目前在非法广播监管过程中面临着包括人员效率低、时效性弱、准确度不高等诸多实际问题,本文介绍了一套无线广播电视信号合法性自动化监管系统,该系统采用了可疑信号甄别技术、非法频点自动识别技术、调制方式识别技术以及内容相关性鉴别技术等关键技术,为非法广播监管提供了全面有效的系统解决方案,并已在国内多家监管部门正式使用并取得良好效果。 At present, many practical problems such as low staff efficiency, weak timeliness and low accuracy are faced with in the supervision of illegal broadcasting. This paper introduces a set of automatic monitoring system for the legitimacy of radio and television signals. The system uses suspicious signal discrimination technology, Key technologies such as automatic identification of illegal frequencies, identification of modulation methods and identification of content-related technologies have provided a comprehensive and effective system solution for illegal broadcast regulation and have been officially used by many regulatory authorities in China and achieved good results.