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Dolphin Sounds-Inspired Covert Underwater Acoustic Communication and Micro-Modem
Gang Qiao1,2, Yunjiang Zhao3,4, Songzuo Liu5,6
1Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China. qiaogang@hrbeu.edu.cn.
Sensors (Basel, Switzerland)
|October 26, 2017
Summary
This study introduces a novel underwater acoustic modem using real dolphin calls for covert communication. This biologically inspired system achieves a low bit error rate for secure underwater data transmission.
Area of Science:
- Marine Biology
- Acoustic Communication
- Biomimetics
Background:
- Underwater communication presents challenges for covert data transmission between divers and UUVs.
- Existing acoustic communication methods may lack the stealth required for covert operations.
Purpose of the Study:
- To propose a novel portable underwater acoustic modem for covert communication.
- To utilize biologically inspired methods, specifically dolphin calls, for enhanced stealth in underwater acoustic communication (CUAC).
Main Methods:
- Development of a portable underwater acoustic modem incorporating real dolphin whistles and clicks stored on an SD card.
- Implementation of biomimetic CUAC algorithms for information conveyance during the intervals between dolphin clicks.
- Utilizing TMS320C6748 and TLV320AIC3106 processors for digital signal processing.
Main Results:
- Simulations demonstrated a bit error rate (BER) below 10^-5 at signal-to-noise ratios above -5 dB.
- Field tests in an underwater pool achieved a data rate of 27.1 bits per second over a 10-meter distance.
Conclusions:
- The proposed modem effectively enables covert underwater acoustic communication using biologically inspired signals.
- The system shows promise for secure, short-distance communication in underwater environments.
Keywords:
bioniccovertdolphin soundsmicro-modemunderwater acoustic communicationunderwater acoustic modemMore Related Videos
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