【正文】 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) （ 2020 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) 信息對抗技術(shù) 班 級 09083511 學(xué) 號 09083132 學(xué)生姓名 張喜合 指導(dǎo)教師 孫閩紅 完成日期 2020 年 12 月 杭州電子科技大學(xué)本科畢業(yè)設(shè)計(jì) 1 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 對方的導(dǎo)航系統(tǒng)并實(shí)現(xiàn)對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信號偽碼結(jié)構(gòu)，實(shí)現(xiàn)簡單等優(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 轉(zhuǎn)發(fā)式干擾 進(jìn)行了可行性分析，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的自然延時(shí)來實(shí)施干擾。因此，干擾信號與導(dǎo)航信號完全相同，只是延遲時(shí)間有所不同。另外轉(zhuǎn)發(fā)式干擾信號經(jīng)過功率放大，信號的幅度大于導(dǎo)航信號的幅度， GPS 接收機(jī)完全有可能捕獲到轉(zhuǎn)發(fā)后的信號。從而使 GPS 接收機(jī)獲得錯誤的偽距，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，還對它的發(fā)展前景做了大致的估計(jì)，并簡要概括了 GPS 信號的基本組成。在第三章，主要 對干擾機(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：信號接收單元、干擾信號生成單元、干擾信號發(fā)送單元。 第四章則著重于對仿真的結(jié)果進(jìn)行簡要分析和比較，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 杭州電子科技大學(xué)本科畢業(yè)設(shè)計(jì) 2 Abstract With the development of the technology, The Global Position System has been used widely． The new application of GPS technology in the military field is how to destroy enemy Navigation system and enshroud effectively ourselves utilizing the GPS counter technology． In the GPS interference technology, the retransmitted jamming has the advantages of low sending power, unawareness of the PRN code structure of GPS signal and simple implementation． The retransmitted jamming principle is studied in this dissertation． Based on the analysis of the GPS position theory, the effect of jamming prototype is studied and every part of the jamming prototype is analyzed． The design and implementation of jamming prototype have been done too． The retransmitted jamming method mainly makes use of signal’s natural delay, so the jamming signal is pletely the same as navigating signal， except for the differently delay time． Besides， the power of retransmitted jamming signal is greater than the navigation signal， SO GPS receiver will probably receive the jamming signal， which results in it’s getting the false pseudo range and not being position precisely． At the first and the second chapter ,I not only explain the development history and the developing situation of GPS in detail, but also estimate roughly its development direction, in addition, the basic ponents of GPS is simply summarized． At the third chapter, the main content is that the function of jamming prototype is the modularization designed． The whole module is divided into three parts including signalreceiving unit， jamming signal generation unit and jamming signal transmission unit, and the function of each part is described． The fourth chapter emphasizes analyzing and paring different simulation result in brief, which can be used of checking the authenticity of the theory basis． Key words： GPS， Retransmitted Jamming， Modularization designed， Simulation 杭州電子科技大學(xué)本科畢業(yè)設(shè)計(jì) 目 錄 1 引言 ................................................................................................................................ 1 2 GPS 簡介及發(fā)展現(xiàn)狀 ................................................................................................... 3 GPS 簡介 ............................................................................................................. 3 GPS 分類及應(yīng)用特點(diǎn) ......................................................................................... 3 GPS 發(fā)展現(xiàn)狀 ..................................................................................................... 4 GPS 發(fā)展前景 ..................................................................................................... 4 GPS 信號 ............................................................................................................. 5 3 轉(zhuǎn)發(fā)式 GPS 欺騙干擾機(jī) ............................................................................................. 7 干擾機(jī) ................................................................................................................. 7 轉(zhuǎn)發(fā)式干擾簡介 ................................................................................................. 7 轉(zhuǎn)發(fā)式 GPS 欺騙干擾機(jī) 課題的提出 ............................................................... 8 轉(zhuǎn)發(fā)式 GPS 欺騙干擾機(jī)設(shè)計(jì)要點(diǎn) ................................................................. 10 轉(zhuǎn)發(fā)式 GPS 欺騙干擾機(jī)發(fā)展方向 ................................................................. 11 建立轉(zhuǎn)發(fā)式 GPS 欺騙干擾機(jī)動態(tài)模型 ......................................................... 12 干擾信號接收單元的實(shí)現(xiàn) ............................................................................ 13 干擾信號發(fā)送單元的實(shí)現(xiàn) ............................................................................ 16 干擾信號生成單元的實(shí)現(xiàn) ............................................................................ 18 4 仿真效果分析 ............................................................................................................. 22 GPS 信號生成 ................................................................................................... 22 GPS 信號的延時(shí)轉(zhuǎn)發(fā) ....................................................................................... 23 GPS 轉(zhuǎn)發(fā)信號的干擾 ....................................................................................... 25 5 結(jié)論 ............................................................................................................................. 27 6 致謝 ............................................................................................................................. 28 7 參考文獻(xiàn) ..................................................................................................................... 29 杭州電子科技大學(xué)本科畢業(yè)設(shè)計(jì) 1 1 引言 自 1957 年前蘇聯(lián)將世界第一顆人造衛(wèi)星送入環(huán)地軌道以來，針對衛(wèi)星信號的干擾與抗干擾技術(shù)的發(fā)展日新月異。 GPS 是英文 Global Positioning System（全球定位系統(tǒng)）的簡稱。 GPS 起始于 1958 年美國軍方的一個(gè)項(xiàng)目， 1964 年投入使用。 20 世紀(jì) 70 年代，美國陸?？杖娐?lián)合研制了新一代衛(wèi)星定位系統(tǒng) GPS 。主要目的是為陸?？杖箢I(lǐng)域提供實(shí)時(shí)、全天候和全球性的導(dǎo)航服務(wù)，并用于情報(bào)收集、核爆監(jiān)測和應(yīng)急通訊等一些軍事目