甚低频T形天线阵地网损耗电阻的分析与计算  

Analysis and calculation of ground loss resistance for a VLF T-type antenna array with the ground screen

作　　者：柳超[1,2] 梁玉军[2] 刘其中[1] 付芸[2] 

机构地区：[1]西安电子科技大学天线与微波技术重点实验室,陕西西安710071 [2]海军工程大学电子工程学院,湖北武汉430033

出　　处：《西安电子科技大学学报》2008年第6期1026-1030,共5页Journal of Xidian University

基　　金：国家部委预研基金资助(410010202)

摘　　要：改进了甚低频T形天线阵地网损耗电阻的解析算法,增加了长顶线上的电流对地网磁场损耗电阻的贡献,提高了计算精度.基于天线阵近场的矩量法数值仿真结果,对天线近区的地损耗功率进行数值积分,得到了地网损耗电阻的一种数值算法.用这两种算法计算了一个实例天线阵的地网损耗电阻,计算结果均与测量数据相一致,计算精度比现有解析法的精度提高了30%～50%.The methods for calculating the ground loss resistance of a very low frequency （VLF） T-type antenna array with the ground screen are studied. The magnetic field loss produced by the currents on antenna top wires of an arbitrary length is introduced to the classical analytical method. Based on the numerical simulation results of the near fields by the method of moments, the numerical integration of the ground loss power for an antenna array are calculated and a numerical method for computing the loss resistance of the ground screen is established. The loss resistance of the grounding system of a typical antenna array is computed using these two methods respectively. Results agree well with the measured data, and the precision is 30%～50% better than that of the classical analytical method.

关 键 词：矩量法 甚低频天线 损耗电阻 解析算法 

分 类 号：TN820[电子电信—信息与通信工程]