Simrad launched the new HS75™ GNSS Compass

Simrad launched the new HS75™ GNSS Compass replacing the now discontinued HS70. The HS75 supports all current global GNSS constellations, GPS, Galileo, GLONASS, BeiDou, and QZSS1. The integrated GNSS antennas are separated by 20 cm between phase centers, resulting in a heading performance of better than 0.75° RMS. The HS75 can provide heading and positioning updates at 10 Hz and delivers positioning accuracy of 0.6 m 95% of the time when using differential GPS corrections from Satellite Based Augmentation Systems (SBAS). It’s built-in a small form factor antenna which houses the following:

  • Dual GNSS, multipath-resistant antennas
  • Six-axis rate sensor (gyro)
  • GNSS receivers and processors
  • Standard NMEA 2000 Micro-C port for power and data

The 422-channel receivers provide high accuracy and data update while the 6-axis rate sensor improves system performance further and provides backup heading information in the event a GNSS heading is not available due to signal blockage. The sensor provides a substitute heading, accurate to within 1°/min for up to 3 minutes.

Accurate Heading

An accurate heading sensor is essential for autopilot, advanced radar features, and many other on-board electronics. The multi-GNSS HS75 supports GPS, GLONASS, BeiDou, Galileo, and QZSS for pinpoint global positioning and heading accuracy. The commercial-grade HS75 offers heading accuracy to within 0.75 degrees: much greater than a common magnetic rate compass, without the cost and maintenance of a gyrocompass.

Unlike a standard GPS receiver, which can only estimate heading based on the movement of a vessel, the HS75 provides an accurate heading even while stationary. Integrated gyro and tilt sensors offer enhanced performance, and provide a temporary source of heading data during any loss of GPS signal.

Fast and Accurate Positioning

The HS75’s high-speed GPS receiver calculates position up to 20 times every second, perfect for fast-moving vessels and equipment that relies on high-speed position updates. Quick startup means you won’t get caught waiting for a position fix before you can get underway. Support for satellite-based augmentation systems (SBAS) offers enhanced positional accuracy where available.

Rate of Turn, Heave, Pitch, and Roll

The HS75 also calculates a vessel’s rate of turn, heave, pitch, and roll. Rate of turn is essential for optimal autopilot performance, while heave data is used by some hydroacoustic equipment (sonars, echo sounders, etc) to compensate for the effects of wave action in bottom detection algorithms and stabilize their echogram. This additional data is output to compatible equipment over the vessel’s NMEA 2000® network.

Simple Installation

The HS75 offers plug-and-play installation, small form factor, and high performance. The compass – measuring only 35 cm in length – mounts easily to a flat surface or pole.

For further information you may contact the Official Distributor and Support Center for Greece:

Aegean Electronics SA

4 Zosimadon Str, Piraeus 185 31, Greece

Tel: +30 210 4123000