本文選題：雙模GNSS + 定位解算��； 參考：《廈門(mén)大學(xué)》2014年碩士論文

【摘要】：GNSS,即全球?qū)Ш叫l(wèi)星系統(tǒng)(Global Navigation Satellite System)現(xiàn)已廣泛應(yīng)用于通信、測(cè)繪、軍工等領(lǐng)域,而且其應(yīng)用范圍仍在不斷擴(kuò)大。出于國(guó)防及民用發(fā)展考慮,我國(guó)自主研究建設(shè)了北斗衛(wèi)星導(dǎo)航系統(tǒng),繼美、俄后也擁有了獨(dú)自的衛(wèi)星導(dǎo)航系統(tǒng)。北斗系統(tǒng)的獨(dú)立運(yùn)行能力在軍事上保證了國(guó)家的安全穩(wěn)定,在民用上也將促進(jìn)一批產(chǎn)業(yè)的發(fā)展。為了推廣民用領(lǐng)域的應(yīng)用,保證導(dǎo)航服務(wù)的連續(xù)性及精確性,與世界上其他衛(wèi)星導(dǎo)航系統(tǒng)的協(xié)作定位尤為重要。藉由我國(guó)2012年底對(duì)外正式公布了北斗系統(tǒng)接口控制文件(Interface Control Document)這一契機(jī),本文研究了GPS/BD雙模情況下接收機(jī)定位解算技術(shù)的實(shí)現(xiàn)。針對(duì)雙模定位解算過(guò)程中的技術(shù)進(jìn)行了算法上的研究與改進(jìn),并應(yīng)用于GPS/BD雙�；鶐酒ㄎ唤馑丬浖糠值脑O(shè)計(jì)實(shí)現(xiàn)。論文的主要工作包括以下幾個(gè)方面： (1)本文分析了北斗二代導(dǎo)航系統(tǒng)與GPS的異同,包括空間星座、信號(hào)波段、時(shí)間系統(tǒng)及空間坐標(biāo)系。首先研究了北斗單模系統(tǒng)定位方法,并實(shí)現(xiàn)了北斗單模接收機(jī)定位解算各軟件子模塊,特別注意區(qū)分了北斗星座不同軌道的衛(wèi)星。接著,針對(duì)GPS/BD雙模系統(tǒng)組合定位的難點(diǎn)與其相應(yīng)處理辦法進(jìn)行研究,討論了雙模聯(lián)合定位的基本原理和實(shí)現(xiàn)方法,包括雙模系統(tǒng)時(shí)空統(tǒng)一方法。 (2)本文在具體的雙模定位解算技術(shù)研究中,分別探討了雙模衛(wèi)星選星算法、雙模一致性檢測(cè)方法以及雙�？柭鼮V波定位。提出了一種適用于多衛(wèi)星星座情況下的衛(wèi)星選星算法,算法基于最優(yōu)幾何分布,能在保證性能前提下減少計(jì)算量；針對(duì)城市峽谷等強(qiáng)多徑環(huán)境,研究了有別于傳統(tǒng)“自頂向下”方法的“自底向上”衛(wèi)星一致性檢測(cè)方法,仿真表明方法在強(qiáng)多徑環(huán)境下性能更為穩(wěn)定；論文還對(duì)雙�？柭懈录捌湫孪z測(cè)進(jìn)行了研究與實(shí)現(xiàn),使雙模定位結(jié)果更加平滑連續(xù)。 (3)本文在搭建了接收機(jī)硬件平臺(tái)的基礎(chǔ)上,整合了GPS/BD雙模接收機(jī)基帶芯片定位解算部分的軟件框架,將GPS與BD相應(yīng)軟件子模塊進(jìn)行了統(tǒng)一處理和實(shí)現(xiàn)。雙模接收機(jī)路測(cè)運(yùn)行正常,并對(duì)定位能力及定位性能進(jìn)行了測(cè)試。
[Abstract]:GNSS, the global navigation satellite system (Global Navigation Satellite System), is now widely used in communications, mapping, military industry and other fields, and its application range is still expanding. For national defense and civil development, our own research and construction of the Beidou satellite navigation system, after the United States, Russia has also own a satellite navigation system. The independent operational capability of the Beidou system ensures the security and stability of the country and will promote the development of a number of industries in civilian use. In order to promote the application of the civil field, ensure the continuity and accuracy of navigation services, it is particularly important to cooperate with other satellite navigation systems in the world. By the end of 2012, our country is formal. This paper has published the opportunity of Interface Control Document of the Beidou system. This paper studies the realization of the positioning solution of the receiver in the case of the double mode GPS/BD. The research and improvement of the algorithm in the process of the double mode positioning calculation are carried out and applied to the software part of the positioning solution of the GPS /BD dual mode baseband chip. The main work of the paper includes the following aspects:
(1) this paper analyzes the similarities and differences between the two generation of Beidou navigation system and GPS, including space constellation, signal band, time system and space coordinate system. First, the positioning method of the Beidou single mode system is studied, and the software sub modules of the Beidou single mode receiver are realized, and the satellite of the different orbit of the Beidou constellation is distinguished. The difficulty of the combined positioning of the GPS/BD dual mode system and its corresponding treatment methods are studied. The basic principle and realization method of the dual mode joint positioning are discussed, including the space-time unified method of the dual mode system.
(2) in this paper, we discuss the two mode satellite selection algorithm, the dual mode consistency detection method and the dual mode Calman filter positioning respectively in the dual mode positioning algorithm, and propose a satellite selection algorithm suitable for multi satellite constellations. The algorithm is based on the optimal geometric distribution, and can reduce the amount of calculation under the guarantee of performance. In the strong multipath environment such as urban canyons, the method of "bottom-up" satellite consistency detection different from the traditional "top-down" method is studied. The simulation shows that the method is more stable in the strong multi-path environment. The paper also studies and implements the double mode Calman serial update and its new interest detection, and makes the double mode positioning junction to make a double mode location junction. The fruit is more smooth and continuous.
(3) on the basis of the set up of the hardware platform of the receiver, this paper integrates the software framework of the GPS/BD dual mode receiver base band chip location calculation part, and carries out the unified processing and Realization of the GPS and the BD corresponding software sub modules. The dual mode receiver runs normally, and tests the positioning power and positioning performance.
【學(xué)位授予單位】：廈門(mén)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN965.5

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