摘要
根据弯曲导体平板的特点,将电流在水平与竖直向分别进行离散,由电流连续性方程获得电荷离散公式,得到电场积分方程(EFIE)的离散形式。用泰勒展开消除格林函数积分中的奇异值,并通过积分近似求解,给出了一种改进的双共轭梯度迭代法(CGS)快速求解大型线性方程组。仿真结果表明:与原双共轭梯度迭代法相比,该法的收敛速度更快、精度更高。
According to the characteristics of rectangular bent plate, the electric current on the plate was discretized along x and y direction respectively. The factual situation the discrete formula of electric charge was deduced through the equation of continuity of electric current, and the discrete electric field integral equation （EFIE） was obtained. The singular value problem in the Green＇ s function integral was solved by Taller expansion, and integral approximation was applied to solve the equation. Then an improved bi-conjugate gradient method （CGS） was adopted to solve big linear equations. The simulation results showed that the faster speed and higher precision could be gained through CGS.
出处
《上海航天》
2009年第5期20-23,60,共5页
Aerospace Shanghai
基金
陕西省自然科学基金(2005F23)
关键词
弯曲平板
矩量法
雷达散射截面积
改进的双共轭梯度迭代法
Rectangular bent plate
Method of moment
Radar cross section
Improved bi-conjugate gradient method
