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《轉(zhuǎn)發(fā)式gps欺騙干擾機(jī)的仿真建模與實(shí)現(xiàn)_畢業(yè)論文》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、杭州電子科技大學(xué)本科畢業(yè)設(shè)計(jì)本科畢業(yè)設(shè)計(jì)(2013屆)題目轉(zhuǎn)發(fā)式GPS欺騙干擾機(jī)的仿真建模與實(shí)現(xiàn)學(xué)院通信工程學(xué)院專業(yè)信息對(duì)抗技術(shù)班級(jí)09083511學(xué)號(hào)09083132學(xué)生姓名張喜合指導(dǎo)教師孫閩紅完成日期2012年12月31杭州電子科技大學(xué)本科畢業(yè)設(shè)計(jì)摘要隨著科學(xué)技術(shù)的進(jìn)步,GPS系統(tǒng)得到了廣泛的應(yīng)用。有效地利用GPS干擾技術(shù)破壞對(duì)方的導(dǎo)航系統(tǒng)并實(shí)現(xiàn)對(duì)己方的有效隱蔽和保護(hù),是GPS技術(shù)在軍事領(lǐng)域的一個(gè)新應(yīng)用。在眾多干擾技術(shù)中,轉(zhuǎn)發(fā)式干擾有著發(fā)射功率低,不需要了解GPS信號(hào)偽碼結(jié)構(gòu),實(shí)現(xiàn)簡(jiǎn)單等優(yōu)點(diǎn)。本文主要研究GPS轉(zhuǎn)發(fā)式干擾原理。在分析了GPS定位原理的基礎(chǔ)上,對(duì)轉(zhuǎn)發(fā)式干擾進(jìn)行了可行性分析,
2、完成了轉(zhuǎn)發(fā)式干擾原理樣機(jī)的設(shè)計(jì)與實(shí)現(xiàn),并著重對(duì)干擾機(jī)的射頻電路進(jìn)行了研究。轉(zhuǎn)發(fā)式干擾主要是利用信號(hào)的自然延時(shí)來實(shí)施干擾。因此,干擾信號(hào)與導(dǎo)航信號(hào)完全相同,只是延遲時(shí)間有所不同。另外轉(zhuǎn)發(fā)式干擾信號(hào)經(jīng)過功率放大,信號(hào)的幅度大于導(dǎo)航信號(hào)的幅度,GPS接收機(jī)完全有可能捕獲到轉(zhuǎn)發(fā)后的信號(hào)。從而使GPS接收機(jī)獲得錯(cuò)誤的偽距,達(dá)不到精確的定位。本文在第一章和第二章中不僅詳細(xì)敘述了GPS的發(fā)展歷程和發(fā)展現(xiàn)狀,還對(duì)它的發(fā)展前景做了大致的估計(jì),并簡(jiǎn)要概括了GPS信號(hào)的基本組成。在第三章,主要對(duì)干擾機(jī)的各部分功能進(jìn)行細(xì)化和進(jìn)一步的模塊化設(shè)計(jì),將總體模型分為三個(gè)單元,包括:信號(hào)接收單元、干擾信號(hào)生成單元、干擾信號(hào)發(fā)
3、送單元。第四章則著重于對(duì)仿真的結(jié)果進(jìn)行簡(jiǎn)要分析和比較,驗(yàn)證理論依據(jù)的真實(shí)性。關(guān)鍵字:全球定位系統(tǒng);轉(zhuǎn)發(fā)式干擾;模塊化設(shè)計(jì),仿真31杭州電子科技大學(xué)本科畢業(yè)設(shè)計(jì)AbstractWiththedevelopmentofthetechnology,TheGlobalPositionSystemhasbeenusedwidely.ThenewapplicationofGPStechnologyinthemilitaryfieldishowtodestroyenemyNavigationsystemandenshroudeffectivelyourselvesutilizingtheGPScounte
4、rtechnology.IntheGPSinterferencetechnology,theretransmittedjamminghastheadvantagesoflowsendingpower,unawarenessofthePRNcodestructureofGPSsignalandsimpleimplementation.Theretransmittedjammingprincipleisstudiedinthisdissertation.BasedontheanalysisoftheGPSpositiontheory,theeffectofjammingprototypeisst
5、udiedandeverypartofthejammingprototypeisanalyzed.Thedesignandimplementationofjammingprototypehavebeendonetoo.Theretransmittedjammingmethodmainlymakesuseofsignal’snaturaldelay,sothejammingsignaliscompletelythesameasnavigatingsignal,exceptforthedifferentlydelaytime.Besides,thepowerofretransmittedjamm
6、ingsignalisgreaterthanthenavigationsignal,SOGPSreceiverwillprobablyreceivethejammingsignal,whichresultsinit’sgettingthefalsepseudorangeandnotbeingpositionprecisely.Atthefirstandthesecondchapter,InotonlyexplainthedevelopmenthistoryandthedevelopingsituationofGPSindetail,butalsoestimateroughlyitsdevel
7、opmentdirection,inaddition,thebasiccomponentsofGPSissimplysummarized.Atthethirdchapter,themaincontentisthatthefunctionofjammingprototypeisthemodularizationdesigned.Thewholemoduleisdividedintothreepartsinclu