Because of the relative movement between the leo satellites and the terrestrial user terminals , the very high handover rate during a call ’ s lifetime , including inter - spotbeam handover , inter - satellite handover and handover between satellite communication systems and terrestrial ones , will occur 由于低轨道卫星与地面用户终端之间存在相对运动,会引起切换问题,主要包括波束间切换,卫星间切换,以及卫星通信系统与地面通信系统之间的切换。
地面: the earth's surface; ground通信: communication; communicate b ...系统: system月面通信系统: lunar surface communication system地面通信跟踪系统: gcts ground communication tracking system地面通信和电子设备系统: ground c-e system地面通信链路: terrestrial communication link地面通信设备: gce ground communication equipment; ground communication equipment地面通信设施: gce ground communication facility地面通信网路: terrestrial communication network红外地面通信: infrared groundlink空间地面通信: space to ground communication; space-to-ground communication移动地面通信站: tgcs transportable ground communication station光通信系统: optical communication system机通信系统: man-machine communication system通信系统: communication system; communications systems; reporting system主通信系统: main communication system地面机动部队卫星通信系统: gmfsc ground mobile forces satellite communications内部通信系统, 相互通信系统: intercommunication system红外地面通信 在灾害事件中: infrared groundlink可运输的地面通信站: tgcs transportable ground communications station办公通信系统: office communication system保密通信系统: privacy communication system报知通信系统: warning communications闭路通信系统: closed-circuit communications system