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差分跳频(DFH)是一种新的短波跳频技术,它主要归结为一种G函数算法,这种G函数集跳频图案、信息调制与解调于一体。它的通信机理与常规跳频完全不同,较好的解决了数据速率和跟踪、干扰等问题,代表了当前短波通信的一个重要发展方向。鉴于此,在研究G函数算法原理的基础之上,重点对短波差分跳频信号的发生器进行基于FPGA的整体优化设计,并在软件和硬件环境下进行仿真与实现,从而指导工程实践。
Differential Hop Frequency Hopping (DFH) is a new shortwave frequency hopping technique, which is mainly attributed to a G-function algorithm. This G-function set combines frequency hopping pattern, information modulation and demodulation. Its communication mechanism is completely different from the conventional frequency hopping, which solves the problems of data rate, tracking and interference and represents an important development direction of current shortwave communications. In view of this, on the basis of researching the principle of G-function algorithm, we focus on the optimization design of short-wave differential frequency-hopping signal generator based on FPGA and carry out simulation and implementation in software and hardware environment to guide the engineering practice.