本文選題：GNSS + 多模定位　； 參考：《遼寧工程技術(shù)大學(xué)》2013年碩士論文

【摘要】：本文在全球?qū)Ш叫l(wèi)星系統(tǒng)(Global Navigation Satellite System,GNSS)迅猛發(fā)展以及北斗系統(tǒng)(BDS)覆蓋亞太地區(qū)的大背景下,對多模定位的理論和方法進(jìn)行了研究,其次對接收機(jī)自主完好性監(jiān)測(RAIM)算法進(jìn)行了研究。在理論介紹的基礎(chǔ)上,依托河北省連續(xù)運(yùn)行參考站系統(tǒng)(HBCORS)搭建BDS/GPS區(qū)域試驗(yàn)網(wǎng),并采用該網(wǎng)提供的BDS/GPS數(shù)據(jù),進(jìn)行了實(shí)時(shí)和事后的計(jì)算分析,主要工作概括如下： (1)介紹了GPS、GLONASS、Galileo系統(tǒng)以及BDS四個(gè)全球?qū)Ш叫l(wèi)星系統(tǒng)概況,對比四個(gè)全球?qū)Ш叫l(wèi)星系統(tǒng)在頻率、信號和構(gòu)建方面的異同。介紹了定位過程中誤差產(chǎn)生的來源,以及本文中消除電離層誤差、對流層誤差、衛(wèi)星鐘差、接收機(jī)鐘差和多路徑效應(yīng)誤差的具體方法。 (2)介紹了各個(gè)全球?qū)Ш叫l(wèi)星系統(tǒng)的時(shí)間系統(tǒng)和坐標(biāo)系統(tǒng),指出GNSS多模定位過程中必須解決的主要問題,時(shí)間統(tǒng)一和空間統(tǒng)一。根據(jù)GPS單點(diǎn)定位原理以及不同類型衛(wèi)星(GEO、MEO、IGSO)位置計(jì)算的方法推到出GNSS多模定位的原理和觀測數(shù)學(xué)模型,在此基礎(chǔ)上推導(dǎo)GNSS多模差分定位模型。 (3)根據(jù)BDS/GPS區(qū)域試驗(yàn)網(wǎng)提供的數(shù)據(jù),采用GNSS定位模型算法,計(jì)算點(diǎn)位坐標(biāo)、幾何精度因子(GDOP),對比偽距單點(diǎn)定位和差分定位下,不同導(dǎo)航衛(wèi)星系統(tǒng)(BDS、GPS和BDS/GPS)定位精度,比較分析BDS性能優(yōu)缺點(diǎn),得到一些有益結(jié)論。 (4)介紹了RAIM的基本概念、聚類分析的思想和相關(guān)距離的思想,以及基于聚類分析思想和相關(guān)距離的思想來改進(jìn)RAIM算法的方法,并以實(shí)際數(shù)據(jù)計(jì)算結(jié)果作為論證支持。 (5)將以上研究內(nèi)容在C++開發(fā)平臺(tái)上實(shí)現(xiàn)程序化設(shè)計(jì),其中部分模塊可以良好的嵌入BDS/GPS實(shí)時(shí)通訊系統(tǒng)中,實(shí)現(xiàn)實(shí)時(shí)定位解算。
[Abstract]:In this paper, the theory and method of multi-mode positioning are studied under the background of the rapid development of Global Navigation Satellite system GNSS and Beidou system (BDSs) covering the Asia-Pacific region. Secondly, the receiver autonomous integrity monitoring (Ram) algorithm is studied. Based on the introduction of the theory, the BDS/GPS regional test network is built based on the continuous operation reference station system of Hebei province, and the BDS/GPS data provided by the network are used to calculate and analyze it in real time and afterwards. The main work is summarized as follows: This paper introduces the general situation of GPS GLONASS Galileo system and BDS four global navigation satellite systems, and compares the similarities and differences between the four global navigation satellite systems in frequency, signal and construction. This paper introduces the source of the errors in the positioning process, and the methods of eliminating the ionospheric errors, tropospheric errors, satellite clock errors, receiver clock errors and multipath effect errors in this paper. This paper introduces the time system and coordinate system of each global navigation satellite system, and points out the main problems that must be solved in the process of GNSS multi-mode positioning, namely, the unification of time and space. According to the principle of GPS single point positioning and the method of calculating the positions of different types of satellites, the principle and observation mathematical model of GNSS multimode positioning are deduced. On this basis, the multimode differential positioning model of GNSS is deduced. According to the data provided by the BDS/GPS regional test network, using the GNSS positioning model algorithm, the point coordinates and geometric precision factors are calculated. The positioning accuracy of different navigation satellite systems is compared under pseudo-range single point positioning and differential positioning. The advantages and disadvantages of BDS are compared and some useful conclusions are obtained. This paper introduces the basic concept of RAIM, the idea of clustering analysis and the thought of correlation distance, and the method of improving RAIM algorithm based on the idea of clustering analysis and the thought of correlation distance. 5) the above research contents are programmed on C development platform. Some of the modules can be well embedded in the BDS/GPS real-time communication system to realize the real-time positioning solution.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P228.4

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