Wave Glider Transceiver (WGT) is an acoustic transceiver designed to integrate within a Liquid Robotics Wave Glider ASV. It enables wireless data harvesting operations to be conducted with a wide range of our instruments including AMT, Fetch and PIES.
At a glance
Custom engineered for a Wave Glider standard aft payload space
Provides subsea-surface-shore gateway link for Sonardyne long endurance sensors
Enables direct remote data collection on demand, monitoring and control from shore based Wave Glider operations centre
Integrated acoustic modem with data rates from 100 to 9,000 bps
Add capability to your Wave Glider
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Overview
The WGT functionality enables Wave Glider to acoustically collect data from large arrays of seabed instruments in a highly cost effective manner without the need to deploy a traditional surface ship to perform this operation. Instead, Wave Glider is controlled remotely from a shore station via Iridium satellite communications.
The WGT is capable to be used with directional transducer options for operating in both Medium Frequency (MF) (20-34 kHz) and Lower Medium Frequency (LMF) (12-20 kHz) bands to suit different seabed instruments and is fully Sonardyne Wideband® 2 compatible.
The WGT is tightly integrated into the Wave Glider vehicle communications and power systems thereby providing many of the standard acoustic commands and features associated with Sonardyne 6G® products.
Data are passed by Wave Glider to the Iridium satellite system for on-wards transmission to the user in near real time.
Wave Glider Transceiver case studies
Ocean Science
GPS-Acoustics unlock a new approach to seabed geodetics
Guest authors, Liquid Robotics, take a closer look at seafloor geodesy, an emerging scientific field that is making the real-time study of continental plate tectonics a cost-effective and viable option.
Guest Author: Liquid Robotics
Ocean Science
Unlocking the Gulf Loop Current
Randy Watts, Professor of Oceanography at the of the University of Rhode Island, sets out how our PIES are part of a project to improve the forecasting of underwater ‘storms’ in the Gulf of Mexico.
Client: University of Rhode Island
Resources
| Feature | Type 8297-010-05 (WGT Module) | Type 8297-010-04 (GPS-A Module) |
|---|---|---|
| Operating frequency | MF (20–34 kHz) | MF (20-34 kHz) |
| Transducer beam shape | Directional | Directional |
| Transmit source level (dB re 1 µPa @ 1 m) | 190–202 dB (4 levels) | 190–202 dB (4 levels) |
| Tone equivalent energy (TEE) | 196–208 dB | 196–208 dB |
| Receive sensitivity (dB re 1 µPa) | 90–120 dB (7 levels) | 90–120 dB (7 levels) |
| Acoustic modem data rates | 100-9,000 bps (6 levels) | 100-9,000 bps (6 levels) |
| Dimensions (length x width x height) | 412 x 389 x 205 mm | 412 x 389 x 205 mm |
| Weight in air/water | 10.4/-15 kg | 10.4/-15 kg |
| Operating temperature | -10 to 45°C | -10 to 45°C |
| Storage temperature | -20 to 55°C | -20 to 55°C |
| Internal backup battery | Rechargeable Li-ion (2.2 Ah) | Rechargeable Li-ion (2.2 Ah) |
| Satellite communications | Iridium RUDICS (2,400 bps) | Iridium RUDICS (2,400 bps) |
| GNSS receiver | - | Survey grade L1 & L2 receiver: Novatel OEM7720 series (GNSS derived heading) |
| AHRS device | - | XSENS MTi-300 and/or EPSON G320 SPAN INS |
| Ranging clock | - | GPS derived 4 MHz pulse conditioned to 8 MHz |
| Communication and logging: Communications | - | Wi-Fi, RS232 transceiver, RJ45 Ethernet, dedicated power and comms for GNSS and HRP, single RS232 expansion port with 5 V power pass through |
| Communication and logging: Internal logging | 128 GB dual redundant internal memory; RINEX GNSS logging; SPAN INS logging | |
| System components | WGT Module Wave Glider Payload; 4 m Remote Transducer; Wave Glider Transducer Compatible Skeg | GPS-A Module Wave Glider Payload; 4 m Remote Transducer; Wave Glider Transducer Compatible Skeg |
