某些移动卫星通信天线自动跟踪系统采用激光陀螺进行跟踪，但激光陀螺跟踪有其不足之处。
A new method, gadient algorithm, is put forward to replace the laser gyroscope for the antenna autotracking system of the mobile satellite communication earth station.
卫星通信线路的设计或分析一定涉及到天线增益。
Circuitry design and analysis must involve antenna gain in satellite communications.
指挥站由许多子系统组成，包括卫星通信、天线控制、视频会议、监视电视、IP电话和电源。
The command posts consists of a number of subsystems, including satellite communications, antenna control, video conference, surveillance TV, IP telephone, and power supply.
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