高速跳频信号捕获方法研究大学生毕业论文（设计）（设计）.docVIP

摘 要 跳频通信以其抗干扰、抗衰落、抗截获能力强，兼有多址组网应用等诸多优点，不但在军事通信中得到广泛应用，用以保障部队在恶劣的战场电磁环境下建立可靠的通信，而且在民用移动通信中得到了广泛应用。跳频同步是跳频通信的关键技术之一，迅速、可靠地建立同步是跳频通信系统的重要环节。跳频同步分为跳频捕获和跳频跟踪两个阶段。其中同步捕获是跳频同步的难点，特别是在高跳速工作时需要精心设计方案才能实现同步捕获，它的性能关系到整个系统能否正常工作。研究跳频通信同步捕获技术可以为接收端提供更健壮、更快速的载波同步和更准确的帧同步。因此本文对高速跳频通信系统的捕获进行了理论研究和仿真研究。 本文首先在概述跳频通信的原理、研究现状及发展趋势地基础上，研究了跳频通信系统和高速跳频系统的原理。其次，研究了跳频通信序列的设计和及其理论限制，并对跳频频率合成器和跳频同步控制器进行了简单的理论分析。重点研究了高速跳频通信系统的同步技术，特别是高速跳频通信的捕获问题。对高速跳频的各种捕获方法进行了深入地探讨。论文对跳频通信系统的滑动相关捕获法、匹配滤波器捕获法、等待有哪些信誉好的足球投注网站式捕获法、快速出局式捕获法等捕获方法进行了详细的理论研究。同时在仿真软件MATLAB的环境下对滑动相关捕获法和等待有哪些信誉好的足球投注网站自同步法进行了仿真设计，并对捕获结果进行了详细地对比分析。 关键词：高速跳频；捕获；滑动相关；等待有哪些信誉好的足球投注网站自同步 Abstract Possessing the strong ability of anti-jamming,anti-fading, anti-interception as well as the application of multiple access, Frequency Hopping (FH) communication not only has been widely applied in the military communication, with the purpose of ensuring the army to build reliable communication under adverse electromagnetic surroundings, but also has been widely applied in civilian mobile communication. Synchronization is one of the key technologies of FH communication, and by which the FH system can transmit information accurately at high-speed. Synchronization is ordinarily accomplished in two stages: FH acquisition phase and FH tracking phase. FH acquisition has been studied in this thesis. Wherein the synchronization acquisition is the frequency hopping synchronization difficulties, especially when working at high speed jump requires careful design of the synchronization acquisition can be achieved, its performance to the entire system can work properly. This article was high-speed frequency hopping communication system for capturing the theoretical studies and simulation. In the first part of this paper, based on the overview of the research status, development trend and the principle of FH communication, this thesis described the FH communication system and the principle of high-speed frequency hopping system. Secondly, we research the design of the FH communication sequence