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SPRINT-Nav 500

SPRINT-Nav provides all-in-one navigation for subsea vehicles and survey operations by combining solid state dual Attitude Heading Reference System (AHRS) and Inertial Navigation System (INS) (and optional Lodestar AHRS only), a Syrinx Doppler Veloci

Sonardyne International Ltd.
Blackbushe Business Park
GU46 6GD Yateley
United Kingdom of Great Britain & Northern Ireland
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Description

SPRINT-Nav provides all-in-one navigation for subsea vehicles and survey operations by combining solid state dual Attitude Heading Reference System (AHRS) and Inertial Navigation System (INS) (and optional Lodestar AHRS only), a Syrinx Doppler Velocity Log (DVL) and a high accuracy pressure sensor in a single housing. The result is one of the smallest combined inertial navigation instruments on the market. All onboard sensors are optimally integrated to provide seamless operation and unprecedented levels of performance compared with standalone instruments from different vendors. The unit requires no calibration for all but the most demanding applications with ultra-tight mechanical alignment. SPRINT-Nav’s inertial dual AHRS & INS algorithm capability is unique in the market and allows for automatic on-board integrity checking between algorithms and instantaneous INS start up with North alignment from the on-board AHRS. This capability allows for simultaneous use from one instrument, e.g. AHRS plus DVL for ROV piloting, INS plus DVL for survey operations. Tight beam-level DVL aiding for the on-board INS with optimal timing and use of proprietary QC metrics provides higher performance and more reliable navigation in demanding bottom-lock environments. Export of SPRINT-Nav is simplified as compared to other separate DVL and INS units. For example, shipping from outside the USA does not require a re-export licence. Each DVL transducer is fitted with a full depth rated water block to ensure protection of the internal components. SPRINT-Nav can be interfaced via a single connection and/or the internal sensors can be interfaced separately depending on requirements. Continuous on-board data storage supports post-mission diagnostics and post-processing.

Specifications

  • Height [m]
    0.395
  • Width [m]
    0.205
  • Weight [kg]
    23.9
  • Min. Voltage (DC)
    24
  • Power consumption [W]
    15
  • Splashproof casting
    Y
  • Water resistant casting
    Y
  • Water resistance [m]
    6000
  • Mean time between failures [hr]
    400000
  • Type of accelerometer
    Closed-loop (force feedback) Q-Flex
  • Type of gyro
    Ring Laser Gyro (RLG)
  • Removable from base plate
    Y
  • Type of application
    Marine
  • Moving parts
    N
  • Non-operating shock tolerance [g]
    22
  • Operating shock tolerance [g]
    10
  • Min. operating temperature [C]
    -10
  • Max. operating temperature [C]
    55
  • Max. rotation speed [deg/s]
    500
  • NMEA formats
    GGA; GLL; ZDA; VTG; ACK; HDT; THS; TXT; ALR
  • Other
    binary and ASCII messages
  • Heading [deg]
    0.04
  • Pitch [deg]
    0.01
  • Roll [deg]
    0.01
  • Heave: constant part [m]
    0.05
  • Heave: variable part [%]
    5
  • Surge/sway [m]
    0.05
  • Heading [deg]
    0.1
  • Pitch [deg]
    0.01
  • Roll [deg]
    0.01
  • Heave [m]
    0.05
  • Surge/sway [m]
    0.05
  • Heading [deg]
    0.1
  • Pitch [deg]
    0.01
  • Roll [deg]
    0.01
  • Heave [m]
    0.02
  • Decrease in position accuracy [m/hr]
    3
  • Heading [deg]
    0.1
  • Pitch [deg]
    0.01
  • Roll [deg]
    0.01
  • Heave [m]
    0.05
  • Decrease in position accuracy [m/hr]
    0.3
  • Accelerometer bias [µ-g]
    200
  • gyro bias [deg/hr]
    0.01
  • Calibration procedure
    IMU is factory calibrated - no user calibration required.
  • Graphical user interface
    Y
  • Distinguishable features
    Customised for reliable use in commercial marine applications and for optimal integration with acoustic positioning systems.
  • Export restrictions
    US Commerce controled

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