摘要
采用时域小波Galerkin(WGTD)方法计算了有耗地面与三维目标的复合散射,其中连接边界采用三波法.得到近场数据后,为避免复杂的Sommerfeld积分用互易原理简化了外推过程.计算了地面目标的雷达散射截面,验证了WGTD方法的精度和有效性.与时域有限差分方法相比,WGTD方法具有色散线性好、节省内存、计算速度快等优点.
This paper employs the wavelet-Galerkin time domain （WGTD） technique to study composite scattering of arbitrarily target and a lossy ground, and the incidence is realized through three-wave technology. The far-field radiated by the surface currents is calculated using the reciprocity theorem instead of the more complicated Sommerfeld integration. Numerical radar cross section demonstrate the validity and precision of WGTD. Compared to finite difference time domain method, the WGTI） method has the advantages of smaller memory and higher efficiency.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第12期7635-7640,共6页
Acta Physica Sinica
基金
国家自然科学基金(批准号:60771038)资助的课题~~
