摘要
本文首先研究了Costas环的结构和原理,然后,利用FPGA设计了环路中的各个模块,并对设计所需的参数进行了细致的推导,最后,结合一个实际工程给出了仿真结果,仿真结果证明本文设计的Costas环跟踪速度快、频率误差小,能够满足实际需求。
In this paper, the structure and principle of Costas loop are investigated first. Then all the modules of Costas loop are designed based on FPGA, and the parameters are derived accurately. Finally, combined with an actual case, the simulation is conducted. The simulation results show that the designed Costas loop has the advantage of high tracking speed and small frequency error, and can meet the actual demand.
出处
《现代导航》
2015年第3期294-297,共4页
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