Wavex® is a virtual sensor designed for wave and current measurements using data from standard marine X-band radars. The sensor is operative at all ship speeds as well as from fixed locations. Additionally, Speed Through Water by Wavex accurately provides a vessel’s STW without the use of any submerged equipment.

For more than 35 years, Miros has provided accurate, reliable ocean-monitoring systems to the maritime industry. Our expertise lies in measuring local environmental conditions and making the data accessible in real time, on- or offshore.

Wavex is a dry sensor that leverages X-band navigation radar technology for surface current measurements. The sensor delivers highly accurate real-time data undisturbed by air bubbles, turbulence, or other interferences caused by vessel motion. Wavex eliminates the time and cost issues associated with installing and maintaining underwater equipment and can interface with an existing marine X-band radar without calibration.

Miros Wavex Applications & Benefits

Wavex provides accurate and reliable wave parameters, including 2D-spectrum, surface current magnitude and direction, as well as speed through water calculations – all these output parameters are key to:

Speed optimisation to save fuel

Enhanced hull and propeller performance management

Reduced cost and risk due to weather claims

Reduced weather-related vessel and cargo damage

Improved passenger comfort

IoT-enabled sensor

Miros’ Wavex technology gives you accurate, real-time measurements of ocean surface currents, unaffected by vessel motion and propellers while eliminating the cost of traditional underwater sensors, associated maintenance, and underwater operations.

How Does It Work?

The Wavex system measures sea state from digitised sea clutter images provided by a marine X-band radar. The radar backscatter from the sea surface is modulated by gravity waves, giving wave-like patterns in the images. The modulation is related to three mechanisms:

  • Tilt modulation
  • Hydrodynamic modulation
  • Shadowing

Grazing angles in the range of 1 to 10 degrees are recommended to achieve an appropriate radar image contrast Cartesian sections are extracted from the radar images for further processing and data from the Cartesian sections are combined into one directional wave spectrum. A minimum wind speed of 1 – 2 m/s must be present for Wavex to record wave a and current data. Recommended radar antenna mounting height is 15 – 100 meters above the sea.

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