Delivering Trusted Solutions For Subsea Acoustics
- Overview
- Key Features
- Full ocean depth rated USBL transceiver
- Can be mounted on an AUV, ROV or deep towed body
- Incorporates Sonardyne's latest Wideband Technology
- Choice of MF or HF versions to suit application
- Non-Sonardyne frequencies supported
- No need for second vessel to position the towfish
- Datasheet
- iUSBL Transceiver
- Related Articles
- iUSBL - Looking up at the world
- Turning source tracking on its head
High performance subsea positioning for ROVs, AUVs and deep-tow vehicles using Sonardyne's new Inverted USBL technology.
Inverted USBL, or iUSBL, builds on the success of Sonardyne's Fusion platform and utilises a 7,000 metre rated inverted transceiver located on the vehicle, to offer high performance subsea positioning for ROVs, AUVs and deep-tow bodies.
Mounting the transceiver in this way offers many operational benefits. Installation is simple when compared with installing a through-hull or over-the-side USBL transceiver. Closely coupled attitude sensors eliminate the need for repeated system calibration, whilst the accuracy and repeatability of the acoustic signals are improved, as the transceiver is located in a low noise, dynamically stable environment.
Amongst the many and varied applications for iUSBL is as an aid to AUVs needing to rendevous with subsea docks. Mounted horizontally in the AUV's nose cone, iUSBL can guide the vehicle precisely into position to allow successful docking to occur. The AUV can then recharge and download data before commencing the next mission.
- Specifications
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Feature Type 8091 Type 8094 Operational Frequency MF (18-36kHz) HF (33-55kHz) Electrical +48VDC (38V to 50V), can operate on +24VDC (18V to 30V), Typical 15W, Max 50W Communication RS485 or RS232, baud rate switchable Transceiver Performance Operating Range Up to 7,000 metres Up to 8,000 metres Acoustic Cover ±80º ±80º Range Accuracy Better that 0.2 metres Better that 0.2 metres Positioning Repeatability All transceivers tested to better than 0.1% of slant range 1 Drms All transceivers tested to better than 0.5% of slant range 1 Drms Dimensions (LxDia) 613mm x 240mm 583mm x 162mm Weight in Air 27.2kg 17kg Weight in Water 13.0kg 6.4kg Depth Rating 7,000m 7,000m Note The absolute accuracy of the system is dependent upon the quality of attitude and heading sensors, beacon source level, vessel (towfish / ROV) noise, water depth, mechanical rigidity of the transceiver mounting, accurate survey of the offset between the transceiver acoustic face and the AHRS. - Manuals
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