According to the characteristics and the requirements of telemetry and telecontrol system, a digital frequency source was developed with frequency synthesizer.
本文根据无人机测控系统数据链的特点及对测控系统的要求，提出了采用频率合成技术实现数字频率源的方案。
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It is mainly applied to expanding frequency of the telecontrol code. The circuit has more simple configuration and safe secrecies.