發(fā)布時(shí)間：2018-04-05 11:52

  本文選題：GPS干擾　切入點(diǎn)：BOC調(diào)制　出處：《西安電子科技大學(xué)》2013年碩士論文

【摘要】：GPS是一種可以定時(shí)和測(cè)距的空間交會(huì)定點(diǎn)導(dǎo)航系統(tǒng),可以向全球用戶提供連續(xù)、實(shí)時(shí)、高精度的三維位置、速度和時(shí)間信息。隨著GPS在外軍裝備中的廣泛應(yīng)用,對(duì)GPS干擾的研究也具有越來越重要的意義。本文分析了GPS信號(hào)的特點(diǎn),研究了GPS信號(hào)的調(diào)制方式,特別是BOC調(diào)制的特點(diǎn),建立了GPS信號(hào)仿真模型,證明了采用BOC調(diào)制的GPS信號(hào)與采用BPSK調(diào)制的信號(hào)相比,具有較強(qiáng)的抗多路徑效應(yīng)能力和良好的跟蹤性能,以及抗干擾性能。論文建立了欺騙和壓制兩種干擾模型,研究了單音干擾、多音干擾、噪聲調(diào)頻、噪聲調(diào)幅等多種壓制干擾技術(shù),以及轉(zhuǎn)發(fā)干擾等欺騙干擾技術(shù),并對(duì)各種干擾技術(shù)進(jìn)行了建模和仿真,得到了時(shí)域、頻域干擾曲線,以及信干比與誤碼率的關(guān)系曲線,從而實(shí)現(xiàn)了干擾性能的評(píng)估。
[Abstract]:GPS is a kind of space rendezvous fixed-point navigation system which can timing and ranging. It can provide global users with continuous, real-time, high-precision three-dimensional position, speed and time information.With the wide application of GPS in foreign military equipment, the study of GPS interference is becoming more and more important.This paper analyzes the characteristics of GPS signal, studies the modulation mode of GPS signal, especially the characteristic of BOC modulation, establishes the simulation model of GPS signal, and proves that the GPS signal modulated by BOC is compared with the signal modulated by BPSK.It has strong ability to resist multipath effect, good tracking performance, and anti-interference performance.In this paper, two kinds of jamming models are established, such as single tone jamming, multi-tone jamming, noise frequency modulation, noise amplitude modulation, and deception jamming technology such as forward jamming.The interference curves in time domain and frequency domain, as well as the relationship between signal-to-interference ratio and bit error rate, are obtained by modeling and simulation of various jamming techniques, so that the jamming performance can be evaluated.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：P228.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 方有培,董爾令;對(duì)GPS制導(dǎo)導(dǎo)彈的有效干擾途徑分析[J];航天電子對(duì)抗;2001年02期

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本文編號(hào)：1714646