Passive Underwater Acoustic Camera for Security-Oriented Infrastructure Monitoring

Underwater situational awareness — emission-free

HydroVision SeaStar24 is a passive underwater acoustic imaging platform designed to support security-oriented monitoring in sensitive maritime environments.

Using a dense hydrophone array and advanced acoustic beamforming, the system transforms underwater sound into spatial 2D and 3D visualizations — without transmitting any acoustic signals.

SeaStar24 enables discreet underwater situational awareness for critical infrastructure, ports, offshore facilities, and research environments.

A Passive Approach to Underwater Monitoring

Unlike active sonar systems, SeaStar24 does not emit acoustic pulses.
The system operates entirely passively, capturing existing sound in the underwater environment and reconstructing acoustic activity spatially in real time.

This approach enables:

  • Emission-free underwater surveillance
  • Discreet monitoring of sensitive areas
  • Reduced environmental impact
  • Situational awareness without acoustic signature

Passive acoustic imaging supports informed decision-making in complex subsea environments where conventional sonar may not be desirable.

Underwater Security Monitoring

Sensitive maritime infrastructures require awareness beneath the surface.

SeaStar24 supports underwater activity localization through passive acoustic imaging. Depending on system configuration, the platform may assist in identifying and visualizing acoustic events associated with:

  • Human underwater movement
  • Equipment-related acoustic signatures
  • Vessel-related subsea activity
  • Interactions near underwater structures

As a passive system, SeaStar24 operates without acoustic emission, making it suitable for discreet monitoring scenarios.

Operational capabilities depend on project scope, environmental conditions, and system configuration.

Real-Time 2D and 3D Acoustic Visualization

SeaStar24 converts acoustic signals into intuitive spatial representations.

Key technological elements include:

  • 24-channel hydrophone array
  • Digital beamforming
  • Phase-coherent signal processing
  • Real-time acoustic source localization
  • 2D and 3D acoustic imaging

This visualization approach enhances interpretability compared to conventional passive monitoring systems that rely solely on spectral analysis.

Passive Acoustic Imaging vs Active Sonar

FeatureSeaStar24 (Passive)  Active Sonar
Acoustic EmissionNoYes
DetectabilityLow acoustic footprintDetectable
Environmental DisturbanceMinimalPotential impact
Real-Time VisualizationYesYes
Discreet DeploymentSuitableLimited

 

While active sonar systems generate echoes through transmitted pulses, SeaStar24 reconstructs acoustic fields from naturally occurring sound.

This emission-free approach is particularly relevant in environmentally sensitive or discretion-critical scenarios.

Development Status & Custom Configuration

HydroVision SeaStar24 is currently available as a pre-series (zero-series) system intended for project-based deployment and application-specific development. Rather than a standardized mass-produced unit, SeaStar24 is developed in close cooperation with partners and end users.

System parameters such as:

  • Array configuration
  • Processing architecture
  • Visualization modes
  • Deployment geometry

can be adapted to specific operational requirements. Capabilities depend on project configuration and environmental conditions. This flexible development approach allows tailored solutions for complex underwater monitoring challenges.

Offshore & Infrastructure Monitoring

Beyond security-oriented contexts, SeaStar24 supports acoustic situational awareness for subsea infrastructure environments.

Potential application areas include:

  • Offshore wind foundation monitoring
  • Subsea cable observation
  • Pipeline proximity monitoring
  • Underwater structural interaction analysis

The passive nature of the system enables monitoring without introducing additional acoustic energy into marine ecosystems.

Marine Research & Environmental Compatibility

SeaStar24 may also support research and environmental applications requiring:

  • Non-invasive acoustic field visualization
  • Marine activity localization
  • Acoustic source mapping
  • Eco-sensitive monitoring scenarios

As the system does not emit sound, it aligns with low-impact monitoring strategies.

Technical Overview

  • 24-channel hydrophone array
  • Real-time beamforming
  • 2D and 3D acoustic visualization
  • Ethernet-based data interface
  • Modular integration capability
  • Configurable deployment options

Detailed technical specifications are available upon request.

Frequently Asked Questions

A passive underwater acoustic camera detects and localizes existing sound sources underwater without emitting acoustic pulses. It visualizes acoustic activity spatially in 2D or 3D.

SeaStar24 supports the localization of underwater acoustic activity. Depending on configuration and environmental conditions, the system may assist in identifying acoustic signatures associated with human underwater movement.

Yes. SeaStar24 operates emission-free and does not introduce additional acoustic energy into marine ecosystems.

The system is currently available as a pre-series solution and is developed in project-based configurations tailored to specific operational requirements.

Request Information

To discuss project-based deployment, technical details, or potential application scenarios, please contact our team.

gfai tech GmbH
Volmerstraße 3
12489 Berlin, Germany
Phone: +49 (0)30 814 563-750
Email: info@gfaitech.de