function,the skewness and the deviated peakness functions were given.The formulae of backscattering cross sections over the Gaussian and non-Gaussian rough sea surface were obtained by means of small slope approximation.Finally,by applying small slope approximation,the characteristics of electromagnetic backscattering over non-Gaussian oceanic surface was discussed.A better agreement was obtained between the numerical results and the measured data.
出处
《兰州理工大学学报》
CAS
北大核心
2013年第1期167-171,共5页
Journal of Lanzhou University of Technology
基金
西南石油大学校基金项目的资助
关键词
小斜率近似
高斯粗糙面
非高斯粗糙面
电磁散射
small slope approximation
Gaussian rough surface
non-Gaussian rough surface
electromagnetic scattering
