Gyro USBL

Pre-calibrated Combined Acoustic & AHRS Transceiver

If you’re using a Ranger 2 system to track the position of a subsea target from a vessel of opportunity, over an extreme range, or from a pipelay vessel’s stinger, Gyro USBL delivers the highest precision available – now pre-calibrated direct from us.

Sonardyne International

Yateley, GB

Description

Designed for Ranger 2, Gyro USBL is an all-in-one instrument that combines our 6th generation (6G) High Precision Acoustic Positioning (HPT) acoustic transceiver and Lodestar Attitude and Heading Reference System (AHRS) in the same unit. This combination eliminates alignment errors seen in conventional USBL systems that are dependent upon a vessel’s own attitude and heading sensors.

Our latest generation design is supplied in-water pre-calibrated meaning that you can get to work as soon as it’s fitted, saving you valuable vessel time. Gyro USBL has always been available in two different array designs, optimised for deep water and long layback operations. Now additionally, you can choose between standard and ‘plus’ AHRS performance grades. Depending on the array type and AHRS grade, Gyro USBL can offer precision of better than 0.1% of slant range out of the box.

Gyro USBL has always been a popular choice for installations on vessels-of-opportunity using through-hull or over-the-side deployment arrangements, or even the tip of pipelay vessel stingers, where Ranger 2 is being used to track the vessel’s own ROV as it conducts touchdown monitoring – often at extreme lay backs.
But now Gyro USBL is significantly smaller and lighter than its predecessor, smaller vessels, including unmanned surface vessel (USVs), can now gain the best performance possible from their Ranger 2 system. The new design is also still be manufactured in corrosion-resistance aluminium-bronze, so ideally suited to use in any waters.

Specifications

Transponders: Dry weight {kg}

64

Depth rating {m}

100

Additional functions

Optional tilted array adaptor

Physical properties of transducer head: Diameter [mm]

225

Height [m]

439

System Parameters: Frequency {kHz}

19-34

Spread spectrum technology

Y

Min. operation range {m}

0

Max. operation range {m}

7000

Focussed beam forming

Y

Number of active elements

8

Number of transponder channels

600

Multi user functionality

Y

LBL-functionality

Y

Interfaces: Compatible hardware

Seriel/ Ethernet

Compatible software

Ranger 2/ Marksman

Real-time access procedure

RS485, Baud Rate Switchable Ethernet 100mbps

Inertial interfacing

Y