在通信系统的仿真中,信道模拟器对真实信道的逼近程度,直接影响到通信系统仿真所得性能参数的有效性.因而,开发性能良好的短波信道模拟器是十分必要的.详细叙述了短波电离层信道Watterson模型的原理,根据军标所给短波信道参数,提出了具体的短波信道模拟器实现方案,并给出了计算机仿真结果,较好地模拟了短波信道的时间选择性衰落特性和频率选择性衰落特性.%In the simulation of communication system, the approximation degree of actual channel simulated by a channel simulator affects the effectiveness of the performance parameters obtained with communication system simulation directly.Therefore,it is essential to develop the high-performance simulator for HF channel.The principle of Watterson model which is a widely used for HF ionosphere channel is described.According to the parameters given by MIL-STD-188-141B, the implementation scheme of HF channel simulator is presented.The computer simulation demonstrates the effectiveness of the algorithm.
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