任意形状导体目标的极点求解

Calculating the Poles of Conducting Arbitrary Shaped Targets

从理论上求解极点,频域矩量法结合围线积分是通用且准确的方法,但由于计算量大而一直用于处理旋转对称目标的求解.本文提出Chebyshev多项式展开格林函数的方法,把频率因子从电场积分方程中分离出来,实现了多频点矩量法的快速计算,解决了任意形状导体目标极点的求解问题.最后对围线积分方法进行适当改进,并求解了三种目标的极点.

In calculating poles by theory,tbe method of moments （MoM） combined with contour integration is a common and smart one. Because of time consuming, it is usually used for the rotationally symmetric objects. In this paper, we approximate the Green＇s function by Chebyshev polynomials. So,tbe factor of frequency can be extracted from electric field integral equation, which will largely decrease computation time in MoM at different frequencies. Then, it is possible to calculate targets＇ poles of arbiwary shaped objects. Lastly, by the improved contour integration, three targets＇ poles are calculated.