The calculation of the cross antenna's intensity under super-low frequency (SLF)is analyzed,and the overlay area under special computational conditions is calculated,the geographic information system (GIS)is introduced to reveal the overlay area on the map.Theprediction researchproductions could be used to evaluate the communication effectivenessof the SLF signal station,and to select appropriate communication frequency and the power level.It would be to conduct the submarine's receiving rules of SLF signals.%分析2根交叉天线的超低频通信场强的计算方法.在此基础上,计算给定条件下的信号覆盖区域,引入GIS在地图上对超低频通信的覆盖范围进行直观的显示.本文的研究成果对于评估超低频通信台站的发信效能,进行超低频通信台站的发信频率选择、功率选择,以及潜艇的收信都具有重要的指导意义.
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