【摘要】 众所周知 ,在内谐振频率点上 ,用矩量法求解电场或磁场表面积分方程将得到不正确的表面电流。文中应用奇异值分解和正交化方法对由电场积分方程计算出的表面电流进行修正 ,从而得到目标表面上产生散射场的真实电流分布。文中计算了一无限长理想导体圆柱内谐振时的散射截面 ,所得结果与解析解一致 ,并对一无限长理想导体正方柱的后向散射截面进行了计算 ,结果表明本文方法是有效和准确的。更多还原

【Abstract】 That the modified surface current will be given using the method of moments to solve either the electric or magnetic field surface integral equation at the resonant frequencies.The singular value decomposition and the orthogonalized method were used for correcting the calculated surface current from the electric field integral equation, and the true electric current induced on the target surface, which produced the scattered fields, could be obtained. The scattering cross section was calculated for an infinitely long, perfectly conducting circular cylinder at the interior resonance, and the obtained results were in good agreement with the analytical results. The backscattering cross section of an infinite square cylinder had been also calculated. It is shown that the present method is valid and accurate.更多还原