本文设计一种适用于海上通信的宽带高速跳频信息同步方法,通过分析前导信号的结构,定时同步的基本构成。在定时粗同步方面采用了计算相关峰的方式,在定时精同步方面针对跳频图案和动态密钥完成定时的精确同步。为验证同步方法的正确性,在频域50%干扰下进行仿真,结果表明在-8dB信噪比的情况下,同步方法能达到很高的正确率,具有实用价值。
This paper designs a broadband high-speed frequency hopping information synchronisation method applicable to maritime communications, by analysing the structure of the leading signal, the basic components of timing synchronisation. In the coarse synchronization of timing, the method of calculating correlation peaks is adopted, and in the fine synchronization of timing, the precise synchronization of timing is accomplished for frequency hopping patterns and dynamic keys. In order to verify the correctness of the synchronisation method, simulations are carried out in the frequency domain with 50% interference, and the results show that the synchronisation method can achieve a high correct rate with a signal-to-noise ratio of -8dB, which is of practical value.
2023,45(15): 102-106 收稿日期:2023-05-29
DOI:10.3404/j.issn.1672-7649.2023.15.019
分类号:TN914.41
基金项目:船舶工业国防科技预研基金资助项目(6141B04050101)
作者简介:李欣(1982-),男,工程师,研究方向为通信系统
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