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Applied Acoustics Pyxis INS + USBL, 3781 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 Pyxis INS + USBL, 3781 Transceiver
Applied Acoustics
Gapton Hall Road
NR31 ONB Great Yarmouth
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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 many 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.

Specifications

  • Date of first release
    9092020
  • Mounting
    Hull mounted & Portable
  • Retractable
    Y
  • Diameter [mm]
    152
  • Height [m]
    0.432
  • Min. external power [Voltage]
    48
  • Max. external power [Voltage]
    48
  • Type of system
    INS + USBL
  • Frequency {kHz}
    18KHz - 32KHz (MF)
  • Spread spectrum technology
    Y
  • Max. operation range {m}
    2000
  • Operation beam angle {deg}
    180
  • Horizontal accuracy (in % of the water depth)
    0.45
  • Vertical accuracy (in % of the water depth)
    0.45
  • Number of active elements
    6
  • Min. operation range {m}
    1
  • Angle accuracy (degr) @ 20 dB
    0.25
  • Number of transponder channels
    16
  • Multi user functionality
    Y
  • Ray tracing
    N
  • Real-time integration of SV-profile
    Y
  • Motion sensors compatible to the system:
    NavSight Apogee INS
  • Required heave uncertainty [m]
    0.05
  • Required pitch uncertainty [deg}
    0.008
  • Required roll uncertainty [deg]
    0.008
  • Compatible hardware
    Ethernet, Serial
  • Inertial interfacing
    Y
  • Compatible software
    Pyxis - 3690
  • Real-time access procedure
    Embedded Windows 10
  • 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.
  • Inside deployment pole available
    Y
  • Outside deployment pole available
    Y
  • Recommended distance below keel {m}
    1
  • Diam gate valve {mm}
    300
  • Distinguishable features
    Integral IMU. High accuracy. High repeatability. Integral calibration tools. Depth sensor.

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