Spherical harmonic series solution of fields excited by vertical electric dipole in earth-ionosphere cavity |
| |
Authors: | Yuanxin WANG Wensheng FAN Weiyan PAN Hongqi ZHANG |
| |
Affiliation: | (1) Qingdao Branch, Chinese Research Institute of Radiowave Propagation, Qingdao, 266071, China;(2) The Communication Department of Chinese Navy Headquarters, Beijing, 100841, China |
| |
Abstract: | The spherical harmonic series expression of electromagnetic fields excited by ELF/SLF vertical electric dipole in the spherical
earth-ionosphere cavity is derived when the earth and ionosphere are regarded as non-ideal conductors. A method of speeding
numerical convergence has been presented. The electromagnetic fields in the cavity are calculated by this algorithm, and the
results show that the electromagnetic fields between the earth and the ionosphere are the sum of two traveling waves in the
SLF band. Moreover, the results are in complete agreement with that of the well-known spherical second-order approximation
in the SLF band. The electromagnetic fields in the cavity are a type of standing wave in the ELF band and the variation of
the amplitude versus frequency coincides with Schumann’s resonance.
__________
Translated from Chinese Journal of Radio Science, 2007, 22(2): 204–211 译自: 电波科学学报] |
| |
Keywords: | spherical harmonic series speeding numerical convergence Schumann’ s resonance |
本文献已被 万方数据 SpringerLink 等数据库收录! |
|