本文關(guān)鍵詞： UWB定位 時(shí)域天線 智能交通 圓極化　出處：《電子科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：基于沖擊脈沖體制的超寬帶(UWB)定位技術(shù)在短距離精確定位方面具有獨(dú)特的優(yōu)勢,近年來,在室內(nèi)定位應(yīng)用和室內(nèi)到室外連續(xù)定位覆蓋等領(lǐng)域,受到了越來越多的關(guān)注。時(shí)域天線作為室內(nèi)定位系統(tǒng)中的核心部件,承載著系統(tǒng)內(nèi)的無線通信任務(wù),對時(shí)域信號的良好傳輸起著至關(guān)重要的作用。因此,本文對適用于UWB室內(nèi)定位系統(tǒng)的時(shí)域天線進(jìn)行了研究,研究角度包括了時(shí)域天線的設(shè)計(jì)和時(shí)域性能分析,主要內(nèi)容如下:1.線極化時(shí)域天線設(shè)計(jì):根據(jù)智能交通應(yīng)用中對車輛定位的需求,針對密集基站架設(shè)系統(tǒng),設(shè)計(jì)了單極子天線用作基站天線,針對大間距基站架設(shè)系統(tǒng),設(shè)計(jì)了領(lǐng)結(jié)天線陣用作基站天線;針對定位目標(biāo)的安裝需求,設(shè)計(jì)了盤錐天線作為標(biāo)簽天線�；咎炀�和標(biāo)簽天線分別作為收發(fā)天線,均為線極化天線。通過頻域仿真和實(shí)物加工測試,表明天線的設(shè)計(jì)符合應(yīng)用需求。2.圓極化時(shí)域天線設(shè)計(jì):根據(jù)對旋轉(zhuǎn)體定位的應(yīng)用需求,以阿基米德螺旋天線為模型,設(shè)計(jì)了1款圓極化的時(shí)域天線,避免了因?yàn)樾D(zhuǎn)體旋轉(zhuǎn)引起的收發(fā)天線間的極化失配問題。頻域仿真和實(shí)物加工測試結(jié)果表明圓極化天線的設(shè)計(jì)符合系統(tǒng)要求。3.天線的時(shí)域性能分析:根據(jù)天線的評價(jià)需求,從仿真方法和測試方法兩方面對天線的時(shí)域性能分析方法進(jìn)行了研究,給出了可操作的仿真和測試方法。并對所設(shè)計(jì)的4款天線的時(shí)域性能進(jìn)行了分析。時(shí)域性能的分析結(jié)果與頻域仿真和實(shí)際測試結(jié)果較為一致,一方面表明時(shí)域性能分析方法的準(zhǔn)確性,另一方面表明天線設(shè)計(jì)符合了系統(tǒng)的設(shè)計(jì)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.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN925
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本文編號：1447570