摘要
在耗散弱起伏随机介质中无线电通信的侧面波的平均强度是假定随机介质中折射指数起伏是斯散谱和激励源是脉冲偶极子,采用Born近似,并矢格林函数技术进行研研究,得到了平均强度的解析解,并用反射系数、阻抗、导纳以及简化的超几何级数表示。结果表明,平均强度由相干强度和非相干强度组成。相干强度是在通信中起着支配作用的,但由相干波激励的非相干强度在源区是不能忽視的。本文表述的理论公式结果与实验结果一致。
The average intensity of lateral wave in radio communication in the lossy weak fluctuating in the random media is of Gaussian spectrum and the excited source is pulse dipole is investigated by using Born appoximation and dyadic Green's function (DGF) technique, and the analytical solution for average intens ity is obtained and represented by reflective coefficients, impedance and admittance terms in terms of degenerate hypergeometric series etc. The results reveal that the average intensity consists of coherenec and incoherence internsities; the coherence intensity is the dominant intensity in the communication, but the incoherence intensity excited by coherenec wave in the source region can not be neglected. The theoretical formulae presented here are in good agreement with the experimental results.
出处
《贵州大学学报（自然科学版）》
1991年第3期174-183,共10页
Journal of Guizhou University:Natural Sciences
基金
国家自然科学基金~~
关键词
随机介质
侧面波
电磁波
传播
Random media, Pulsed wave, Average intensity, Lateral wave propagation, Electromangetic wave theory.
