發(fā)布時(shí)間：2019-05-07 23:42

【摘要】：隨著GNSS(Global Navigation Satellite System)的快速發(fā)展,全球上空將面臨著數(shù)以百計(jì)的導(dǎo)航衛(wèi)星同時(shí)存在的局面。因此,GNSS系統(tǒng)間的兼容同步問題已逐漸成為一個(gè)全球性的問題。針對目前市場上GNSS系統(tǒng)的局限性,本文對新體制下的GNSS系統(tǒng)開展了研究。該GNSS系統(tǒng)具有兼容性強(qiáng)、同步性能優(yōu)異的獨(dú)特優(yōu)勢,并能根據(jù)用戶的不同需求,選擇不同的同步方案或者是這些同步方案一個(gè)集合,以達(dá)到最優(yōu)同步的效果。近些年,由新體制GNSS概念引申而出的多模GNSS不斷地被提出,并且在兼容GNSS系統(tǒng)方面發(fā)揮著巨大的作用。本文首先對GNSS的機(jī)理展開研究,由此得到GNSS系統(tǒng)研究的重要性,接著以多模GNSS的兼容性為研究對象,分析得出多模性主要是討論GNSS系統(tǒng)在導(dǎo)航系統(tǒng)的類型、信號(hào)的頻段和信號(hào)調(diào)制方式三個(gè)方面的特性。在確立此研究目的基礎(chǔ)上,對GNSS信號(hào)的時(shí)域特性、頻域特性以及相關(guān)特性做了詳細(xì)的分析,并根據(jù)其各個(gè)特性介紹了現(xiàn)有的主流同步算法,為做多模GNSS同步兼容打下基礎(chǔ)。接著,研究并設(shè)計(jì)了多模GNSS兼容接收可控制方案,該方案通過對實(shí)現(xiàn)流程做策略分析和詳細(xì)規(guī)劃,來達(dá)到可以依據(jù)用戶對同步性能的不同需求,將同步場景與本文所研究的目前主流的同步方法的一一匹配,實(shí)現(xiàn)單個(gè)系統(tǒng)兼容多種信號(hào)的目的,從而解決因GNSS系統(tǒng)與信號(hào)不匹配而造成的資源冗余問題,達(dá)到同步過程高效性和同步結(jié)果準(zhǔn)確性的需求。最終,解決了針對不同類型、不同信號(hào)以及不同頻段下GNSS系統(tǒng)達(dá)到最優(yōu)同步的問題,確保多模條件下的GNSS信號(hào)能夠達(dá)到同步的需求。在此基礎(chǔ)上,以GPS、GALILEO和BDS為例進(jìn)行同步仿真,仿真結(jié)果驗(yàn)證了該同步兼容方案的可靠性和準(zhǔn)確性。最后將同步的關(guān)鍵模塊通過FPGA+Power PC的軟件無線電平臺(tái)下進(jìn)行仿真驗(yàn)證,并通過時(shí)域和頻域的分析,說明了此同步方案可達(dá)到同步兼容接收的目的。
[Abstract]:With the rapid development of GNSS (Global Navigation Satellite System), hundreds of navigation satellites will exist simultaneously over the world. Therefore, the compatibility synchronization between GNSS systems has gradually become a global problem. Aiming at the limitation of the GNSS system in the market, this paper studies the GNSS system under the new system. The GNSS system has the unique advantage of strong compatibility and excellent synchronization performance, and can select different synchronization schemes or a set of these synchronization schemes according to the different needs of users, in order to achieve the optimal synchronization effect. In recent years, multi-mode GNSS, which is derived from the concept of new system GNSS, has been proposed and has played an important role in compatible GNSS systems. In this paper, the mechanism of GNSS is studied firstly, and the importance of GNSS system is obtained. Then, the compatibility of multi-mode GNSS is studied, and the conclusion is that the multi-mode is mainly about the type of GNSS system in navigation system. The frequency band of the signal and the modulation mode of the signal are three aspects. On the basis of this research purpose, the time-domain, frequency-domain and related characteristics of GNSS signal are analyzed in detail, and the existing mainstream synchronization algorithms are introduced according to each characteristic, which lays the foundation for multi-mode GNSS synchronization compatibility. Then, the multi-mode GNSS compatible receiver control scheme is studied and designed. The scheme can achieve the different requirements of synchronization performance according to the different requirements of users through policy analysis and detailed planning of the implementation process. In order to solve the problem of resource redundancy caused by the mismatch between the GNSS system and the signal, the synchronization scene is matched one by one with the current mainstream synchronization methods studied in this paper, so that a single system can be compatible with multiple signals. Achieve synchronization process efficiency and synchronization results accuracy requirements. Finally, the problem of optimal synchronization for GNSS systems in different types, different signals and different frequency bands is solved to ensure that the GNSS signals under multi-mode conditions can achieve the requirements of synchronization. On this basis, the synchronization simulation is carried out with GPS,GALILEO and BDS as examples. The simulation results verify the reliability and accuracy of the synchronization compatibility scheme. Finally, the key module of synchronization is simulated and verified under the software radio platform of FPGA Power PC, and the analysis of time domain and frequency domain shows that the synchronization scheme can achieve the purpose of synchronization compatible reception.
【學(xué)位授予單位】：沈陽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN967.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前9條

1 李廣參;馮永新;錢博;王迪難;;基于FPGA的BPSK信號(hào)載頻估計(jì)單元設(shè)計(jì)與實(shí)現(xiàn)[J];電子技術(shù);2014年07期

2 張媛;吳華兵;胡永輝;張虎;;基于分形重構(gòu)算法的TDDM-BOC信號(hào)捕獲[J];時(shí)間頻率學(xué)報(bào);2014年02期

3 康家方;王紅星;趙志勇;毛忠陽;劉錫國;劉傳輝;;新的擴(kuò)頻通信調(diào)制方法[J];通信學(xué)報(bào);2013年05期

4 魏敬法;;GNSS軟件接收機(jī)算法驗(yàn)證平臺(tái)設(shè)計(jì)與實(shí)現(xiàn)[J];通信技術(shù);2013年03期

5 周沖;詹毅;張福洪;;一種基于FPGA的直擴(kuò)信號(hào)檢測器設(shè)計(jì)[J];杭州電子科技大學(xué)學(xué)報(bào);2012年06期

6 馮永新;徐美榮;劉憲濤;劉芳;;基于BOC調(diào)制信號(hào)的頻域主瓣疊加捕獲算法[J];數(shù)據(jù)采集與處理;2012年01期

7 錢博;馮永新;潘成勝;劉芳;;TDDM-BOC調(diào)制信號(hào)參數(shù)估計(jì)方法[J];信息與控制;2011年04期

8 楊力;潘成勝;馮永新;薄煜明;;一種BOC調(diào)制信號(hào)的同步主峰檢測新算法[J];宇航學(xué)報(bào);2010年08期

9 ;Parameter estimation of DSSS signals in non-cooperative communication system[J];Journal of Systems Engineering and Electronics;2007年01期

相關(guān)博士學(xué)位論文 前1條

1 劉芳;新一代衛(wèi)星導(dǎo)航信號(hào)的同步新機(jī)理研究[D];南京理工大學(xué);2010年

相關(guān)碩士學(xué)位論文 前10條

1 周驥;可配置多模式GNSS信號(hào)同步技術(shù)研究[D];電子科技大學(xué);2015年

2 高瑞令;衛(wèi)星導(dǎo)航信號(hào)分析與參數(shù)估計(jì)[D];南京郵電大學(xué);2015年

3 馮大薩;多通道GNSS接收信號(hào)處理平臺(tái)設(shè)計(jì)[D];西安電子科技大學(xué);2014年

4 曹碩;衛(wèi)星導(dǎo)航信號(hào)捕獲算法的研究和實(shí)現(xiàn)[D];中北大學(xué);2014年

5 謝林伶;多系統(tǒng)衛(wèi)星導(dǎo)航信號(hào)源[D];電子科技大學(xué);2014年

6 李鋼;通用軟件無線電平臺(tái)基帶處理板的設(shè)計(jì)與實(shí)現(xiàn)[D];北京郵電大學(xué);2014年

7 劉晉東;基于FPGA的軟件無線電平臺(tái)硬件鏈路的研究與實(shí)現(xiàn)[D];北京郵電大學(xué);2014年

8 王冉;GNSS測評(píng)系統(tǒng)與顯控軟件開發(fā)[D];北京郵電大學(xué);2013年

9 蘇麗娜;GNSS軟件接收機(jī)捕獲與跟蹤模塊設(shè)計(jì)和實(shí)現(xiàn)[D];江蘇科技大學(xué);2013年

10 王剛;基于BOC調(diào)制方式新型直捕技術(shù)研究[D];哈爾濱工程大學(xué);2013年

，

本文編號(hào)：2471455