USBLs and SSBLs

Nexus 2 Lite USBL

USBL Tracking System Designed for Ease of Installation in a Vessels Ops Room

Nexus 2 Lite is an advanced USBL positioning and tracking system that determines the position of dynamic subsea targets through the transmission and reception of acoustic signals between the submerged transceiver and a target beacon.

applied acoustics

Great Yarmouth, GB

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Description

Nexus 2 Lite is an Ultra Short Baseline (USBL) underwater positioning and tracking system centered on a multi-element, single transducer that transmits and receives acoustic signals to dynamic subsea targets from which range, bearing and depth information can be determined. It incorporates Sigma 2 Spread Spectrum technology to provide a secure acoustic link. By incorporating Sigma 2 technology, the wide bandwidth transmissions reduce the system’s susceptibility to interference. Designed for ease of installation in a vessel's operations room, the surface console has been mounted within a rugged instrument enclosure for connection to a laptop or tablet PC.

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Specifications

Transponders: Dimensions {mm}

74 x 410

Dry weight {kg}

3

Depth rating {m}

1500

Additional functions

Depth

Physical properties of transducer head: Diameter [mm]

152

Height [m]

0.46

Min. external power [Voltage]

100

Max. external power [Voltage]

240

Max power consumption [W]

110

System Parameters: Frequency {kHz}

18-32

Spread spectrum technology

Y

Min. operation range {m}

1

Max. operation range {m}

995

Operation beam angle {deg}

180

Angle accuracy (degr) @ 20 dB

0.8

Focussed beam forming

N

Number of active elements

5

Number of transponder channels

10

Multi user functionality

N

LBL-functionality

N

Horizontal accuracy (in % of the water depth)

0.45

Vertical accuracy (in % of the water depth)

0.45

Motion compensation: Motion sensors compatible to the system:

Internal AHRS + external options

Interfaces: Compatible hardware

Multiple

Compatible software

Nexus 2 Lite v2.1.2.0

Real-time access procedure

Windows OS

Inertial interfacing

N

Speed of sound: Ray tracing

N

Real-time integration of SV-profile

Y

Deployment: Inside deployment pole available

Y

Diam gate valve {mm}

100

Outside deployment pole available

Y

Recommended distance below keel {m}

1