为了更好地掌握无线电频谱利用情况，无线电频谱管理部门和国家安全部门必须对通信信号进行监控。
In order to command the use of radio spectrum, the radio spectrum management department and the security department must keep communication signals under surveillance.
认知无线电的频谱分配技术研究的是如何对检测到的空闲频谱资源进行有效的管理，是认知无线电系统的一项关键技术。
The spectrum allocation technology, which is one of the key technologies of cognitive radio, the research emphasis is how to manage the spectrum resource effectively.
从数百兆赫到数十千兆赫的微波频谱，全国无线电管理委员会曾有大致的分配。
The microwave spectrum ranges from several hundred MHz to dozens of GHz which were allocated originally by the National Radio Regulatory Commission in China.
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