摘要
为了快速精确计算架空偶极子大地中的透射场 ,提出了一种广义索末菲积分 (GSI)两阶段复镜像等效算法。该算法将 GSI表示为准动态复镜像与泄漏复镜像之和 ,其中准动态复镜像利用准静场条件求得 ,泄漏复镜像采用矩阵束方法 (m atrix pencil m ethod)精确逼近。架空电力线路与地下通信线路互阻抗的计算结果验证了论文方法的正确性和高效性。由于考虑了泄漏复镜像的作用 ,该方法在近场和远场的计算精度都很高。该方法适用于需反复大量计算
A two stage complex image method is proposed to rapidly and precisely calculate the refractive field of an overhead dipole (generalized sommerfeld integral, GSI) in the earth. GSI is expressed analytically by the sum of two terms, one of which is the quasi dynamic complex image obtained by the quasi static condition, while the other is the leaky complex image which is approached accurately using the matrix pencil method. The validity of the method is proved by calculating the mutual impedance between overhead power lines and underground telecommunication lines. The method can be applied to calculate not only the GSI of the near field but also that of the far field, because the effect of the leaky image is taken into account.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第9期67-69,93,共4页
Journal of Tsinghua University(Science and Technology)
基金
清华大学博士学位论文基金项目
