Case Study: Nortek Signature VM

gnss compass on boat

Advanced Navigation’s plug and play GPS Compass has been selected by Nortek for their new survey package.

When Nortek started designing its new vessel-mounted ADCP package, Signature VM, it was looking for an accurate and cost-effective GPS compass based navigation system.

The Challenge:

A Vessel Mounted ADCP measures a velocity profile and the velocity direction below a sailing vessel.

To correct the measured values for the vessel speed and direction, ADCP measurements require accurate velocity and heading information. Besides the use of bottom track within the ADCP itself such information can be provided externally using a GNSS receiver and a non-magnetic heading source as a gyrocompass.

Until today the use of external correction sources has always been challenging to interface and require accurate timing as delays in heading and speed can significantly deteriorate the ADCP data.

The Solution:

Advanced Navigation’s GNSS Compass is an all in one GNSS/INS navigation and heading solution.

“The low-cost GNSS Compass is an easy, time and cost-effective instrument in comparison with old-style set-ups using serial gyro compasses and GPS instruments that need valuable installation time and a dedicated engineer to be set-up correctly” says Herman Huitema, VM Product Manager at Nortek.

The product provided accurate dual antenna GNSS based heading that is not subject to magnetic interference and can maintain accurate heading during GNSS outages of up to 20 minutes.

In addition, it features high accuracy RTK positioning and is plug and play with NMEA 0183, NMEA 2000 and Ethernet interfaces.

Find out more about GNSS Compass.

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