无人机数据传输扩跳频混合技术研究

发布时间：2018-01-16 07:28

本文关键词：无人机数据传输扩跳频混合技术研究　出处：《南京理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着无人机地空通信对抗干扰性能要求的不断提高,传统的单一扩频技术已经不能满足需要。本文主要采用Mat1ab/Simulink软件仿真的方法,对DS-FH混合扩频技术进行了深入而详细的研究。在对传统的直接扩频、跳频技术和其各自的同步方式进行认真研究的基础上,本文推导出了DS-FH混合扩频系统的数学模型,由此建立了系统的Simulink仿真模型,并通过测试得出高斯信道下的系统特性曲线。其次,提出了一种适用于DS-FH混合扩频系统的综合同步方法,并进行了相关的建模仿真,分析和验证了该方案的可行性和可靠性。最后,对无人机不同飞行状态下的多径衰落信道和单频、多频、部分频带干扰下的信道进行了初步的建模仿真,得出了相应的系统误码率曲线。
[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.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN914.42

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