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Related Experiment Video

Updated: Feb 7, 2026

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Bio-Inspired Covert Active Sonar Strategy.

Jiajia Jiang1, Xianquan Wang2, Fajie Duan3

  • 1The State Key Lab of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China. jiajiajiang@tju.edu.cn.

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Summary
This summary is machine-generated.

This study introduces a novel bio-inspired active sonar system using sperm whale vocalizations for improved covertness. This innovative approach enhances underwater detection by mimicking natural marine mammal sounds, effectively camouflaging sonar signals.

Keywords:
active sonarbio-inspired sonarcovert sonarsonar waveform design

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Area of Science:

  • Acoustics
  • Marine Biology
  • Signal Processing
  • Bio-inspired Engineering

Background:

  • Active sonar systems face challenges with covertness, crucial for stealth operations.
  • Existing systems often misclassify biological marine mammal signals as noise.
  • Marine mammals utilize complex call pulses for communication and echolocation.

Purpose of the Study:

  • To enhance the covertness of active sonar systems through waveform design.
  • To develop a bio-inspired sonar strategy leveraging marine mammal vocalizations.
  • To enable effective underwater target detection while maintaining system stealth.

Main Methods:

  • Utilized authentic sperm whale call pulses as sonar waveforms for camouflage.
  • Designed a Range and Velocity Measurement Combination (RVMC) using two sperm whale pulses, offering excellent range resolution (RR) and Doppler tolerance (DT).
  • Developed range and velocity estimation algorithms based on the RVMC and employed correlation technology for signal detection in the sonar receiver.
  • Integrated the RVMC into sperm whale call-trains to further improve signal camouflage.

Main Results:

  • Demonstrated successful range and velocity estimation of underwater targets.
  • Verified the enhanced camouflage ability of the bio-inspired sonar waveforms.
  • Experimental results confirmed the effectiveness of the proposed range and velocity estimation methods.

Conclusions:

  • The proposed bio-inspired active sonar strategy effectively improves system covertness by using natural sperm whale vocalizations.
  • The developed RVMC and estimation methods provide accurate target range and velocity measurements with high stealth.
  • This approach offers a promising direction for developing next-generation covert underwater acoustic systems.