中文摘要：

针对OPNET网络仿真软件不能体现短波天波传输特点的问题,分析了短波天波传输信道的特性,给出了天波传输方式下的路径长度和传输损耗的计算方法。介绍了OPNET网络仿真软件和ITS短波信道模拟软件,结合信道计算方法和软件仿真原理,分析了两种软件在短波网络仿真中的契合点,提出了基于两种软件联合的短波网络仿真方法。通过将联合仿真方法在短波网络性能分析中的应用,得到的结果能够体现短波信道特点,说明该联合仿真方法能够为OPNET软件下的短波网络仿真提供较真实的短波信道环境。

英文摘要：

Aiming at the problem of the OPNET can＇t reflect the feature of high frequency（HF）communication via skywave propagation. Firstly,the characteristics of HF skywave channel are analyzed,and the calculation methods of transmission path length and power loss are given out. The OPNET for network simulation and the ITS for channel simulation are introduced,according to the principles of channel calculation and software simulation,a combined simulation method based on the inner integrated point of two softwares is developed. By using the combined simulation method in a HF network for performance analysis,the result can reflect the characteristic of HF channel,which proved that the combined simulation method can provide more realistic channel condition for OPNET when simulating a HF network.