發(fā)布時(shí)間：2018-06-02 02:06

  本文選題：GNSS + 信號(hào)源　； 參考：《哈爾濱工業(yè)大學(xué)》2017年碩士論文

【摘要】：全球?qū)Ш叫l(wèi)星系統(tǒng)(Global Navigation Satellite System,GNSS)是美國(guó)主導(dǎo)、以軍事目的而建立,目前已經(jīng)擴(kuò)展到很多領(lǐng)域,在國(guó)防軍事、航天航空、大地測(cè)量等領(lǐng)域有著廣泛應(yīng)用。在定位導(dǎo)航過(guò)程中,各種干擾可以看作衛(wèi)星本信號(hào)的多徑信號(hào)來(lái)處理�；诖�,本文主要目的是設(shè)計(jì)一款多功能導(dǎo)航信號(hào)源,能夠產(chǎn)生真實(shí)的GPS導(dǎo)航信號(hào),并且能夠模擬傳播環(huán)境中多徑信號(hào)的各種特性。首先,本文闡述了GPS系統(tǒng)的基本原理,從衛(wèi)星導(dǎo)航系統(tǒng)的組成、衛(wèi)星導(dǎo)航定位原理、衛(wèi)星信號(hào)參數(shù)計(jì)算算法、接收機(jī)參數(shù)計(jì)算算法四個(gè)方面進(jìn)行了詳細(xì)分析,并對(duì)衛(wèi)星參數(shù)和接收機(jī)參數(shù)進(jìn)行了實(shí)際運(yùn)算,給出了計(jì)算結(jié)果。然后,本文提出了實(shí)施多徑干擾的系統(tǒng)模型,提出了多徑信號(hào)的設(shè)計(jì)方法,從選星策略和干擾位置選取兩個(gè)方面進(jìn)行了論證,該方法主要依據(jù)接收機(jī)進(jìn)行位置解算過(guò)程中對(duì)各衛(wèi)星偽距變化的敏感程度不同而進(jìn)行的。在選星策略方面,本文提出了偽距法、投影法兩種方法,經(jīng)證明,這兩種方法本質(zhì)上是一致,可依據(jù)不同的應(yīng)用場(chǎng)景擇優(yōu)利用;在干擾位置選取上,本文從偏離方向選取和偏離值選取兩個(gè)方面進(jìn)行論證。因?yàn)閷?dǎo)航衛(wèi)星的空間分布不同,其對(duì)偏離方向的牽引也各不相同,基于此,本文提出了一種基于導(dǎo)航衛(wèi)星空間分布選取牽引方向的方法。對(duì)偏離值的選取主要基于躲避接收機(jī)的RAIM檢測(cè)進(jìn)行論證。為了既要以最小的代價(jià)達(dá)到最大的偏離效果,同時(shí)還要盡可能避免被接收機(jī)檢測(cè)出來(lái)。本文詳細(xì)分析了接收機(jī)RAIM檢測(cè)算法對(duì)多徑干擾的影響,提出了躲避RAIM檢測(cè)的多徑信號(hào)生成算法。仿真結(jié)果顯示,當(dāng)利用3個(gè)多徑信號(hào)時(shí),就可以達(dá)到理想的偏離效果,并且能很好地躲避接收機(jī)的RAIM檢測(cè)。最后,本文基于對(duì)LabVIEW平臺(tái)的研究,設(shè)計(jì)出多功能信號(hào)源,對(duì)每個(gè)模塊給出了詳細(xì)的設(shè)計(jì)流程和設(shè)計(jì)方法,展示了軟件設(shè)計(jì)界面,簡(jiǎn)單介紹了各部分參數(shù)設(shè)置,并對(duì)各部分功能進(jìn)行了分析驗(yàn)證,并重點(diǎn)設(shè)計(jì)了多徑信號(hào)生成部分。為了使接收機(jī)能充分演示多徑干擾,設(shè)計(jì)了定點(diǎn)、圓周、直線、特定方向、軌跡共5種欺騙模式,在每種模式中,可以通過(guò)設(shè)置多徑信號(hào)的增益、時(shí)延來(lái)控制接收機(jī)定位結(jié)果。通過(guò)使用安卓手機(jī)作為接收機(jī)進(jìn)行測(cè)試,可以很好地達(dá)到干擾定位的目的,驗(yàn)證了多徑信號(hào)理論設(shè)計(jì)的準(zhǔn)確性和可行性。
[Abstract]:Global Navigation Satellite System (GNSS), which is the dominant in the United States, is established for military purposes. It has been extended to many fields, and has been widely used in the fields of defense, military, aerospace, geodetic and other fields. In the process of positioning and navigation, various kinds of interference can be treated as the multipath signal of the satellite signal. Based on this, the main purpose of this paper is to design a multi-function navigation signal source, which can produce real GPS navigation signals and can simulate the various characteristics of multipath signals in the communication environment. First, the basic principles of the GPS system are expounded, from the composition of the satellite navigation system, the principle of satellite navigation and positioning, the calculation algorithm of the satellite signal parameters. Four aspects of the calculation algorithm of the receiver parameter are analyzed in detail, and the actual operation of the satellite parameters and the receiver parameters is carried out, and the calculation results are given. Then, the system model of the multipath interference is put forward, and the design method of the multipath signal is put forward, and two aspects are proved from the selection of the star selection strategy and the location of the interference position. This method is mainly based on the difference in the sensitivity of the satellite pseudo range during the receiver's position calculation. In the aspect of the star selection strategy, two methods are proposed in this paper, the pseudo distance method and the projection method. It is proved that the two methods are essentially the same, and can be used according to the different application scenes. In this paper, the deviation direction selection and deviation value are selected from two aspects. Because the spatial distribution of the navigation satellite is different, the traction of the deviation direction is different. Based on this, a method of selecting the direction of traction based on the spatial distribution of the navigation satellite is proposed. The selection of the deviation value is mainly based on the RAIM detection of the evade receiver. In order to achieve the maximum deviation at the minimum cost and avoid detection by the receiver as much as possible, the effect of the receiver RAIM detection algorithm on the multipath interference is analyzed in detail, and a multipath signal generation algorithm is proposed to avoid RAIM detection. The simulation results show that when 3 multipath signals are used, The ideal deviation effect can be achieved and the RAIM detection of the receiver can be avoided. Finally, based on the research of the LabVIEW platform, a multi-function signal source is designed, the detailed design process and design method are given for each module, the software design interface is displayed, and the parameters of each part are briefly introduced, and the parts of each part are introduced. In order to make the receiver fully demonstrate the multipath interference, the receiver designed a fixed point, a circle, a straight line, a specific direction, and a trajectory in which 5 deception modes are designed. In each mode, the receiver positioning results can be controlled by setting the gain and delay of the multipath signal. As a receiver, Zhuo mobile phone can test the jamming location very well, and verify the accuracy and feasibility of the theoretical design of multipath signal.
【學(xué)位授予單位】：哈爾濱工業(yè)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10條

1 耿正霖;聶俊偉;王飛雪;;GNSS抗欺騙干擾技術(shù)研究[J];全球定位系統(tǒng);2013年04期

2 李四海;劉洋;張會(huì)鎖;張曉冬;;慣性信息輔助的衛(wèi)星導(dǎo)航欺騙檢測(cè)技術(shù)[J];中國(guó)慣性技術(shù)學(xué)報(bào);2013年03期

3 張榮;;基于DAQmx驅(qū)動(dòng)與LABVIEW的數(shù)據(jù)采集系統(tǒng)設(shè)計(jì)[J];計(jì)算機(jī)應(yīng)用與軟件;2011年03期

4 劉麗麗;王可東;;衛(wèi)星信號(hào)模擬器研究現(xiàn)狀及發(fā)展趨勢(shì)[J];全球定位系統(tǒng);2010年03期

5 盧丹;吳仁彪;王磊;;一種通用的GPS多類干擾抑制方法[J];信號(hào)處理;2010年05期

6 何清舉;孫前貴;;利用GNSS實(shí)現(xiàn)高軌衛(wèi)星自主導(dǎo)航的新方案[J];飛行器測(cè)控學(xué)報(bào);2010年01期

7 郭淑艷;郭金運(yùn);張莉娜;;星載GPS載波相位周跳探測(cè)方法[J];測(cè)繪科學(xué);2006年04期

8 高山,陳武,胡叢偉,陳永奇,丁曉利;高精度GPS定位的精密電離層模型(英文)[J];Transactions of Nanjing University of Aeronautics & Astronau;2005年02期

9 朱喜明,王存良;利用三顆導(dǎo)航衛(wèi)星進(jìn)行二維定位的解算模型及其仿真解算[J];全球定位系統(tǒng);2004年04期

10 張?jiān)迄i,繆棟,楊小岡,吳強(qiáng);GPS偽距導(dǎo)航定位解算新算法研究[J];電子科技;2004年01期

相關(guān)博士學(xué)位論文 前1條

1 王李軍;GPS接收機(jī)抗干擾若干關(guān)鍵技術(shù)研究[D];南京理工大學(xué);2006年

，

本文編號(hào)：1966818