移動通訊
通(tong)信(xin)雙方有一方或兩方處于運動(dong)(dong)中(zhong)的(de)通(tong)信(xin)。包括陸、海、空移(yi)(yi)動(dong)(dong)通(tong)信(xin)。采用(yong)的(de)頻段遍及低頻、中(zhong)頻、高(gao)頻、甚高(gao)頻和特(te)高(gao)頻。移(yi)(yi)動(dong)(dong)通(tong)信(xin)系統由移(yi)(yi)動(dong)(dong)臺、基臺、移(yi)(yi)動(dong)(dong)交換局組成...