考场非法电台监测系统设计
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摘要
无线电的发展为人们的生活带来了很多的方便,但同样的,也有少数不法分子使用无线电设备进行的非法活动,尤其是利用无线电作弊的行为日益猖獗。近年来,各种考试中利用无线电作弊的手段越来越多,规模越来越大,同时也越来越隐蔽。作弊行为严重破坏了考试的公平和公正,给社会安全和稳定带来很大的负面影响。本文针对考场环境设计一套快速、方便、经济的非法电台监测系统。该系统能够检测识别考场非法电台信号并应用自适应定向干扰屏蔽等技术阻断非法电台传播。
The development of radio has brought a lot of convenience to people's lives. However, there are also a few lawbreakers carried out illegal activities by using radio equipment, especially radio cheating. In recent years, the instrumentality of radio cheating in various examinations has been continuously refurbished and becoming more and more hidden and the scale is getting bigger.It has seriously damaged the fairness and integrity of examinations.It has brought about a great negative impact on social security and stability. This paper designs a monitoring system of illegal radio for the examination room environment, the system has the characteristics of fast, convenient and economical. The system can detect and recognize the signals of illegal radio station,and interfere the illegal radio signals automatically by adaptive directional jamming and screen technology.
The development of radio has brought a lot of convenience to people's lives. However, there are also a few lawbreakers carried out illegal activities by using radio equipment, especially radio cheating. In recent years, the instrumentality of radio cheating in various examinations has been continuously refurbished and becoming more and more hidden and the scale is getting bigger.It has seriously damaged the fairness and integrity of examinations.It has brought about a great negative impact on social security and stability. This paper designs a monitoring system of illegal radio for the examination room environment, the system has the characteristics of fast, convenient and economical. The system can detect and recognize the signals of illegal radio station,and interfere the illegal radio signals automatically by adaptive directional jamming and screen technology.
引文
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[2]陈爱青.非法调频广播自动监测系统设计与实现[J].电声技术,2017,41(6):87-91.
[3]孙信群.关于考试保障中ESMB/EB200频谱扫描参数设置的探讨[J].中国无线电,2009(6):49-50.
[4]范海波,杨志俊,曹志刚.卫星通信常用调制方式的自动识别[J].通信学报,2004,25(1).
[5]谢芳娟,许仙明,朱淑云.基于谱分析的信号分类算法研究[J].科技广场,2012(3):85-87.
[6]俞一鸣,姚远,程学虎.TDOA定位技术和实际应用简介[J].中国无线电,2013(11):57-58.