Seapath 130

Compact GNSS aided inertial navigation system

The Seapath 130 series is developed specifically for hydrographic surveying where high-precision heading, position, velocity, roll, pitch, heave and timing are critical measurements. The product combines state-of-theart multi-frequency GNSS receivers, inertial technology and processing algorithms in a compact and portable package.

High accuracy position output

The advanced Seapath sensor fusion algorithms integrate raw inertial sensor data from our unique and very high-performance MGC® (Motion Gyro Compass), MRU (Motion Reference Unit) or miniMRU, together with raw GNSS data and RTK, PPP or DGNSS corrections. Our unique navigation algorithms enable high accuracy position output even when no correction signals are available.

Inertial sensor

The Seapath is robust against GNSS dropouts by using the inertial sensor for dead reckoning navigation, providing all measurements even when GNSS is not available. 

No need for recalibration

The Seapath operator software is installed on the customer’s  computer for configuration and monitoring. The latest Seapath software includes Automatic Online Calibration (AOC) which significantly improves the roll and pitch accuracy. With the AOC functionality, a recalibration of the MGC/MRU/miniMRU is no longer required.

Key features

  • Compact and robust integrated INS/GNSS system
  • 0.007° to 0.015° roll & pitch accuracy dependent on IMU (Inertial Measurement Unit) model
  • No accuracy degradation in roll, pitch and heave measurements during turns
  • Precise heave at long wave periods by use of the PFreeHeave® algorithms
  • 550-channel multi-frequency GPS/GLONASS/Galileo/BeiDou/QZSS receiver
  • Robust against GNSS dropouts due to inertial sensor part of product
  • Multiple differential correction support including SBAS
  • RTK correction on RTCM format supported
  • Seastar®, OmniSTAR® and Marinestar™ corrections supported
  • All data are provided with a time stamp with an accuracy of 0.001 s to the actual measurement time
  • Outputs on RS-232, RS-422 and Ethernet
  • Up to 100 Hz data output rate
  • Precise Time Protocol (PTP) and NTP available for time critical applications over Ethernet
  • Multi-frequency GNSS ionospheric compensation
  • Logging of raw satellite and IMU data possible
  • Meets IHO exclusive order requirements

We offer comprehensive after-sales assistance

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