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Sublocus

Sublocus is an underwater inertial navigation system that provides accurate position, velocity and orientation at depths of up to 3000 metres.

Advanced Navigation
Level 8 / 37 Pitt St
2000 Sydney
Australia
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Description

Sublocus is an underwater inertial navigation system that provides accurate position, velocity and orientation at depths of up to 3000 metres.

Specifications

  • Year of initial development
    2011
  • Height [m]
    0.133
  • Width [m]
    0.17
  • Length [m]
    0.17
  • Weight [kg]
    6.4
  • Min. Voltage (AC)
    0
  • Max. Voltage (AC)
    0
  • Min. Voltage (DC)
    9
  • Max. Voltage (DC)
    50
  • Power consumption [W]
    6
  • Splashproof casting
    Y
  • Water resistant casting
    Y
  • Water resistance [m]
    3000
  • Mean time between failures [hr]
    50000
  • Type of accelerometer
    MEMS
  • Type of gyro
    FOG
  • Removable from base plate
    N
  • Type of application
    Marine
  • Moving parts
    N
  • Non-operating shock tolerance [g]
    25
  • Operating shock tolerance [g]
    25
  • Min. operating temperature [C]
    -40
  • Max. operating temperature [C]
    85
  • Max. rotation speed [deg/s]
    490
  • NMEA formats
    GPZDA,GPGGA,GPVTG,GPRMC,GPHDT,PASHR
  • RTCM
    Y
  • Other
    AN Packet Protocol
  • Heading [deg]
    0.05
  • Pitch [deg]
    0.01
  • Roll [deg]
    0.01
  • Heave: constant part [m]
    0.05
  • Heave: variable part [%]
    5
  • Surge/sway [m]
    0.2
  • Increase in position uncertainty w.r.t. stand-alone GPS [m]
    0.8
  • Heading [deg]
    0.05
  • Pitch [deg]
    0.01
  • Roll [deg]
    0.01
  • Heave [m]
    0.05
  • Surge/sway [m]
    0.2
  • Decrease in position accuracy [m/hr]
    5
  • Heading [deg]
    0.05
  • Pitch [deg]
    0.01
  • Roll [deg]
    0.01
  • Heave [m]
    0.05
  • Surge/sway [m]
    0.2
  • Decrease in position accuracy [m/hr]
    5
  • Heading [deg]
    0.05
  • Pitch [deg]
    0.01
  • Roll [deg]
    0.01
  • Heave [m]
    0.05
  • Surge/sway [m]
    0.2
  • Decrease in position accuracy [m/hr]
    5
  • Accelerometer bias [ยต-g]
    50
  • gyro bias [deg/hr]
    0.05
  • Calibration procedure
    None
  • Name
    Sublocus Manager
  • Filtering
    Y
  • Adaptable filter strength
    N/A
  • Adaptable input signals
    Y
  • Integrity monitoring of position input
    Y
  • Integrity monitoring of log input
    Y
  • Max. number of position input signals
    5
  • Max. number of log input signals
    5
  • Maximum latency of position input [ms]
    30
  • Maximum latency of log input [ms]
    30
  • Uncertainty indicators given in output
    Y
  • Uncertainty of time stamp for output [ms]
    0.001
  • Graphical user interface
    Y
  • Typical application
    ROV heading, pitch and roll<br> Subsea heading, pitch and roll<br> ROV navigation<br> Subsea navigation
  • Distinguishable features
    High accuracy<br> Integrated GPS and pressure depth sensor<br> Rapid north seeking gyrocompass<br> Low maintenance<br> Extensive peripheral support
  • Export restrictions
    No
  • Number of integrated GNSS receivers and antenna ports
    1
  • Tracked satellite signals
    GPS L1
  • SBAS differential signals
    Y
  • Cold start [ seconds ]
    60
  • Hot start [ seconds ]
    2
  • Horizontal Position Accuracy (SBAS) [ RMS in cm ]
    80

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