摘要
多战舰联合通信信号易受到恶劣天气影响,导致信号质量下降,影响了信息传输的准确性。为此,提出一种恶劣天气下多战舰联合通信信号的增强方法。该方法分为两部分进行:第1部分利用EMD和小波阈值结合的方法进行通信信号中噪声消除;第2部分通过改进的差分相干累积算法捕捉微弱信号,然后利用功率放大器补偿。结果表明,与3种前人研究方法相比,应用本文方法信噪比较大,信号中信息完整度更高,证明本方法的增强效果更好。
Multi warship joint communication signal is easy to be affected by bad weather, which leads to the decline of signal quality and affects the accuracy of information transmission. In this paper, an enhanced method of multi warship joint communication signal in bad weather is proposed. The method is divided into two parts. In the first part, EMD and wavelet threshold are combined to eliminate noise in communication signals;in the second part, weak signals are captured by improved differential coherent accumulation algorithm, and then compensated by power amplifier. The results show that: compared with the three previous research methods, this method has higher signal-to-noise ratio and higher information integrity in the signal, which proves that the enhancement effect of this method is better.
作者
者奕宁
崔维群
申加亮
ZHE Yi-ning;CUI Wei-qun;SHEN Jia-liang(Shandong Water Conservancy Vocational College,Rizhao 276826,China)
出处
《舰船科学技术》
北大核心
2021年第2期151-153,共3页
Ship Science and Technology
基金
2016年山东省教育厅人文社会科学研究项目(J16WG31)
关键词
恶劣天气
多战舰联合通信
信号增强方法
severe weather
multi warship joint communication
signal enhancement method
