Pyxis INS + USBL, 3780 Transceiver

Integrated Inertial USBL System

Pyxis INS + USBL takes the best of aae's USBL technology and combines it with an advanced inertial navigation system (INS), creating a state of the art, inertially aided Ultra Short Baseline system capable of highly accurate subsea tracking with survey grade performance. As a tightly coupled, factory fitted package, Pyxis is a calibration free system able to immediately operate from any vessel as soon as the work site has been reached.

applied acoustics

Great Yarmouth, GB

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Description

Pyxis INS + USBL takes the best of aae’s USBL technology and combines it with an advanced inertial navigation system (INS) from one of the most respected names in the industry, creating a state-of-the-art, inertially aided Ultra Short Baseline system capable of highly accurate subsea tracking with survey grade performance. The combination of Sigma 2 acoustic protocols and SBG Systems’ high precision Navsight Apogee Marine INS brings together two leading names in the field of marine technology, resulting in our most accurate and long-range positioning system, providing much time, cost and performance benefits to global survey operators.

As a tightly coupled, factory-fitted package, Pyxis INS + USBL is a calibration-free system able to immediately operate from any vessel as soon as the work site has been reached. Unlike fibre optic gyro’s (FOG), the MEMS-based INS does not fall under ITAR regulations, and the range-restricted option means the whole system can be shipped unhindered and without export control to almost anywhere in the world.

Although an integrated part of the USBL system, individual INS data output feeds are available allowing real-time stabilisation of secondary systems such as multi-beam echo sounders (MBES), a capability which drastically enhances the value of the Pyxis INS + USBL system as part of an overall survey spread.

Optimum system performance is delivered when used in conjunction with Sigma 2 enabled transponders, in particular the aae 1100 series beacons, which through the Multi-Fire common interrogate functionality, can give positional updates in <3 seconds from an array of 10 beacons. This pairing also supports the MiQ Data Telemetry function that provides third-party data plus position to the surface for a variety of applications.

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Specifications

Transponders: Dimensions {mm}

OD74 x 395

Dry weight {kg}

3

Depth rating {m}

1500

Additional functions

Transponder details based on Applied Acoustic Engineering 1119 Mini Beacon.

Physical properties of transducer head: Diameter [mm]

200

Height [m]

0.432

Min. external power [Voltage]

48

Max. external power [Voltage]

48

System Parameters: Frequency {kHz}

18KHz - 32KHz (MF)

Spread spectrum technology

Y

Min. operation range {m}

1

Max. operation range {m}

3000

Operation beam angle {deg}

150

Angle accuracy (degr) @ 20 dB

0.07

Focussed beam forming

N

Horizontal accuracy (in % of the water depth)

0.1

Vertical accuracy (in % of the water depth)

0.1

Number of active elements

8

Number of transponder channels

16

Multi user functionality

Y

Motion compensation: Motion sensors compatible to the system:

NavSight Apogee INS

Required pitch uncertainty [deg}

0.008

Required roll uncertainty [deg]

0.008

Required heave uncertainty [m]

0.05

Interfaces: Compatible hardware

Ethernet, Serial

Compatible software

Pyxis - 3690

Real-time access procedure

Embedded Windows 10

Inertial interfacing

Y

Speed of sound: Real-time integration of SV-profile

Y

Deployment: Inside deployment pole available

Y

Diam gate valve {mm}

300

Outside deployment pole available

Y

Recommended distance below keel {m}

1