殊况便携式电磁环境监测系统的设计与应用

发布时间：2018-02-26 13:43

本文关键词： 电磁环境监测监测系统频谱扫描单频测量信号扫描　出处：《山东大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着社会和经济的迅速发展,无线电技术广泛应用于社会各行各业,成为推动社会生产力发展、改变人类生产和生活方式的重要核心技术。目前,不法分子采取违规无线手段谋取不正当利益的现象越来越严重,如在考试中传递答案、恶意插播电视广告或广播虚假信息、设置"伪基站"进行电信诈骗等。上述行为具有突发性高、无固定规律可循的特点,而且通常发生在地理和电磁环境非理想的场景。因此,这种殊况条件下的监测和管理成为无线电管理部门亟待解决的问题。论文针对殊况条件下的电磁环境监测需求,研究便携式电磁环境监测系统。主要工作包含以下几个方面:1.分析了 "殊况"条件下电磁环境监测面临的挑战,提出系统功能需求和设计指标,并确定了系统架构和技术路线。2.综合运用宽带接收机、FPGA、DSP、ARM、电子罗盘、GPS、WiFi和智能手机,提出一种可行的便携式电磁环境监测系统设计方案,提供了频段扫描、单频测量、频谱测量、离散扫描、录音扫描等多种实用的电磁环境监测功能。3.系统硬件设计方面,首先给出了硬件实现思路,然后重点介绍了宽带接收机单元、数字中频单元、控制单元、WiFi模块、电子罗盘、GPS模块的选件和通信接口设计。4.系统软件设计方面,首先分析了硬件模块间通信接口的软件设计,重点介绍了 McBSP和SPI接口的软件实现。然后详细阐述了便携式电磁环境监测系统操作软件(即手机APP软件)的总体设计和具体实现。5.对系统实现的各项功能进行了测试分析,并在考试作弊信号查找、"伪基站"信号查找、"黑广播"信号查找等案例中进行了实际应用验证。设计实现的便携式电磁环境监测系统具有良好的隐蔽性、便携性、实时性,为殊况条件下电磁环境监测工作提供了一种可行的解决方案。
[Abstract]:With the rapid development of society and economy, radio technology has been widely used in various sectors of society and become an important core technology to promote the development of social productivity and change the way of human production and life. The phenomenon of illegal elements using wireless means to seek improper benefits is becoming more and more serious, such as transmitting answers in examinations, maliciously broadcasting television advertisements or broadcasting false information. Setting up "pseudo-base stations" for telecommunication fraud, etc. The above behavior has the characteristics of sudden high, no fixed rules to follow, and usually occurs in geographical and electromagnetic environment is not ideal. Therefore, The monitoring and management of this special condition has become an urgent problem to be solved by the radio management department. A portable electromagnetic environment monitoring system is studied. The main work includes the following aspects: 1.The challenge of electromagnetic environment monitoring under the condition of "special situation" is analyzed, and the functional requirements and design index of the system are put forward. The architecture and technical route of the system are determined. 2. A feasible design scheme of a portable electromagnetic environment monitoring system is proposed, which integrates wideband receiver FPGA DSPARM, electronic compass, GPS / WiFi and smart phone, and provides frequency band scanning, single frequency measurement and spectrum measurement. Discrete scanning, recording scanning and other practical electromagnetic environment monitoring functions .3.The hardware design of the system is presented, and then the wideband receiver unit, the digital if unit, the control unit and the WiFi module are introduced. The selection of GPS module and communication interface design of electronic compass. 4. The software design of the communication interface between hardware modules is analyzed in the aspect of system software design. The software realization of McBSP and SPI interface is introduced in detail. Then, the overall design and implementation of portable electromagnetic environment monitoring system operation software (i.e. mobile phone APP software) are described in detail. 5. The functions of the system are tested and analyzed. It is verified by practical application in the cases of cheating signal finding, "pseudo-base station" signal searching, "black broadcasting" signal searching and so on. The portable electromagnetic environment monitoring system has good concealment, portability and real-time performance. It provides a feasible solution for electromagnetic environment monitoring under special conditions.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN98;TP274

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