目前,世界上共建立了七个地面站(其中包括英国站),用于跟踪美国新型侦察卫星。地面跟踪站对于美国监测卫星网起着决定性作用。最近,该监测网正在彻底检修,如果没有新站代替工作,卫星上的信息就不能继续传播到美国,地面的指令也不能被发送到卫星上去。 At present, seven ground stations (including the UK station) have been established in the world to track the new U.S. reconnaissance satellites. Ground tracking stations play a decisive role in the United States monitoring of satellite networks. Recently, the monitoring network is undergoing overhaul. If no new stations replace work, the information on the satellites can no longer be transmitted to the United States and ground commands can not be sent to satellites.