Reliable Acoustic Communication for Subsea Operations
Underwater communication
Underwater communication
Solution
● A reliable communication link is essential for subsea operations.
However, the underwater environment is hostile to data transmission: electromagnetic signals are absorbed rapidly, and cable-based solutions are often expensive and difficult to deploy. Acoustic modems are the industry standard for bridging this gap, acting as the critical interface to connect a diverse range of systems across scientific, commercial, and security sectors.
Underwater acoustic communication is inherently difficult due to strong attenuation, multipath propagation (echoes), variable sound-speed profiles, Doppler effects, and high ambient noise. These factors make maintaining a stable link a complex challenge that is heavily dependent on the environment.
EvoLogics overcomes these limitations with our field-proven S2C (Sweep-Spread Carrier) technology. This proprietary signal modulation technique generates a highly resilient signal that maintains integrity even in the presence of noise, echoes, and other adverse conditions affecting the underwater acoustic channel.
Underwater communication
Based on S2C, we design high-performance, scalable communication systems that ensure robust, high-integrity data links for applications ranging from shallow-water UUV operations to long-term deep-sea observatories. Whether you need a simple modem pair for point-to-point transfers, lightweight and compact OEM units for integration with UUVs, battery-powered units for long-term deployments, or a hybrid system that combines data networking with positioning and navigation, EvoLogics has the expertise and products to meet your unique underwater communication needs.
Underwater Communication
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Resilient S2C Technology
Our field-proven S2C modulation mimics the physics of dolphin communication to ensure stable connections in challenging conditions. It continuously monitors the acoustic channel quality and adapts to the underwater environment, resisting multipath effects (echoes) and noise to maintain the highest possible bitrate. This ensures reliable links in shallow waters with extreme multipath and high-noise areas like harbors or construction sites.
[02]
Intelligent Data Handling
Our proprietary data-link protocol optimizes acoustic channel usage to handle mixed traffic types without interruption. It employs adaptive algorithms to maximize bitrates for large file transfers, while simultaneously prioritizing instant messages for command and control. This allows critical commands to be sent and received during ongoing data transmissions without breaking the link.
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Simultaneous Communication & Positioning
Optimize your operations by calculating positioning fixes during data transmission. With EvoLogics modems, there is no need to switch modes. A single system for both telemetry and navigation reduces equipment payload, simplifies deployment, and significantly lowers operational costs.
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Versatile Configuration Options
We offer a build for every mission profile. Choose from multiple frequency ranges, directional or omnidirectional beam patterns, and different housing materials to match your depth rating and specific application needs. Add optional modules for power management, remote activation/recovery, and precise synchronization to ensure smooth integration across your platforms. Opt for versions without housing to easily integrate into AUVs, ROVs, USVs and other space-restricted setups.
[05]
Extensive Developer Ecosystem
Designed for deep integration, our modems feature a comprehensive command set for granular control over every setting. Developers can utilize custom scripting, configuration and diagnostic utilities to interface directly with existing software stacks. A physical or cloud-based modem emulator simplifies integration, allowing to test custom code before deployment on physical modem hardware.
[06]
Scalable Networking
Future-proof your operations with devices that are network-ready out of the box. Our firmware supports everything from point-to-point links to complex multi-node swarms, handling addressable data exchange and routing automatically. Built-in collision avoidance algorithms and traffic monitoring modes ensure robust performance when multiple assets operate simultaneously.
Underwater communication
Marine Research & Environmental Monitoring
On-demand data upload from deep-sea observatories and benthic stations
Real-time telemetry for tsunami warning sensor networks
Energy-efficient communication for long-term glider and float deployments
Enriching scientific datasets with precise time and location logs
Offshore Energy & Infrastructure
Wireless retrieval of status logs and imagery from pipeline sensors and wellheads
Real-time monitoring of offshore wind farm foundations without expensive cabling
Secure acoustic actuation of subsea valves and release mechanisms
Wireless positioning and status updates during construction and installation
Uncrewed Vehicle Operations
Trajectory updates and mission commands for AUVs, ROVs, and USVs
Swarm coordination and data sharing between multiple vehicles
Monitoring of vehicle health and mission status
Remote control of subsea assets in challenging acoustic environments
Security & Surveillance
Secure command, control, navigation and positioning for Mine Countermeasures (MCM)
Reliable messaging, tracking and coordination for diver operations
Wireless networking for port and harbor perimeter surveillance systems
Communication links for submarine and AUV fleets
Underwater communication
EvoLogics modems are engineered as versatile tools for diverse communication tasks. From compact units for mini-UUVs to deep-sea nodes for permanent observatories, our ecosystem offers a build for every requirement.
PRO Series
The standard for performance and configurability. The PRO series offers the widest range of frequency options, transducer beam patterns, depth ratings and add-ons. It is the go-to choice for long-range telemetry and deep-water infrastructure.
MINI Series
Full performance in a compact, lightweight design. The MINI lineup features transducers for mid- and high-frequency operations, and targets size- and weight-sensitive applications, such as AUV integration and portable units.
TINY Series
Our smallest form factor is a 20% size reduction compared to the MINI-series. Designed for ultra-compact vehicles, the TINY series provides essential high-frequency communication without compromising on the robust S2C protocol stack.
OEM & Integration
For seamless system integration, all EvoLogics modems are available as OEM builds (electronics boards + cable-mounted transducer) without housing. These are ideal for embedding directly into underwater vehicles, buoys, or custom machinery.
Underwater communication
The selection of a base model and the modem’s configuration relies on aligning the device specifications with your operational scenario. Consider these factors:
Underwater communication
Let’s take a look at a few sample use cases and the suggested system solutions
Use Case
Monitoring hydrothermal vents at ~3,000 m depth requires a reliable point-to-point link between a seafloor station and a surface buoy. Large datasets must be uploaded periodically over a multi-year deployment.
Use Case
A coastal desalination plant needs continuous monitoring of water quality parameters at ~150 m depth. The system must transmit real-time alerts to a buoy 800 m away and operate autonomously for six months with a remotely triggered recovery.
Underwater communication
While our standard modems are ready-to-use, complex missions often demand a project-specific approach. We offer specialized hardware configurations and engineering services to adapt our technology to your unique operational environment.
The S2C Beacon is a fully integrated, battery-powered station designed for autonomous operation. Combining an acoustic modem with a built-in release mechanism and flotation collar, it allows for easy, remotely triggered recovery to the surface. These beacons are ideal as seafloor-anchored reference transponders for LBL/USBL positioning or as reliable relay nodes in a long-range network. Optimized for short- to mid-term deployments, they can also be equipped with additional sensors to double as environmental data loggers.
We design customized communication architectures that ensure maximum coverage and accuracy for your specific scenario. Our engineering team provides detailed planning to fuse EvoLogics hardware with your platforms, including:
Hardware Adaptation: Selecting and modifying base models to fit physical constraints.
Firmware Development: Creating operation-specific firmware for unique data handling protocols
Sensor Fusion: Integrating external instruments for seamless multi-sensor data collection and processing.
The result is a tailored solution built to match the exact scope and scale of your operations
Underwater communication
Contact
We design a wide range of underwater communication solutions and can provide expert guidance for any operation scenario.
Whether your assets operate in shallow waters, deep seas, over short ranges or across extended perimeters, we can recommend the optimal system configuration for your challenge.
Get in touch and share your application outline - we are here to find the best solution for your project.
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