Underwater Acoustic Modems
EvoLogics underwater acoustic modems provide full-duplex digital communication using the patented S2C (Sweep-Spread Carrier) technology, delivering an excellent performance, resistant to the challenges of a dynamic subsea environment. Self-adaptive algorithms adjust the S2C parameters to maintain the highest bit rate possible in current conditions.
The spread-spectrum S2C communication technology stems from bionic concepts and over the years evolved into a whole ecosystem of products. This includes several series of underwater acoustic modems, modular underwater positioning systems (USBL, LBL, SBL), as well as a framework for developers in both networking and hardware design.
Every EvoLogics underwater acoustic modem was designed as a reliable tool to solve multiple communication tasks: it implements advanced data delivery algorithms, supports several data management options, is capable of addressing and networking and is easy to control with a comprehensive set of commands and software-configurable settings.
Modern applications range from retrieving data from subsea sensors and navigating unmanned underwater vehicles to deploying complex underwater sensor networks for monitoring and exploration.
R-Series
The S2C R “standard” build modems are highly configurable. The series features a large selection of short- mid- and long-range devices for shallow or deep water applications.
S2C R modems offer the widest selection of options and depth ratings to find an exact match to most unique and application-specific tasks.
Mini-Series
S2C M-series offers the full benefits of the S2C technology in a light and compact design, targeting size- and weight-sensitive applications.
The series features several popular transducers in high- and mid-frequency range, as well as a unique high-frequency transducer for fast short-distance transmissions.
Tiny-Series
The newest light and ultra-compact design represents a size reduction of almost 20% compared to mini-modems.
The S2C T series form factor is available for high frequency models, catering to various applications with 4 frequency range/directivity options.
Underwater acoustic modems sorted by frequency and operating ranges
HIGH SPEED MID-RANGE DEVICES
18/34
Fast devices for mid-range horizontal transmissions. All-round performer
Frequency: 18 - 34 kHz
Acoustic Connection: up to 13.9 kbit/s
Operating Range: 3500 m
Directivity: several versions available
30/60
High-speed devices for mid-range vertical and slant transmissions
Frequency: 30 - 60 kHz
Acoustic Connection: up to 31.2 kbit/s
Operating Range: 1000 m
Directivity: nearly hemispherical
42/65
High-speed devices for mid-range vertical and slant transmissions
Frequency: 42 - 65 kHz
Acoustic Connection: up to 31.2 kbit/s
Operating Range: 1000 m
Directivity: wide-angle (100 degrees)
48/78
High-speed devices for mid-range horizontal transmissions
Frequency: 48 - 78 kHz
Acoustic Connection: up to 31.2 kbit/s
Operating Range: 1000 m
Directivity: horizontally omnidirectional
HS
High-speed devices for short-range transmissions in shallow waters
Frequency: 120 - 180 kHz
Acoustic Connection: up to 62.5 kbit/s
Operating Range: 300 m
Directivity: omnidirectional
DEPTH-RATED LONG-RANGE DEVICES
15/27
Depth-rated devices for long-range vertical or slant transfers
Frequency: 15 - 27 kHz
Acoustic Connection: up to 9.2 kbit/s
Operating Range: 6000 m
Directivity: wide-angle (120 degrees)
12/24
Depth-rated devices for long-range vertical or slant transfers
Frequency: 13 - 24 kHz
Acoustic Connection: up to 9.2 kbit/s
Operating Range: 6000 m
Directivity: conical (70 degrees)
7/17
Depth-rated devices for long-range horizontal, vertical or slant transfers
Frequency: 7 - 17 kHz
Acoustic Connection: up to 6.9 kbit/s
Operating Range: 8000 m
Directivity: several versions available
OPTIONS
Seamless system integration and interaction between different components of underwater infrastructure are key to effective operations.
EvoLogics underwater acoustic modems are the basis for integrated devices that combine powerful communication performance with extended functionality for positioning, sensing, system integration and development tasks.
USBL-Series
S2C R USBL devices combine powerful USBL transceiver functionality with the full benefits of an S2C technology communication link. The built-in USBL antenna allows for simultaneous data transfers and target positioning.
Multiple configuration options and depth ratings allow to find the best-fit solution for various application-specific scenarios.
OEM for system integration
All EvoLogics underwater acoustic modems are available in OEM configuration (cable-mounted transducer and electronics without housing) for system integration with underwater vehicles, moored stations and other equipment.
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Beacons
Any S2C R underwater acoustic modem can be configured as an S2C beacon - a compact battery-powered device with built-in acoustic release mechanism and floatation collar.
As a transponder for LBL or USBL positioning, an underwater communication network or relay chain node, the S2C beacon is a great performer for multiple subsea applications
EvoLogics underwater acoustic modems compared:
