Sonardyne UK (Head Office) T. +44 (0) 1252 872288 F. +44 (0) 1252 876100 E. [email protected] www.sonardyne.com Datasheet iUSBL Transceiver (Inverted) Description 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. Sonardyne’s family of Fusion UltraShort Base Line (USBL) transceivers support the use of modern Wideband™ signal technology, offering improved noise immunity, increased dynamic range and greater accuracy. As well as providing all the standard features of Sonardyne’s well proven USBL technology (see separate datasheets for Type 8021 & Type 8023 transceivers), the Type 8091 Inverted USBL transceiver provides the added flexibility of being able to mount the transceiver on an AUV, ROV, or deep towed body for use up to full ocean depth. Mounting the transceiver in this way offers many operational benefits. Installation is simple when compared with installing a through-hull or over-theside USBL transceiver. The transceiver can be mounted at any angle from horizontal to vertically upwards allowing innovative, previously difficult tracking operations to be carried out, e.g. towed body to streamer tracking, ROV to ship tracking etc. 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. iUSBL Positioning Technique Vehicle mounted transceiver positioning a vessel mounted transponder 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 • Non-Sonardyne frequencies supported • No need for second vessel to position the towfish Sonardyne UK (Head Office) T. +44 (0) 1252 872288 F. +44 (0) 1252 876100 E. [email protected] www.sonardyne.com Specifications iUSBL Transceiver (Inverted) Feature Operational Frequency Electrical Communication Transceiver Performance Dimensions (LxDia) Weight in Air Weight in Water Depth Rating Note Ø240 [9.45"] Ø162 [6.38"] 613 [24.13"] Type 8091 MF (18-36kHz) +48VDC (38V to 50V), can operate on +24VDC (18V to 30V) Typical 15W, Max 50W RS485 or RS232, baud rate switchable Operating Range Up to 7,000 Metres Acoustic Cover ± 90º Range Accuracy Better that 0.2 metres Positioning Repeatability All transceivers tested to better than 0.1% of slant range 1 Drms 613mm x 240mm 27.2kg 13.0kg 7,000m 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. Specifications subject to change without notice - 09/2007