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首頁> 外文學(xué)位 >Robustness techniques for global navigation satellite systems (GNSS) receivers =TECHNIQUES DE ROBUSTESSE DES RéCEPTEURS POUR LES SYSTèMES GLOBAUX DE NAVIGATION SATELLITAIRE (GNSS)
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Robustness techniques for global navigation satellite systems (GNSS) receivers =TECHNIQUES DE ROBUSTESSE DES RéCEPTEURS POUR LES SYSTèMES GLOBAUX DE NAVIGATION SATELLITAIRE (GNSS)

機(jī)譯：全球?qū)Ш叫l(wèi)星系統(tǒng)（GNSS）接收機(jī)的魯棒性技術(shù)=全球衛(wèi)星導(dǎo)航系統(tǒng)（GNSS）的接收機(jī)魯棒性技術(shù)

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摘要

The world of satellite navigation has known a constant evolution for several years. At the turn of the century, its craze resulted in a multitude of automated applications being released in both the commercial and industrial markets. All this occurred in areas as diverse as agriculture, construction, security and transport of all kinds. Through integration with complementary technologies and ever smaller achieved accuracy thresholds, geopositioning also managed to break through initially incompatible markets, such as hostile environments and confined spaces (e.g. in urban canyons, inside buildings, under the canopy, etc.). Indeed, recent technological and algorithmic advances can now mitigate or solve the traditional limitations of GPS, namely availability, integrity, accuracy and resistance to interference.;With so much variety and changes, a universal and flexible approach is best suited as a basic structure of a satellite navigation receiver. The work herein therefore focuses on universal architectures for such channels, through various hardware modules forming the receiver. Although indispensable, upstream radio frequency modules and downstream software in navigation receivers are beyond the scope of this thesis.;Following a comprehensive review of the specificities of each satellite signal, a list of their associated tracking techniques is classified. This information sets the stage for the architecture requirements of the targeted universal channels, which are broken up into three and divided into as many papers: 1) frequency domain acquisition, 2) match filter tracking and 3) solution augmentation with differential corrections. Various analyses and receiver configuration tools enabling a flexible and efficient development platform are then presented, including the decoding of navigation messages, different approaches to compute the signal to noise ratio and the quantification level of the incoming signal.;Since the project is ambitious, validation is based on experimentation with real signals, thus avoiding the additional development of complex multifrequency simulators for different constellations. Impacts and benefits of this patent-rewarded research are considerable, especially with the exponential growth of the market for mobile and wearable electronics.;The thesis opens with a renewed old problem, namely the signal selection (rather than the satellite selection). It is revived by leveraging the universal channels to minimize the acquisition time with old signals, while maximizing the robustness of the solution by the gradual transition to modernized and new signals. In addition, this channel flexibility paves the way for cognitive and tactical receivers, enabling them to adapt to their environment or frequency conditions.
機(jī)譯：衛(wèi)星導(dǎo)航世界幾年來一直在不斷發(fā)展。在世紀(jì)之交，它的熱潮導(dǎo)致在商業(yè)和工業(yè)市場(chǎng)上發(fā)布了許多自動(dòng)化應(yīng)用程序。所有這些都發(fā)生在農(nóng)業(yè)，建筑，安全和各種運(yùn)輸?shù)雀鱾€(gè)領(lǐng)域。通過與互補(bǔ)技術(shù)集成以及達(dá)到的更小的精度閾值，地理定位還成功突破了最初不兼容的市場(chǎng)，例如惡劣的環(huán)境和狹窄的空間（例如在城市峽谷中，建筑物內(nèi)，樹冠下等）。實(shí)際上，最新的技術(shù)和算法進(jìn)步現(xiàn)在可以緩解或解決GPS的傳統(tǒng)局限性，即可用性，完整性，準(zhǔn)確性和抗干擾性。有了如此多的變化和變化，通用且靈活的方法最適合作為GPS的基本結(jié)構(gòu)。衛(wèi)星導(dǎo)航接收器。因此，本文的工作集中在通過形成接收器的各種硬件模塊的這種通道的通用架構(gòu)上。盡管必不可少，但導(dǎo)航接收機(jī)中的上游射頻模塊和下游軟件不在本文討論范圍之內(nèi)。在全面審查每個(gè)衛(wèi)星信號(hào)的特性之后，對(duì)它們的相關(guān)跟蹤技術(shù)進(jìn)行了分類。該信息為目標(biāo)通用通道的體系結(jié)構(gòu)要求奠定了基礎(chǔ)，該通道分為三部分，分為許多論文：1）頻域獲取，2）匹配濾波器跟蹤和3）具有差分校正的解決方案增強(qiáng)。然后介紹了各種分析和接收機(jī)配置工具，這些工具和工具可實(shí)現(xiàn)靈活高效的開發(fā)平臺(tái)，包括導(dǎo)航消息的解碼，計(jì)算信噪比的不同方法以及傳入信號(hào)的量化級(jí)別。;由于項(xiàng)目雄心勃勃，因此需要進(jìn)行驗(yàn)證基于真實(shí)信號(hào)的實(shí)驗(yàn)，因此避免了針對(duì)不同星座的復(fù)雜多頻模擬器的額外開發(fā)。這項(xiàng)獲得專利保護(hù)的研究的影響和收益是相當(dāng)可觀的，尤其是在移動(dòng)和可穿戴電子產(chǎn)品市場(chǎng)呈指數(shù)增長(zhǎng)的情況下。本文以一個(gè)新的老問題開頭，即信號(hào)選擇（而不是衛(wèi)星選擇）。通過利用通用通道來最大程度地減少舊信號(hào)的采集時(shí)間，同時(shí)通過逐步過渡到現(xiàn)代化和新信號(hào)來最大化解決方案的魯棒性，可以使其重獲新生。此外，這種信道靈活性為認(rèn)知和戰(zhàn)術(shù)接收者鋪平了道路，使他們能夠適應(yīng)其環(huán)境或頻率條件。

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  • 作者

    Fortin, Marc-Antoine.;

  • 作者單位

    Ecole de Technologie Superieure (Canada).;

  • 授予單位 Ecole de Technologie Superieure (Canada).;
  • 學(xué)科 Applied mathematics.
  • 學(xué)位 D.Eng.
  • 年度 2015
  • 頁碼 228 p.
  • 總頁數(shù) 228
  • 原文格式 PDF
  • 正文語種 eng
  • 中圖分類
  • 關(guān)鍵詞

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