Covert underwater acoustic communication using dolphin sounds

Songzuo Liu; Gang Qiao; Asim Ismail

doi:10.1121/1.4795219

Covert underwater acoustic communication using dolphin sounds

J Acoust Soc Am. 2013 Apr;133(4):EL300-6. doi: 10.1121/1.4795219.

Authors

Songzuo Liu¹, Gang Qiao, Asim Ismail

Affiliation

¹ Science and Technology on Underwater Acoustic Laboratory, Harbin Engineering University, No.145-1, Nantong Street, Nangang District, Harbin, Heilongjiang Province, 150001, People's Republic of China. liusongzuo@hrbeu.edu.cn

PMID: 23556695
DOI: 10.1121/1.4795219

Abstract

In November 2012, an experiment demonstrating biological mimicry method for covert underwater acoustic communication (UAC) was conducted at Lianhua Lake in Heilongjiang China. Dolphin whistles were used for synchronization while dolphin clicks were used as information carrier. The time interval between dolphin clicks conveys the information bits. Channel estimates were obtained with matching pursuit (MP) algorithm, which is useful for sparse channel estimation. Adaptive RAKE Equalization was employed at the receiver. Bit error rates were less than 10(-4) with 37 bits per second data rate in the lake trial.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Acoustics*
Algorithms
Animals
Dolphins / physiology*
Models, Theoretical
Oceans and Seas
Signal Processing, Computer-Assisted
Singing*
Sound Spectrography
Time Factors
Vocalization, Animal*
Water*

Substances

Water