本文關(guān)鍵詞： GPS GALILEO 導(dǎo)航信號(hào)調(diào)制方式 匹配濾波捕獲　出處：《中國(guó)科學(xué)院研究生院（國(guó)家授時(shí)中心）》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著GPS現(xiàn)代化和其他新興導(dǎo)航定位系統(tǒng)如Galileo系統(tǒng)、“北斗二代”衛(wèi)星導(dǎo)航系統(tǒng)的逐步開(kāi)發(fā)完善，新型信號(hào)調(diào)制技術(shù)正在逐步取代舊式PSK-R信號(hào)調(diào)制技術(shù)，BOC信號(hào)調(diào)制技術(shù)應(yīng)運(yùn)而生。BOC調(diào)制信號(hào)具有顯著的頻譜分裂特性，能與原有的衛(wèi)星導(dǎo)航信號(hào)互相兼容，同時(shí)可以使導(dǎo)航系統(tǒng)獲得更高的跟蹤精度和抗多徑干擾性能。BOC調(diào)制方式具有廣闊的應(yīng)用前景，，其同步技術(shù)的研究引起了國(guó)內(nèi)外廣大學(xué)者的重視。 本論文的主要研究?jī)?nèi)容如下： 1.介紹了國(guó)際上正在使用的GNSS系統(tǒng)概況，并對(duì)幾種GNSS系統(tǒng)的信號(hào)調(diào)制方式進(jìn)行了研究。以Galileo E1頻段和GPS L1頻段為重點(diǎn)，深入分析了CBOC信號(hào)調(diào)制方式和TMBOC調(diào)制方式的調(diào)制原理；以Galileo E5頻段為重點(diǎn)深入分析比對(duì)雙碼AltBOC、標(biāo)準(zhǔn)AltBOC和恒包絡(luò)AltBOC信號(hào)調(diào)制方式的調(diào)制原理。 2.研究了GPS L1、GalileoE1和E5頻段導(dǎo)航信號(hào)生成技術(shù)：通過(guò)數(shù)學(xué)推導(dǎo)產(chǎn)生GPS C/A碼和GPS Weil碼，并仿真出GPS L1頻段信號(hào)；研究了Galileo E1頻段信號(hào)，并用MATLAB仿真了E1頻段的數(shù)據(jù)通道信號(hào)和導(dǎo)頻通道信號(hào)；研究了Galileo E5頻段的信號(hào)組成、擴(kuò)頻碼生成及子載波生成等內(nèi)容，并通過(guò)MATLAB仿真了Galileo E5信號(hào)。 3.介紹了傳統(tǒng)導(dǎo)航信號(hào)的捕獲方法，分析了各種導(dǎo)航信號(hào)的跟蹤精度和多徑誤差，重點(diǎn)研究了基于FFT匹配濾波器捕獲算法，從原理和實(shí)現(xiàn)兩個(gè)方面研究了能夠并行處理的匹配濾波器算法，并用此方法完成了對(duì)GPS L1民用導(dǎo)航信號(hào)的捕獲并獲得捕獲結(jié)果。
[Abstract]:With the modernization of GPS and other emerging navigation and positioning systems such as Galileo system, the "Beidou second generation" satellite navigation system is gradually developed and perfected. New signal modulation technology is gradually replacing the old PSK-R signal modulation technology. It can be compatible with the original satellite navigation signal, and can make the navigation system achieve higher tracking accuracy and anti-multipath interference performance. BOC modulation has a broad application prospects. The research of synchronization technology has attracted the attention of scholars at home and abroad. The main contents of this thesis are as follows: 1. The general situation of GNSS system in the world is introduced. The signal modulation modes of several GNSS systems are studied. The emphasis is on the Galileo E1 band and the GPS L1 band. The modulation principle of CBOC signal modulation and TMBOC modulation is analyzed. The modulation principle of dual code AltBOC, standard AltBOC and constant envelope AltBOC signal modulation is analyzed in detail in Galileo E5 band. 2. The technique of generating navigation signal in GPS L1G GalileoE1 and E5 band is studied. The GPS C / A code and GPS Weil code are generated by mathematical derivation. The GPS L1 band signal is simulated. The Galileo E1 band signal is studied, and the data channel signal and pilot channel signal of E1 band are simulated by MATLAB. The signal composition, spread spectrum code generation and subcarrier generation of Galileo E5 band are studied, and the Galileo E5 signal is simulated by MATLAB. 3. The traditional navigation signal acquisition method is introduced, the tracking accuracy and multipath error of various navigation signals are analyzed, and the acquisition algorithm based on FFT matched filter is studied emphatically. The matched filter algorithm which can be processed in parallel is studied from the aspects of principle and implementation. The acquisition of GPS L1 civil navigation signal is accomplished by this method and the acquisition results are obtained.
【學(xué)位授予單位】：中國(guó)科學(xué)院研究生院（國(guó)家授時(shí)中心）
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：P228.4

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