As the one of the earth station 's key functions, searching and tracking the satellite involves the realtime synchronous data exchange, it is a high technology.
作为地面站的一个核心功能之一—捕获并跟踪目标，涉及一个技术难点，这就是实时同步数据交换问题。
2
The acquisition system of earthquake precursor data is one of the key devices for digital earthquake precursor station, its technical target and property have important influence on data quality.