發(fā)布時(shí)間：2018-01-16 07:28

  本文關(guān)鍵詞：無(wú)人機(jī)數(shù)據(jù)傳輸擴(kuò)跳頻混合技術(shù)研究　出處：《南京理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： DS-FH混合擴(kuò)頻技術(shù) 軟件仿真 同步技術(shù) 多徑干擾

【摘要】：隨著無(wú)人機(jī)地空通信對(duì)抗干擾性能要求的不斷提高,傳統(tǒng)的單一擴(kuò)頻技術(shù)已經(jīng)不能滿足需要。本文主要采用Mat1ab/Simulink軟件仿真的方法,對(duì)DS-FH混合擴(kuò)頻技術(shù)進(jìn)行了深入而詳細(xì)的研究。在對(duì)傳統(tǒng)的直接擴(kuò)頻、跳頻技術(shù)和其各自的同步方式進(jìn)行認(rèn)真研究的基礎(chǔ)上,本文推導(dǎo)出了DS-FH混合擴(kuò)頻系統(tǒng)的數(shù)學(xué)模型,由此建立了系統(tǒng)的Simulink仿真模型,并通過(guò)測(cè)試得出高斯信道下的系統(tǒng)特性曲線。其次,提出了一種適用于DS-FH混合擴(kuò)頻系統(tǒng)的綜合同步方法,并進(jìn)行了相關(guān)的建模仿真,分析和驗(yàn)證了該方案的可行性和可靠性。最后,對(duì)無(wú)人機(jī)不同飛行狀態(tài)下的多徑衰落信道和單頻、多頻、部分頻帶干擾下的信道進(jìn)行了初步的建模仿真,得出了相應(yīng)的系統(tǒng)誤碼率曲線。
[Abstract]:With the continuous improvement of anti-jamming performance requirements of UAV ground-to-air communication, the traditional single spread spectrum technology can not meet the needs. This paper mainly adopts the method of Mat1ab/Simulink software simulation. The DS-FH hybrid spread spectrum technology is studied in depth and in detail. On the basis of the traditional direct spread spectrum, frequency hopping technology and their respective synchronization methods are carefully studied. In this paper, the mathematical model of DS-FH hybrid spread spectrum system is derived, and the Simulink simulation model of the system is established, and the system characteristic curve under Gao Si channel is obtained by testing. Secondly. A Synthetical synchronization method suitable for DS-FH hybrid spread spectrum system is proposed, and related modeling and simulation are carried out. The feasibility and reliability of the scheme are analyzed and verified. Finally. The multipath fading channel and single-frequency, multi-frequency, partial band interference channel of UAV under different flight states are modeled and simulated, and the corresponding system BER curves are obtained.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN914.42

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本文編號(hào)：1432141