Iterative Approach to Scattering from the Targets above a Rough Surface
The difference field RCS from a target above a rough surface is derived. The electric field integral equations (EFIE) of the difference induced currents Jsd on the surface and J0 on target are developed. Because of the strongest scattering in the specular direction, a small interface taken along the converse specular direction is attributed to computation of the surface scattering upon the target. A fast mutual-coupling iterative method is developed to solve the two EFIEs. The interface length for effective computation is discussed. Using the Monte Carlo method,scattering from a target,such as a cylinder and a square column, above the P-M rough surface is numerically simulated. Scattering from a cylinder above the rough surface in the specular direction is enhanced significantly. The Bi-RCS of a square column above the rough surface shows two peaks in forward and backward directions. As a model of rough sea surface,when the surface wind speed increases, the scattering peaks become lower, and more defused scattering shows the angular scattering pattern.
Hongxia Ye Ya-Qiu Jin
Fudan University,China
国际会议
Progress in Electromagnetics Research Symposium 2005(2005年电磁学研究新进展学术研讨会)(PIERS 2005)
杭州
英文
201-204
2005-08-22（万方平台首次上网日期，不代表论文的发表时间）