The two transpolar shortwave time signal circuits,Moscow and Irkutsk to the Great Wall Station in Antarctica, are used to study the fading characters for shortwave long circuit.
为了研区的短波长电路的特性,在南长城站收测莫斯科、依尔茨克的短波授时台信号,并给出各频对应的深度、、平均持续时间等参数的统计特征和幅度分布曲线。