无源时差估计技术及软件系统实现研究

发布时间：2018-04-26 12:57

本文选题：时差估计 + 界面设计　；参考：《电子科技大学》2014年硕士论文

【摘要】：随着无线电资源的广泛使用,人们对电磁环境监测定位设备的需求不断增加,尤其是对飞机场防电磁干扰监测仪等小范围环境内频谱管理设备的需求。因此,设计一套便携式、低成本、功能齐全的网络化无源监测定位系统具有重要的使用价值。本文基于时差定位系统,主要设计和研究软件系统部分,并对时差估计算法进行分析和研究。首先,给出一种工程中较为实用的改进型精确时差估计方法,并分析了时差测量误差对定位性能的影响。在算法验证基础上,实现了无源定位系统的软件设计,重点完成了界面显示、参数配置、数据通信,以及数据存储等模块的功能实现。整个软件系统基于VS2010平台和C++语言进行开发。其次,采用了模块化软件设计方法,对各个功能模块进行单独设计和测试。通过设计各功能模块完成了以下工作:(1)通过绘图显示模块实现了二维曲线图、柱状图和彩色瀑布图的显示;(2)通过参数配置模块实现了对远程硬件系统的控制和管理;(3)通过数据通信模块实现了整个无源定位系统的网络化;(4)通过数据存储模块实现了系统数据的存储,方便用户进行离线分析。最后,通过多线程设计方案,将各个功能模块进行协调集成,完成了整个无源时差定位软件系统的设计与实现。该软件系统具有很好的精确授时功能,在时钟源同步情况下,时差测量误差小于100ns。该软件具有固定频率扫描、频段扫描、宽带扫描、信道扫描和全景扫描等模式,这些模式的工作带宽最高可达20MHz,且工作频率范围为20MHz~3.6GHz。软件界面简洁美观,操作方便,具有信号监测、信号检测和信号统计分析等多种功能。
[Abstract]:With the wide use of radio resources, the demand for electromagnetic environment monitoring and positioning equipment is increasing, especially the demand for spectrum management equipment in small environment such as airport electromagnetic interference monitor. Therefore, the design of a portable, low-cost, full-featured networked passive monitoring and positioning system has an important use value. In this paper, based on the time difference location system, the software system is designed and studied, and the algorithm of time difference estimation is analyzed and studied. Firstly, an improved accurate time difference estimation method is presented, and the influence of the time difference measurement error on the positioning performance is analyzed. On the basis of algorithm verification, the software design of passive positioning system is realized, and the functions of interface display, parameter configuration, data communication and data storage are implemented. The whole software system is based on VS2010 platform and C language. Secondly, the modular software design method is used to design and test each functional module separately. The following work is accomplished by designing each functional module: 1) the two-dimensional graph is realized by drawing and displaying module. The display of histogram and color waterfall is realized by parameter configuration module, the control and management of remote hardware system is realized by means of data communication module, the network of the whole passive positioning system is realized by the data communication module, and the data storage module is used to realize the control and management of the remote hardware system The storage of system data is realized. It is convenient for users to do off-line analysis. Finally, the design and implementation of the whole passive TDOA software system is completed through the multi-thread design scheme and the coordination and integration of each functional module. The software system has a good precision timing function. In the case of clock source synchronization, the time difference measurement error is less than 100ns. The software has fixed frequency scanning, frequency band scanning, wideband scanning, channel scanning and panoramic scanning. The operating bandwidth of these modes is up to 20 MHz, and the operating frequency range is 3.6 GHz. The software interface is simple and beautiful, easy to operate, with signal monitoring, signal detection and signal statistical analysis and other functions.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN95

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