A frequency hopping pattern inspired bionic underwater acoustic communication
A frequency hopping pattern inspired bionic underwater acoustic communication
复制标题
跳频模式启发仿生水声通信
DOI：
10.1016/j.phycom.2021.101288
复制
发表时间：
2021-02-25
影响因子：
2.2
通讯作者：
Bilal, Muhammad
中科院分区：
文献类型：
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作者：
Qiao, Gang;Ma, Tianlong;Bilal, Muhammad
从仿生学角度实现水下隐蔽通信是近年来研究的热点。受跳频谱图的启发，提出了一种以鲸哨为通信载体的仿生水声通信方法。其基本思想是利用合成的哨声产生不同的声谱图来传递信息。在从噪声污染的录音中提取哨声轮廓后，首先对哨声进行建模。然后，合成哨声与一个特殊的频谱图模式，模仿哨声的光谱特性产生调制的信息。仿生通信帧是原始哨声和合成哨声的组合，它们分别用于同步和信息调制。在同步之后，提取每个接收的符号并将其与本地生成的信号相关。利用相关峰判决进行信息解调。最后通过时频相关系数和Mel倒频谱系数分析了通信信号的仿生效果。仿真和海上试验验证了该方法的可行性。在8.5km的海试中，未编码误码率小于10（-3），相关系数大于0.9。(C)2021爱思唯尔有限公司版权所有。
The covert underwater acoustic communication realized from the perspective of bionics draws an increasing interest in recent researches. Inspired by the frequency hopping spectrogram pattern, a bionic underwater acoustic communication method is proposed by using cetacean whistle as communication carrier. The basic idea is to generate synthetic whistle with different spectrogram to transmit the information. The whistle is first modeled after extracting the whistle contour from the noise-polluted recordings. Then a synthetic whistle with a special spectrogram pattern which mimics the whistle spectral characteristic is generated to modulate the information. The bionic communication frame is the combination of the original whistle and the synthetic whistles which are used for synchronization and information modulation respectively. After synchronization, the each received symbol is extracted and correlated with the locally generated signals. The information demodulation is conducted by the correlation peak decision. Finally the bionic effect of communication signals is analyzed through time-frequency correlation coefficient and Mel frequency cepstrum coefficient. Simulation and sea trial verified the feasibility of the proposed method. Less than 10(-3) uncoded bit error rate is achieved with the correlation coefficient over 0.9 at a distance of 8.5km in the sea trial. (C) 2021 Elsevier B.V. All rights reserved.