Inertial Navigation & Positioning Technology for Unmanned, Autonomous Systems
Ramses Intelligent LBL transceiver for ROV & AUV navigation

Intelligent LBL transceiver for ROV & AUV navigation

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Ramses is an acoustic synthetic baseline (ASBL) positioning system, enabling simple LBL and sparse-LBL subsea navigation for ROVs and AUVs. The transceiver can be tightly coupled with iXblue INS to provide extreme precision while requiring a greatly reduced number of transponders.


  • Modes of operation: Sparse LBL positioning, with SLAM capability, and LBL
  • Compatibility with iXblue INS and Canopus supervision software
  • Embedded Kalman filter and LBL algorithms
  • Full embedded processing, no top-side required
  • Millimetre range measurement precision
  • Embedded SV, Pressure and Temperature sensors
  • Subsea switch & logger functionalities
  • Acoustic communication (500 bits/s)


  • Simplified mobilization for ROVs and AUVs
  • LBL navigation accuracy with superior precision
  • Reduced number of required transponders
  • Flexible array deployment thanks to SLAM
  • Fully operable in existing fields, reducing seabed transponder maintenance and vessel time