摘要
近年来考试无线电作弊有着明显的上升趋势,本文针对这种情况提出了一种无线电对抗系统。该系统主要应用于无线电考试作弊的场合,由监测子系统和干扰子系统组成。其中监测子系统为主控系统,干扰子系统为受控系统。本系统能实现20MHz^1GHz范围内的无线作弊信号的监测扫描,并能有选择地干扰可疑信号,同时本系统对作弊信息有存储、汇总和分析的功能,最终能形成报表供专人参考。首先监测子系统进行搜索、解调并监听无线作弊信号,锁定目标后发送信息给干扰子系统,然后干扰子系统根据这些信息,给出最佳干扰方案并实施干扰。这样既能有效的遏制作弊信息的传输,同时也防止了对考场周围的合法工作信号造成干扰。
Recently,wireless cheating during the examination is used more and more.The paper presents a kind of system for anti-wireless cheating during the examination,which consists of two different functional subsystems.One is radio monitoring subsystem,and the other is jamming subsystem.Radio monitoring subsystem works as the controlling system and jamming subsystem is the controlled system.The system can monitor and scan wireless cheating signals between 20MHz and 1GHz,and can jamming the suspicious signals selectively.Besides,the system can save,summary and analysis the cheating signals and finally the system can make a report for specialist reference.First radio monitoring subsystem search,demodulation and monitor wireless signals and send the message to jamming subsystem when it locks the target.Then jamming subsystem gives the best jamming plan according to the message and jams the cheating signals.For this reason,the system not only can jam the transmission of cheating message effectively,but also can avoid jamming legitimate working signals around the examination rooms.
出处
《微计算机应用》
2011年第6期20-26,共7页
Microcomputer Applications
关键词
无线电
对抗
监测
干扰
wireless radio
countermeasures
monitor
jamming
