物理学报Issue(22)：224301-1-224301-6,6.DOI:10.7498/aps.62.224301
基于差分Pattern时延差编码和海豚whistles信号的仿生水声通信技术研究
Research on bionic underwater acoustic communication technology based on differential Pattern time delay shift coding and dolphin whistles
摘要
Abstract
Regarding the performance degradation caused by the traditional method of covert underwater acoustic communication, in this paper we propose a bionic underwater acoustic communication technology on the basis of differential Pattern time delay shift coding system and dolphin whistles. The signal band of dolphin whistles is narrow and the intervals between information signals are different, and the cross-correlation is very weak. Dolphin whistles are used for synchronization and Patterns, for the time interval between dolphin whistles conveys the information bits. The mimicked version of communication signal is not easy to detect and intercept, and the special encoding method of differential Pattern time delay shift also makes the information not easy to decipher, so this bionic underwater acoustic communication technology has strong covert and confidential nature and it also has an excellent performance in anti inter-symbol interference and anti Doppler effect. A tank experiment is conducted for this system. At SNR 0 dB and relative movement, the user message is recovered at an effective data rate of 67 bit/s with low bit error. It is proved that the system has an effectiveness, robustness and covert nature.关键词
仿生水声通信/差分Pattern时延差编码/海豚whistles信号/隐蔽性Key words
bionic underwater acoustic communication/differential Pattern time delay shift coding/dolphin whistles/covert nature引用本文复制引用
韩笑,殷敬伟,郭龙祥,张晓..基于差分Pattern时延差编码和海豚whistles信号的仿生水声通信技术研究[J].物理学报,2013,(22):224301-1-224301-6,6.基金项目
国家自然科学基金项目(批准号:51179034,60802060)、中央高校基本科研业务费专项资金(批准号:P223513012)和博士后基金项目(批准号:2013M531015)资助的课题*Project supported by the National Natural Science Foundation of China (Grant Nos.51179034,60802060), the Fundamental Research Funds of the Central University, China (Grant No. P223513012), and the China Postdoctoral Science Foundation (Grant No.2013M531015) （批准号:51179034,60802060）
