短波电路仿真测量研究

simulation and measurement on Short-Wave Circuit

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 short-wave communication is influenced by the variety of ionosphere, the signal is not steady, the decisive suggestion can be obtained by using the simulation software VOACAP .Firstly, the simulation software VOACAP is applied to simulate the short wave communication circuit characteristics between Beijing to wuhan and the, parameters like the maximum usable frequency（MUF）, the field strength at receiving location can be obtained. Then the field strength is actually measured. The software simulation data is comformable with the experimental data, and this proves which prove that the result of the simulation software VOACAP is credible during this period and season in Asia.