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短波通信受电离层变化影响较大,信号不稳定,运用电路仿真软件VOAVAP在台站规划阶段可获得良好的辅助决策建议。文中OACAP仿真了国内北京至武汉短波通信线路的传播特性,得到线路的最高可用工作频率和接收区域的场强;实际测量了接收区域的场强;对比结果表明两者比较吻合,说明仿真软件在该季节和时间段内,在亚洲地区的仿真结果是可信的。
The shortwave communication is greatly affected by the ionospheric variation, and the signal is unstable. Using the circuit simulation software VOAVAP, good auxiliary decision-making suggestions can be obtained during the station planning stage. In this paper, OACAP simulation of the propagation characteristics of Beijing to Wuhan shortwave communication lines, get the highest available operating frequency of the line and the reception area of the field strength; actual measured the receiving area of the field strength; comparison shows that the two are more consistent, indicating that the simulation software in During the season and time period, the simulation results in Asia are credible.