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Discovery

Resilient navigation

Protecting your position

Resilient navigation refers to the ability of navigation systems to maintain accurate and reliable positioning and navigation information even in the face of disruptions. These disruptions can include signal interference, jamming, spoofing, or environmental challenges such as harsh weather conditions.

We offer robust solutions that can adapt to various disruptions and maintain operational integrity to make sure operations are not halted. Our solutions incorporate multiple technologies, such as inertial navigation, anti-jamming and ant-spoofing techniques to provide continuous operation.

Illustration of a spoofing attempt by droneA spoofing/jamming attempt by drone. 

Multiple sources of positioning 

Layering up your resilience

To get assurance on your position you need multiple inputs to your navigation system. 

  • Inertial Motion Sensor unit
  • Doppler velocity log unit
  • Relative acoustic positioning

Dead reckoning

When navigating underwater the navigational aids get fewer. At times you may end up only reliying on your Inertial Motion Unit (IMU) for your position. For underwater navigation you need IMUs with a accuracy that is much higher than what you need above the surface.  A limitation of IMUs is that — if they don't have any input from other sensors — a small error in calculated position will accumulate exponentially. 

Dead reckoning challenges

The challenge when navigating only using the INS, is position drift. Measurements from the motion sensors contain small uncertainties which accumulate over time — leading you to believe you are positioned somewhere else than where you are in reality.

Inertial Navigation System

​Inertial navigation technology combines accelerometers and gyroscopes to measure and compute an object’s real-time location and trajectory, without relying on external references or satellite signals. 

  • HAIN Subsea 7000

    The HAIN Subsea 7000 with co-located DVL is a fully integrated inertial navigation system for subsea vehicles. The system can be aided from acoustic positioning systems, doppler velocity and pressure sensors.

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  • Range of products

    MGC

    The Motion Gyro Compass (MGC) is a maintenance-free and IMO type approved gyro compass that can be used as a stand-alone unit or as an IMU in other systems. High-end gyro compass technology, making it a reliable and accurate solution that meets all navigational requirements.

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  • Range of products

    MRU

    Our Motion Reference Units (MRU) are motion sensors ideal for any maritime operation requiring attitude determination and motion compensation, and deliver reliable real-time motion measurements with exceptional accuracy.

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Accoustic positioning

By using multiple transponders on the seabed or on the surface you can recive a position input to the Inertial navigation system, assuring that your position is accurate.  The system use two main principles for positioing: SSBL (Super Short Base Line) and LBL (Long Base Line)

What happens if your GNSS signals are interfered with or lost?

Designed for robust performance

Improving stability of the real-time positioning and increasing operational uptime in the event of a loss of some, or all, of the position reference sensors.

  • INS-C

    Inertial technology combined with the latest multi-antenna, multi-constellation GNSS technology and hydro-acoustic positioning, provides a reliable position reference solution with the highest tolerance for outages of position reference data.

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We offer comprehensive after-sales assistance

  • 24/7 Technical support

    Our Technical Support team is readily available to provide global 24/7 support and can respond to resolve any issues at any time, wherever you are located in the world.

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  • Training

    We can provide detailed training on the use of our products to ensure your crew is equipped with the necessary operational competence to minimise technical risk and maximise return on your asset investment.

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