【摘要】：隨著科學的進步,社會的發(fā)展,現(xiàn)代無線電通信技術在社會發(fā)展過程中得到廣泛的應用,人們的生活已經(jīng)離不開無線電通信,但伴隨而來的是通過利用高科技無線電技術進行考試作弊的手段不斷翻新,呈現(xiàn)專業(yè)化、集團化、網(wǎng)絡化態(tài)勢,嚴重破壞了公平和公正的考試環(huán)境,給社會帶來了極大的負面影響。利用無線電技術進行考試作弊有以下幾個特點：在很寬的頻段內(nèi)隨機使用頻率；發(fā)射時間短；越來越多使用數(shù)字信號,單次發(fā)射時間有時不到2秒、傳送一百多漢字；主要用于考試期間,服務于考生,具有時效性、地域性特點。我們分析現(xiàn)有監(jiān)測和干擾處置手段,發(fā)現(xiàn)目前這些系統(tǒng)主要針對日常無線電監(jiān)測,時效性、地域性不是很強,針對考試保障工作方面,信號的快速處置功能不強,使用不方便。對此,通過分析接收機性能,結合考試保障實際經(jīng)驗,分析和設計出一套無線電信號快速處理系統(tǒng),通過建立信號特征數(shù)據(jù)庫,將采集到的無線電信號與數(shù)據(jù)庫的里的數(shù)據(jù)進行比對,快速查找分辨出非法的作弊信號,大幅度提高了作弊信號偵察的速度、干擾處置效率,為防范利用無線電技術進行考試作弊工作提供一種有力工具。
[Abstract]:With the progress of science and the development of society, modern radio communication technology has been widely used in the process of social development. But with it, the means of cheating through the use of high-tech radio technology are constantly renovated, showing a trend of specialization, collectivization, and networking, which seriously undermines the fair and just examination environment. Has brought great negative influence to the society. Using radio technology to cheat in the examination has the following characteristics: random use frequency in a wide frequency range, short transmission time, more and more digital signals, sometimes less than 2 seconds in a single transmission time, more than 100 Chinese characters transmitted; Mainly used in the examination period, serving candidates, with timeliness, regional characteristics. We analyze the existing monitoring and interference disposal methods, and find that these systems are mainly aimed at daily radio monitoring, timeliness, regional nature is not very strong, for the test guarantee work, the signal fast processing function is not strong, not easy to use. In this paper, by analyzing the performance of the receiver and combining the practical experience of the test guarantee, a set of radio signal fast processing system is analyzed and designed, and the signal characteristic database is established. By comparing the collected radio signals with the data in the database, we can quickly find and distinguish illegal cheating signals, which greatly improve the speed of detection of cheating signals and the efficiency of jamming disposal. To prevent the use of radio technology to cheat in the examination to provide a powerful tool.
【學位授予單位】：廣西大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN98
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本文編號：2326261