各种科学实验卫星、应用卫星、载人飞船、航天飞机、空间站等航天器,它们由发射到进入轨道上运行作业,都离不开地面各种无线电和电子设备的支持,这些支持可分成四种:即轨道跟踪测量、遥测、遥控和通信。第一种支持称为轨道跟踪测量(包括轨道预报)。航天器由发射场用火箭点火送入预定轨道后,即在一 Various scientific experimental satellites, applied satellites, spacecraft, space shuttle, space station and other spacecraft, which are launched into the orbit into operation, are inseparable from the ground with a variety of radio and electronic equipment support, these support can be divided into four Species: Track tracking measurement, telemetry, remote control and communication. The first type of support is called orbital tracking measurement (including orbital prediction). The spacecraft fired by the launch site with a rocket fired into the scheduled orbit, that is, in one