User's Guide

 3 2
Loosen the nut to swivel the
bracket in the required direcon.
!
Tighten the nut with a spanner
to x the bracket’s posion.
Mounting
The mini-target can be used with or without a swivel bracket, as long as
it is mounted with its longest side vercal, and its carrying-handle at the
top.
To Mount the Target:
1. Hook the foot of the target underneath the knob on the boom of
the mounng plate. (See right).
2. Rotate the target backwards unl it is held in place by its magnets
against the mounng plate.
Knob
Mounng
Plate
Magnet
Swivel Bracket
Mounting on Horizontal Bar Mounting on Vertical Bar
Swivel Bracket
Swivel Bracket
The swivel bracket (Part № 21-0275-1) should be used to point
the target towards the RadaScan vessels’ working area.
It can be mounted on either a horizontal or vercal bar:
Positioning
The locaon, range and orientaon of the targets in relaon to the sensor have a signicant eect on the tracking
performance of the RadaScan / Mini-RadaScan systems, and hence on the quality of the posion data sent to the DP system.
RadaScan is a radar-based system. Metallic structures reect the microwave beam transmied by the sensor,
and can cause mulpath interference, where ghost images are reported by the system. However, this unwanted
phenomenon can be prevented by carefully posioning the targets according to the following guidelines:
Targets Should be Mounted:

With a clear, unobstructed view towards the RadaScan-equipped vessel.

At a height no lower than two metres below the vessel-mounted Sensor.

At a height no higher than ve metres above the vessel-mounted Sensor.

On outside corners of the rig or plaorm to minimise the amount of metallic structure around them.
Good Location

Good angle of incidence.

Lower angle of elevaon allows vessel
to pick up target on approach.

Longer range aids performance
in high sea states.

Usually clear of obstrucons
and away from enclosed corners.

Provides adequate cover
during vessel manœuvres.
Rig/Plaorm
RadaScan Vessel
Good Target
Locaons

Poor Location

Good angle of incidence.

Steep angle of elevaon prevents vessel from
picking up target on approach.

Shorter range inhibits performance
in high sea states.

Oen surrounded by obstrucons
and radar-reecng metalwork.

Does not provide adequate cover
during all vessel manœuvres.
Rig/Plaorm
RadaScan Vessel
Poor Target
Locaon

Targets Should NOT be Mounted:

On inside corners.

Below an overhang.

On lower service decks below a main-deck overhang.