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Where high accuracy compass and heading information is required, a GPS compass offers many advantages over traditional fluxgate compass systems, at a significantly lower cost that commercial gyro compass units. The system utilises two GPS receivers built into a single antenna module to measure differential GPS position and calculate true heading. As the earth's magnetic field is not used as a reference true heading is measured without the need to compensate for magnetic deviation or variation. This is very useful when a vessel is working in areas where magnetic variation my fluctuate significantly and it takes away the need for costly and time consuming compass swings. Our GPS compass units also provide very accurate position and rate of turn information.
A magnetometer is a device used to measure the intensity and direction of a magnetic field. Floating core magnetometers are primarily used for measuring the horizontal component of the earth's magnetic field to make compasses. Fixed core magnetometers are more commonly used to measure angles of wind or to assist in directional drilling calculations in the oil and gas industry
The ComNav G2 GNSS Satellite Compass with Navigator G2 Display provides true heading, GPS position data, gyro data and speed log in a single display. The system uses differential GPS to measure heading and therefore is not subject to magnetic variation or deviation. Heading data is transmitted to an autopilot via a standard NMEA0183 data output.
The ComNav G2 and G2B GNSS Satellite Compass provides true heading measurement with an accuracy of 0.25° RMS. The system uses differential GPS to measure heading and therefore is not subject to magnetic variation or deviation. Heading data is transmitted to an indicator or autopilot via a standard NMEA0183 or NMEA2000 data output. The system is IMO compliant and Wheelmark and USCG approved, and may be used as a primary heading source.
The ComNav G1 GNSS Satellite Compass provides true heading measurement with an accuracy of 0.5° RMS. The system uses differential GPS to measure heading and therefore is not subject to magnetic variation or deviation. Heading data is transmitted to an indicator or autopilot via a standard NMEA0183 or NMEA2000 data output.