Operator's Guide

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System Overview
The Artemis microwave-based position reference system provides accurate positional data
to marine Dynamic Positioning (DP) control systems. It enables automated approach and
station keeping relative to another Artemis sensor on a rig or platform, or to another vessel.
The standard Artemis system includes:
• Two identical Antenna Units (or Sensors) configured, as a Mobile Station and a Fixed
Station.
• The Artemis Control PC, a Windows-based marine specification computer, running the
control software.
An alternative configuration - the Beacon system - involves the same components as
the standard system except for a non-rotating Beacon Unit instead of a Fixed Station. A
Beacon Unit does not provide an Azimuth measurement.
Antenna Units
The Mobile Station is mounted on the DP-Equipped vessel, ideally at the top of the main
mast. The Fixed Station is installed on a fixed platform if absolute positioning is needed or
on a moving platform or structure to provide relative positioning.
System Operation
In order to provide positional data to the vessel’s DP system, the Artemis system needs to
be “locked”. In this state, the antennae of the Fixed and Mobile Stations are facing each
other and automatically tracking by maintaining a continuous microwave link.
The distance between the sensors is obtained from the travel time of the microwave signal.
The bearing of the Fixed Station, with respect to the centre line of the vessel is measured.
The Fixed Station measures the Azimuth and reports it to the Mobile Station.
Introduction and System Overview
Artemis Validator
The Artemis Validator is a portable, battery powered Fixed Station simulator that can test an
Artemis Mk5 or Mk6 sensor at distances of up to 300m.
The Artemis Validator can simulate different ranges at frequency pair and address code
combinations to support validation of the operaton of a Mobile Artemis sensor.
Layout of a Standard Artemis System
Introduction
Welcome to the Artemis Validator Operator’s Guide. It explains how to use the portable
version of the Artemis Validator to confirm that an Artemis Mk5 or Mk6 position reference
sensor is in working order.
The System Overview sets the Artemis Validator in the context of the Artemis system as a
whole.
Note that whilst we endeavour to describe the functionality of the device correctly in this
document, we do not guarantee that it exactly represents the version of the device that you
are using.