A.低/極 B.低/傾斜 C.地球同步 D.高/極
A.COSPASS-SARSAT衛(wèi)星+1.6GHz信標(biāo)+地面段 B.COSPASS-SARSAT衛(wèi)星+406MHz信標(biāo)+地面段 C.Inmarsat衛(wèi)星+406MHz信標(biāo)+地面段 D.Inmarsat衛(wèi)星+1.6GHz信標(biāo)+地面段
A.LUT B.MCC C.RCC D.CES