基于UWB室内定位系统的时域天线研究

发布时间：2018-01-20 08:37

  本文关键词： UWB定位 时域天线 智能交通 圆极化　出处：《电子科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：基于冲击脉冲体制的超宽带(UWB)定位技术在短距离精确定位方面具有独特的优势,近年来,在室内定位应用和室内到室外连续定位覆盖等领域,受到了越来越多的关注。时域天线作为室内定位系统中的核心部件,承载着系统内的无线通信任务,对时域信号的良好传输起着至关重要的作用。因此,本文对适用于UWB室内定位系统的时域天线进行了研究,研究角度包括了时域天线的设计和时域性能分析,主要内容如下:1.线极化时域天线设计:根据智能交通应用中对车辆定位的需求,针对密集基站架设系统,设计了单极子天线用作基站天线,针对大间距基站架设系统,设计了领结天线阵用作基站天线;针对定位目标的安装需求,设计了盘锥天线作为标签天线。基站天线和标签天线分别作为收发天线,均为线极化天线。通过频域仿真和实物加工测试,表明天线的设计符合应用需求。2.圆极化时域天线设计:根据对旋转体定位的应用需求,以阿基米德螺旋天线为模型,设计了1款圆极化的时域天线,避免了因为旋转体旋转引起的收发天线间的极化失配问题。频域仿真和实物加工测试结果表明圆极化天线的设计符合系统要求。3.天线的时域性能分析:根据天线的评价需求,从仿真方法和测试方法两方面对天线的时域性能分析方法进行了研究,给出了可操作的仿真和测试方法。并对所设计的4款天线的时域性能进行了分析。时域性能的分析结果与频域仿真和实际测试结果较为一致,一方面表明时域性能分析方法的准确性,另一方面表明天线设计符合了系统的设计要求。
[Abstract]:UWB-based ultra-wideband (UWB) positioning technology based on impulse pulse system has a unique advantage in short distance accurate positioning. In recent years, it has been used in indoor positioning applications and indoor to outdoor continuous positioning coverage and other fields. Time domain antenna, as the core component of indoor positioning system, carries the wireless communication task in the system, and plays an important role in the good transmission of time domain signal. In this paper, the time domain antenna suitable for UWB indoor positioning system is studied, including the design of time domain antenna and the analysis of time domain performance. The main contents are as follows: 1. Design of linear polarization time domain antenna: according to the need of vehicle positioning in intelligent transportation application, the monopole antenna is designed as base station antenna for dense base station erection system. The bow tie antenna array is designed to be used as base station antenna for the large distance base station erection system. In order to meet the installation requirements of the positioning target, the disk cone antenna is designed as the tag antenna. The base station antenna and the tag antenna are used as the transceiver antenna respectively, which are both linear polarization antennas. The antenna is simulated in frequency domain and tested by physical processing. The results show that the antenna design accords with the application requirement. 2. The circular polarization time domain antenna is designed. According to the requirement of rotating body positioning, a circular polarization time domain antenna is designed with Archimedes helical antenna as the model. The polarization mismatch between transceiver antennas caused by rotator rotation is avoided. The results of frequency domain simulation and physical processing test show that the design of circular polarization antenna meets the requirement of system .3. the time domain performance of antenna is analyzed. According to the antenna evaluation requirements. The time domain performance analysis method of antenna is studied from two aspects: simulation method and test method. The operational simulation and test methods are given, and the time domain performance of the four antennas designed is analyzed. The analysis results of the time domain performance are in good agreement with the frequency domain simulation and the actual test results. On the one hand, the accuracy of the time domain performance analysis method is demonstrated, on the other hand, the antenna design meets the design requirements of the system.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN925
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本文编号：1447570