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.
为了研究过极区的短波长电路的衰,在南极长城站收测莫斯科、依尔茨克的短波授时台信号,并给出对应的衰深度、衰、衰平均持续时间等参数的统计征和衰幅度分布曲线。