The MGC R4 COMPASS system is IMO type approved as a

gyro compass for navigation purposes for use together 

with a heading and bearing repeater. Very high reliability

is achieved by using Ring Laser Gyros with no rotational

or mechanical wear-out parts.

Function

The MGC is a strap-down based gyro compass

including three Ring Laser Gyros (RLG) and three linear

accelerometers. The system can operate in Attitude and

Heading Reference System (AHRS) mode and Inertial

Navigation mode. In the AHRS mode input of speed

and latitude data (VBW/VTG and GGA/GLL) is required.

External time input is also required (ZDA). In this mode

the system will output heading, roll, pitch and heave. In

the Inertial Navigation mode input of latitude, longitude,

height and time (GGA and ZDA) and PPS from a GNSS

receiver is required. In this mode the product will output

heading, roll, pitch, heave and position.

The system is delivered with configuration software.

In this software the user selects output formats on the

different communication lines in addition to other

configuration purposes.