通(tong)信(xin)雙方有一方或兩方處(chu)于運動(dong)中的通(tong)信(xin)。包括陸、海(hai)、空移動(dong)通(tong)信(xin)。采用(yong)的頻段遍及低(di)頻、中頻、高(gao)(gao)頻、甚高(gao)(gao)頻和特高(gao)(gao)頻。移動(dong)通(tong)信(xin)系統由移動(dong)臺、基(ji)臺、移動(dong)交換(huan)局組成(cheng)...